8a4b0f858a
we need to reset the body mag variances if we change sensors or if we are starting 3D fusion. When not doing 3D fusion we zero the variances, so they must be initialised again when we restart fusion. This fixes a bug in handling the variances on a 2nd flight
1922 lines
116 KiB
C++
1922 lines
116 KiB
C++
#include <AP_HAL/AP_HAL.h>
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#include "AP_NavEKF3.h"
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#include "AP_NavEKF3_core.h"
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#include <AP_AHRS/AP_AHRS.h>
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#include <GCS_MAVLink/GCS.h>
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#include <AP_GPS/AP_GPS.h>
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#include <AP_VisualOdom/AP_VisualOdom.h>
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extern const AP_HAL::HAL& hal;
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// constructor
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NavEKF3_core::NavEKF3_core(NavEKF3 *_frontend) :
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_perf_UpdateFilter(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_UpdateFilter")),
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_perf_CovariancePrediction(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_CovariancePrediction")),
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_perf_FuseVelPosNED(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseVelPosNED")),
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_perf_FuseMagnetometer(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseMagnetometer")),
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_perf_FuseAirspeed(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseAirspeed")),
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_perf_FuseSideslip(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseSideslip")),
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_perf_TerrainOffset(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_TerrainOffset")),
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_perf_FuseOptFlow(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseOptFlow")),
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_perf_FuseBodyOdom(hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_FuseBodyOdom")),
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frontend(_frontend)
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{
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_perf_test[0] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test0");
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_perf_test[1] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test1");
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_perf_test[2] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test2");
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_perf_test[3] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test3");
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_perf_test[4] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test4");
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_perf_test[5] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test5");
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_perf_test[6] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test6");
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_perf_test[7] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test7");
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_perf_test[8] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test8");
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_perf_test[9] = hal.util->perf_alloc(AP_HAL::Util::PC_ELAPSED, "EK3_Test9");
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firstInitTime_ms = 0;
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lastInitFailReport_ms = 0;
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}
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// setup this core backend
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bool NavEKF3_core::setup_core(uint8_t _imu_index, uint8_t _core_index)
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{
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imu_index = _imu_index;
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gyro_index_active = imu_index;
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accel_index_active = imu_index;
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core_index = _core_index;
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_ahrs = frontend->_ahrs;
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/*
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The imu_buffer_length needs to cope with the worst case sensor delay at the
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target EKF state prediction rate. Non-IMU data coming in faster is downsampled.
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*/
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// Calculate the expected EKF time step
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if (AP::ins().get_loop_rate_hz() > 0) {
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dtEkfAvg = 1.0f / AP::ins().get_loop_rate_hz();
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dtEkfAvg = MAX(dtEkfAvg,EKF_TARGET_DT);
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} else {
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return false;
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}
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// find the maximum time delay for all potential sensors
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uint16_t maxTimeDelay_ms = MAX(frontend->_hgtDelay_ms ,
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MAX(frontend->_flowDelay_ms ,
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MAX(frontend->_rngBcnDelay_ms ,
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MAX(frontend->magDelay_ms ,
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(uint16_t)(EKF_TARGET_DT_MS)
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))));
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// GPS sensing can have large delays and should not be included if disabled
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if (frontend->_fusionModeGPS != 3) {
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// Wait for the configuration of all GPS units to be confirmed. Until this has occurred the GPS driver cannot provide a correct time delay
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float gps_delay_sec = 0;
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if (!AP::gps().get_lag(selected_gps, gps_delay_sec)) {
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if (AP_HAL::millis() - lastInitFailReport_ms > 10000) {
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lastInitFailReport_ms = AP_HAL::millis();
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// provide an escalating series of messages
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if (AP_HAL::millis() > 30000) {
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gcs().send_text(MAV_SEVERITY_ERROR, "EKF3 waiting for GPS config data");
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} else if (AP_HAL::millis() > 15000) {
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gcs().send_text(MAV_SEVERITY_WARNING, "EKF3 waiting for GPS config data");
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} else {
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gcs().send_text(MAV_SEVERITY_INFO, "EKF3 waiting for GPS config data");
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}
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}
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return false;
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}
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// limit the time delay value from the GPS library to a max of 250 msec which is the max value the EKF has been tested for.
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maxTimeDelay_ms = MAX(maxTimeDelay_ms , MIN((uint16_t)(gps_delay_sec * 1000.0f),250));
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}
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// airspeed sensing can have large delays and should not be included if disabled
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if (_ahrs->airspeed_sensor_enabled()) {
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maxTimeDelay_ms = MAX(maxTimeDelay_ms , frontend->tasDelay_ms);
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}
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#if HAL_VISUALODOM_ENABLED
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// include delay from visual odometry if enabled
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AP_VisualOdom *visual_odom = AP::visualodom();
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if ((visual_odom != nullptr) && visual_odom->enabled()) {
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maxTimeDelay_ms = MAX(maxTimeDelay_ms, MIN(visual_odom->get_delay_ms(), 250));
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}
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#endif
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// calculate the IMU buffer length required to accommodate the maximum delay with some allowance for jitter
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imu_buffer_length = (maxTimeDelay_ms / (uint16_t)(EKF_TARGET_DT_MS)) + 1;
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// set the observation buffer length to handle the minimum time of arrival between observations in combination
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// with the worst case delay from current time to ekf fusion time
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// allow for worst case 50% extension of the ekf fusion time horizon delay due to timing jitter
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uint16_t ekf_delay_ms = maxTimeDelay_ms + (int)(ceilf((float)maxTimeDelay_ms * 0.5f));
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obs_buffer_length = (ekf_delay_ms / frontend->sensorIntervalMin_ms) + 1;
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// limit to be no longer than the IMU buffer (we can't process data faster than the EKF prediction rate)
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obs_buffer_length = MIN(obs_buffer_length,imu_buffer_length);
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// calculate buffer size for optical flow data
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const uint8_t flow_buffer_length = MIN((ekf_delay_ms / frontend->flowIntervalMin_ms) + 1, imu_buffer_length);
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// calculate buffer size for external nav data
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const uint8_t extnav_buffer_length = MIN((ekf_delay_ms / frontend->extNavIntervalMin_ms) + 1, imu_buffer_length);
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// buffer size for external yaw
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const uint8_t yaw_angle_buffer_length = MAX(obs_buffer_length, extnav_buffer_length);
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if(!storedGPS.init(obs_buffer_length)) {
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return false;
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}
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if(!storedMag.init(obs_buffer_length)) {
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return false;
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}
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if(!storedBaro.init(obs_buffer_length)) {
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return false;
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}
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if(!storedTAS.init(obs_buffer_length)) {
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return false;
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}
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if (!storedOF.init(flow_buffer_length)) {
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return false;
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}
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if(!storedBodyOdm.init(obs_buffer_length)) {
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return false;
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}
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if(!storedWheelOdm.init(imu_buffer_length)) { // initialise to same length of IMU to allow for multiple wheel sensors
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return false;
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}
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if(!storedYawAng.init(yaw_angle_buffer_length)) {
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return false;
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}
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// Note: the use of dual range finders potentially doubles the amount of data to be stored
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if(!storedRange.init(MIN(2*obs_buffer_length , imu_buffer_length))) {
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return false;
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}
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// Note: range beacon data is read one beacon at a time and can arrive at a high rate
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if(!storedRangeBeacon.init(imu_buffer_length+1)) {
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return false;
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}
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if (!storedExtNav.init(extnav_buffer_length)) {
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return false;
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}
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if (!storedExtNavVel.init(extnav_buffer_length)) {
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return false;
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}
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if(!storedIMU.init(imu_buffer_length)) {
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return false;
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}
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if(!storedOutput.init(imu_buffer_length)) {
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return false;
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}
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gcs().send_text(MAV_SEVERITY_INFO, "EKF3 IMU%u buffs IMU=%u OBS=%u OF=%u EN:%u, dt=%.4f",
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(unsigned)imu_index,
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(unsigned)imu_buffer_length,
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(unsigned)obs_buffer_length,
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(unsigned)flow_buffer_length,
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(unsigned)extnav_buffer_length,
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(double)dtEkfAvg);
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if ((yawEstimator == nullptr) && (frontend->_gsfRunMask & (1U<<core_index))) {
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// check if there is enough memory to create the EKF-GSF object
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if (hal.util->available_memory() < sizeof(EKFGSF_yaw) + 1024) {
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gcs().send_text(MAV_SEVERITY_CRITICAL, "EKF3 IMU%u GSF: not enough memory",(unsigned)imu_index);
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return false;
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}
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// try to instantiate
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yawEstimator = new EKFGSF_yaw();
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if (yawEstimator == nullptr) {
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gcs().send_text(MAV_SEVERITY_CRITICAL, "EKF3 IMU%uGSF: allocation failed",(unsigned)imu_index);
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return false;
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}
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}
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return true;
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}
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/********************************************************
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* INIT FUNCTIONS *
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********************************************************/
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// Use a function call rather than a constructor to initialise variables because it enables the filter to be re-started in flight if necessary.
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void NavEKF3_core::InitialiseVariables()
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{
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// calculate the nominal filter update rate
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const AP_InertialSensor &ins = AP::ins();
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localFilterTimeStep_ms = (uint8_t)(1000*ins.get_loop_delta_t());
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localFilterTimeStep_ms = MAX(localFilterTimeStep_ms, (uint8_t)EKF_TARGET_DT_MS);
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// initialise time stamps
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imuSampleTime_ms = frontend->imuSampleTime_us / 1000;
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prevTasStep_ms = imuSampleTime_ms;
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prevBetaStep_ms = imuSampleTime_ms;
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lastBaroReceived_ms = imuSampleTime_ms;
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lastVelPassTime_ms = 0;
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lastPosPassTime_ms = 0;
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lastHgtPassTime_ms = 0;
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lastTasPassTime_ms = 0;
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lastSynthYawTime_ms = 0;
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lastTimeGpsReceived_ms = 0;
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secondLastGpsTime_ms = 0;
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lastDecayTime_ms = imuSampleTime_ms;
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timeAtLastAuxEKF_ms = imuSampleTime_ms;
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flowValidMeaTime_ms = imuSampleTime_ms;
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rngValidMeaTime_ms = imuSampleTime_ms;
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flowMeaTime_ms = 0;
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prevFlowFuseTime_ms = 0;
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gndHgtValidTime_ms = 0;
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ekfStartTime_ms = imuSampleTime_ms;
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lastGpsVelFail_ms = 0;
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lastGpsAidBadTime_ms = 0;
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timeTasReceived_ms = 0;
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lastPreAlignGpsCheckTime_ms = imuSampleTime_ms;
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lastPosReset_ms = 0;
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lastVelReset_ms = 0;
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lastPosResetD_ms = 0;
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lastRngMeasTime_ms = 0;
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// initialise other variables
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gpsNoiseScaler = 1.0f;
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hgtTimeout = true;
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tasTimeout = true;
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badIMUdata = false;
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finalInflightYawInit = false;
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dtIMUavg = ins.get_loop_delta_t();
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dtEkfAvg = EKF_TARGET_DT;
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dt = 0;
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velDotNEDfilt.zero();
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lastKnownPositionNE.zero();
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prevTnb.zero();
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memset(&P[0][0], 0, sizeof(P));
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memset(&KH[0][0], 0, sizeof(KH));
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memset(&KHP[0][0], 0, sizeof(KHP));
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memset(&nextP[0][0], 0, sizeof(nextP));
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flowDataValid = false;
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rangeDataToFuse = false;
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Popt = 0.0f;
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terrainState = 0.0f;
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prevPosN = stateStruct.position.x;
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prevPosE = stateStruct.position.y;
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inhibitGndState = false;
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flowGyroBias.x = 0;
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flowGyroBias.y = 0;
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heldVelNE.zero();
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PV_AidingMode = AID_NONE;
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PV_AidingModePrev = AID_NONE;
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posTimeout = true;
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velTimeout = true;
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memset(&faultStatus, 0, sizeof(faultStatus));
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hgtRate = 0.0f;
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onGround = true;
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prevOnGround = true;
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inFlight = false;
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prevInFlight = false;
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manoeuvring = false;
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inhibitWindStates = true;
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inhibitDelVelBiasStates = true;
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inhibitDelAngBiasStates = true;
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gndOffsetValid = false;
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validOrigin = false;
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takeoffExpectedSet_ms = 0;
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expectTakeoff = false;
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touchdownExpectedSet_ms = 0;
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expectGndEffectTakeoff = false;
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expectGndEffectTouchdown = false;
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gpsSpdAccuracy = 0.0f;
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gpsPosAccuracy = 0.0f;
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gpsHgtAccuracy = 0.0f;
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baroHgtOffset = 0.0f;
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yawResetAngle = 0.0f;
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lastYawReset_ms = 0;
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tiltAlignComplete = false;
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yawAlignComplete = false;
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have_table_earth_field = false;
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stateIndexLim = 23;
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baroStoreIndex = 0;
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rangeStoreIndex = 0;
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last_gps_idx = 0;
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tasStoreIndex = 0;
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ofStoreIndex = 0;
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delAngCorrection.zero();
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velErrintegral.zero();
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posErrintegral.zero();
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gpsGoodToAlign = false;
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gpsNotAvailable = true;
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motorsArmed = false;
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prevMotorsArmed = false;
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innovationIncrement = 0;
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lastInnovation = 0;
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memset(&gpsCheckStatus, 0, sizeof(gpsCheckStatus));
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gpsSpdAccPass = false;
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ekfInnovationsPass = false;
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sAccFilterState1 = 0.0f;
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sAccFilterState2 = 0.0f;
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lastGpsCheckTime_ms = 0;
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lastInnovPassTime_ms = 0;
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lastInnovFailTime_ms = 0;
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gpsAccuracyGood = false;
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gpsloc_prev = {};
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gpsDriftNE = 0.0f;
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gpsVertVelFilt = 0.0f;
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gpsHorizVelFilt = 0.0f;
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memset(&statesArray, 0, sizeof(statesArray));
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memset(&vertCompFiltState, 0, sizeof(vertCompFiltState));
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posVelFusionDelayed = false;
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optFlowFusionDelayed = false;
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flowFusionActive = false;
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airSpdFusionDelayed = false;
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sideSlipFusionDelayed = false;
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posResetNE.zero();
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velResetNE.zero();
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posResetD = 0.0f;
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hgtInnovFiltState = 0.0f;
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imuDataDownSampledNew.delAng.zero();
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imuDataDownSampledNew.delVel.zero();
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imuDataDownSampledNew.delAngDT = 0.0f;
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imuDataDownSampledNew.delVelDT = 0.0f;
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imuDataDownSampledNew.gyro_index = gyro_index_active;
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imuDataDownSampledNew.accel_index = accel_index_active;
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runUpdates = false;
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framesSincePredict = 0;
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gpsYawResetRequest = false;
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delAngBiasLearned = false;
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memset(&filterStatus, 0, sizeof(filterStatus));
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gpsInhibit = false;
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activeHgtSource = 0;
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memset(&rngMeasIndex, 0, sizeof(rngMeasIndex));
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memset(&storedRngMeasTime_ms, 0, sizeof(storedRngMeasTime_ms));
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memset(&storedRngMeas, 0, sizeof(storedRngMeas));
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terrainHgtStable = true;
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ekfOriginHgtVar = 0.0f;
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ekfGpsRefHgt = 0.0;
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velOffsetNED.zero();
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posOffsetNED.zero();
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memset(&velPosObs, 0, sizeof(velPosObs));
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// range beacon fusion variables
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memset((void *)&rngBcnDataDelayed, 0, sizeof(rngBcnDataDelayed));
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rngBcnStoreIndex = 0;
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lastRngBcnPassTime_ms = 0;
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rngBcnTestRatio = 0.0f;
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rngBcnHealth = false;
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rngBcnTimeout = true;
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varInnovRngBcn = 0.0f;
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innovRngBcn = 0.0f;
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memset(&lastTimeRngBcn_ms, 0, sizeof(lastTimeRngBcn_ms));
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rngBcnDataToFuse = false;
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beaconVehiclePosNED.zero();
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beaconVehiclePosErr = 1.0f;
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rngBcnLast3DmeasTime_ms = 0;
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rngBcnGoodToAlign = false;
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lastRngBcnChecked = 0;
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receiverPos.zero();
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memset(&receiverPosCov, 0, sizeof(receiverPosCov));
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rngBcnAlignmentStarted = false;
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rngBcnAlignmentCompleted = false;
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lastBeaconIndex = 0;
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rngBcnPosSum.zero();
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numBcnMeas = 0;
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rngSum = 0.0f;
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N_beacons = 0;
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maxBcnPosD = 0.0f;
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minBcnPosD = 0.0f;
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bcnPosDownOffsetMax = 0.0f;
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bcnPosOffsetMaxVar = 0.0f;
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maxOffsetStateChangeFilt = 0.0f;
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bcnPosDownOffsetMin = 0.0f;
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bcnPosOffsetMinVar = 0.0f;
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minOffsetStateChangeFilt = 0.0f;
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rngBcnFuseDataReportIndex = 0;
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memset(&rngBcnFusionReport, 0, sizeof(rngBcnFusionReport));
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bcnPosOffsetNED.zero();
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bcnOriginEstInit = false;
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// body frame displacement fusion
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memset((void *)&bodyOdmDataNew, 0, sizeof(bodyOdmDataNew));
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memset((void *)&bodyOdmDataDelayed, 0, sizeof(bodyOdmDataDelayed));
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lastbodyVelPassTime_ms = 0;
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memset(&bodyVelTestRatio, 0, sizeof(bodyVelTestRatio));
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memset(&varInnovBodyVel, 0, sizeof(varInnovBodyVel));
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memset(&innovBodyVel, 0, sizeof(innovBodyVel));
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prevBodyVelFuseTime_ms = 0;
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bodyOdmMeasTime_ms = 0;
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bodyVelFusionDelayed = false;
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bodyVelFusionActive = false;
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// yaw sensor fusion
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yawMeasTime_ms = 0;
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memset(&yawAngDataNew, 0, sizeof(yawAngDataNew));
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memset(&yawAngDataDelayed, 0, sizeof(yawAngDataDelayed));
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|
|
// external nav data fusion
|
|
extNavDataDelayed = {};
|
|
extNavMeasTime_ms = 0;
|
|
extNavLastPosResetTime_ms = 0;
|
|
extNavDataToFuse = false;
|
|
extNavUsedForPos = false;
|
|
extNavVelDelayed = {};
|
|
extNavVelToFuse = false;
|
|
useExtNavVel = false;
|
|
extNavVelMeasTime_ms = 0;
|
|
|
|
// zero data buffers
|
|
storedIMU.reset();
|
|
storedGPS.reset();
|
|
storedBaro.reset();
|
|
storedTAS.reset();
|
|
storedRange.reset();
|
|
storedOutput.reset();
|
|
storedRangeBeacon.reset();
|
|
storedBodyOdm.reset();
|
|
storedWheelOdm.reset();
|
|
storedExtNav.reset();
|
|
storedExtNavVel.reset();
|
|
|
|
// initialise pre-arm message
|
|
hal.util->snprintf(prearm_fail_string, sizeof(prearm_fail_string), "EKF3 still initialising");
|
|
|
|
InitialiseVariablesMag();
|
|
|
|
// emergency reset of yaw to EKFGSF estimate
|
|
EKFGSF_yaw_reset_ms = 0;
|
|
EKFGSF_yaw_reset_request_ms = 0;
|
|
EKFGSF_yaw_reset_count = 0;
|
|
EKFGSF_run_filterbank = false;
|
|
EKFGSF_yaw_valid_count = 0;
|
|
|
|
effectiveMagCal = effective_magCal();
|
|
}
|
|
|
|
|
|
// Use a function call rather than a constructor to initialise variables because it enables the filter to be re-started in flight if necessary.
|
|
void NavEKF3_core::InitialiseVariablesMag()
|
|
{
|
|
lastHealthyMagTime_ms = imuSampleTime_ms;
|
|
lastMagUpdate_us = 0;
|
|
magYawResetTimer_ms = imuSampleTime_ms;
|
|
magTimeout = false;
|
|
allMagSensorsFailed = false;
|
|
badMagYaw = false;
|
|
finalInflightMagInit = false;
|
|
mag_state.q0 = 1;
|
|
mag_state.DCM.identity();
|
|
inhibitMagStates = true;
|
|
magStoreIndex = 0;
|
|
magSelectIndex = 0;
|
|
lastMagOffsetsValid = false;
|
|
magStateResetRequest = false;
|
|
magStateInitComplete = false;
|
|
magYawResetRequest = false;
|
|
posDownAtLastMagReset = stateStruct.position.z;
|
|
yawInnovAtLastMagReset = 0.0f;
|
|
quatAtLastMagReset = stateStruct.quat;
|
|
magFieldLearned = false;
|
|
storedMag.reset();
|
|
storedYawAng.reset();
|
|
}
|
|
|
|
/*
|
|
Initialise the states from accelerometer data. This assumes measured acceleration
|
|
is dominated by gravity. If this assumption is not true then the EKF will require
|
|
timee to reduce the resulting tilt error. Yaw alignment is not performed by this
|
|
function, but is perfomred later and initiated the SelectMagFusion() function
|
|
after the tilt has stabilised.
|
|
*/
|
|
bool NavEKF3_core::InitialiseFilterBootstrap(void)
|
|
{
|
|
// update sensor selection (for affinity)
|
|
update_sensor_selection();
|
|
|
|
// If we are a plane and don't have GPS lock then don't initialise
|
|
if (assume_zero_sideslip() && AP::gps().status(preferred_gps) < AP_GPS::GPS_OK_FIX_3D) {
|
|
hal.util->snprintf(prearm_fail_string,
|
|
sizeof(prearm_fail_string),
|
|
"EKF3 init failure: No GPS lock");
|
|
statesInitialised = false;
|
|
return false;
|
|
}
|
|
|
|
// read all the sensors required to start the EKF the states
|
|
readIMUData();
|
|
readMagData();
|
|
readGpsData();
|
|
readBaroData();
|
|
|
|
if (statesInitialised) {
|
|
// we are initialised, but we don't return true until the IMU
|
|
// buffer has been filled. This prevents a timing
|
|
// vulnerability with a pause in IMU data during filter startup
|
|
return storedIMU.is_filled();
|
|
}
|
|
|
|
// accumulate enough sensor data to fill the buffers
|
|
if (firstInitTime_ms == 0) {
|
|
firstInitTime_ms = imuSampleTime_ms;
|
|
return false;
|
|
} else if (imuSampleTime_ms - firstInitTime_ms < 1000) {
|
|
return false;
|
|
}
|
|
|
|
// set re-used variables to zero
|
|
InitialiseVariables();
|
|
|
|
// acceleration vector in XYZ body axes measured by the IMU (m/s^2)
|
|
Vector3f initAccVec;
|
|
|
|
// TODO we should average accel readings over several cycles
|
|
initAccVec = AP::ins().get_accel(accel_index_active);
|
|
|
|
// normalise the acceleration vector
|
|
float pitch=0, roll=0;
|
|
if (initAccVec.length() > 0.001f) {
|
|
initAccVec.normalize();
|
|
|
|
// calculate initial pitch angle
|
|
pitch = asinf(initAccVec.x);
|
|
|
|
// calculate initial roll angle
|
|
roll = atan2f(-initAccVec.y , -initAccVec.z);
|
|
}
|
|
|
|
// calculate initial roll and pitch orientation
|
|
stateStruct.quat.from_euler(roll, pitch, 0.0f);
|
|
|
|
// initialise dynamic states
|
|
stateStruct.velocity.zero();
|
|
stateStruct.position.zero();
|
|
|
|
// initialise static process model states
|
|
stateStruct.gyro_bias.zero();
|
|
stateStruct.accel_bias.zero();
|
|
stateStruct.wind_vel.zero();
|
|
stateStruct.earth_magfield.zero();
|
|
stateStruct.body_magfield.zero();
|
|
|
|
// set the position, velocity and height
|
|
ResetVelocity(resetDataSource::DEFAULT);
|
|
ResetPosition(resetDataSource::DEFAULT);
|
|
ResetHeight();
|
|
|
|
// define Earth rotation vector in the NED navigation frame
|
|
calcEarthRateNED(earthRateNED, _ahrs->get_home().lat);
|
|
|
|
// initialise the covariance matrix
|
|
CovarianceInit();
|
|
|
|
// reset the output predictor states
|
|
StoreOutputReset();
|
|
|
|
// set to true now that states have be initialised
|
|
statesInitialised = true;
|
|
|
|
// reset inactive biases
|
|
for (uint8_t i=0; i<INS_MAX_INSTANCES; i++) {
|
|
inactiveBias[i].gyro_bias.zero();
|
|
inactiveBias[i].accel_bias.zero();
|
|
}
|
|
|
|
gcs().send_text(MAV_SEVERITY_INFO, "EKF3 IMU%u initialised",(unsigned)imu_index);
|
|
|
|
// we initially return false to wait for the IMU buffer to fill
|
|
return false;
|
|
}
|
|
|
|
// initialise the covariance matrix
|
|
void NavEKF3_core::CovarianceInit()
|
|
{
|
|
// zero the matrix
|
|
memset(&P[0][0], 0, sizeof(P));
|
|
|
|
// define the initial angle uncertainty as variances for a rotation vector
|
|
Vector3f rot_vec_var;
|
|
rot_vec_var.x = rot_vec_var.y = rot_vec_var.z = sq(0.1f);
|
|
|
|
// update the quaternion state covariances
|
|
initialiseQuatCovariances(rot_vec_var);
|
|
|
|
// velocities
|
|
P[4][4] = sq(frontend->_gpsHorizVelNoise);
|
|
P[5][5] = P[4][4];
|
|
P[6][6] = sq(frontend->_gpsVertVelNoise);
|
|
// positions
|
|
P[7][7] = sq(frontend->_gpsHorizPosNoise);
|
|
P[8][8] = P[7][7];
|
|
P[9][9] = sq(frontend->_baroAltNoise);
|
|
// gyro delta angle biases
|
|
P[10][10] = sq(radians(InitialGyroBiasUncertainty() * dtEkfAvg));
|
|
P[11][11] = P[10][10];
|
|
P[12][12] = P[10][10];
|
|
// delta velocity biases
|
|
P[13][13] = sq(ACCEL_BIAS_LIM_SCALER * frontend->_accBiasLim * dtEkfAvg);
|
|
P[14][14] = P[13][13];
|
|
P[15][15] = P[13][13];
|
|
// earth magnetic field
|
|
P[16][16] = 0.0f;
|
|
P[17][17] = P[16][16];
|
|
P[18][18] = P[16][16];
|
|
// body magnetic field
|
|
P[19][19] = 0.0f;
|
|
P[20][20] = P[19][19];
|
|
P[21][21] = P[19][19];
|
|
// wind velocities
|
|
P[22][22] = 0.0f;
|
|
P[23][23] = P[22][22];
|
|
|
|
|
|
// optical flow ground height covariance
|
|
Popt = 0.25f;
|
|
|
|
}
|
|
|
|
/********************************************************
|
|
* UPDATE FUNCTIONS *
|
|
********************************************************/
|
|
// Update Filter States - this should be called whenever new IMU data is available
|
|
void NavEKF3_core::UpdateFilter(bool predict)
|
|
{
|
|
// Set the flag to indicate to the filter that the front-end has given permission for a new state prediction cycle to be started
|
|
startPredictEnabled = predict;
|
|
|
|
// don't run filter updates if states have not been initialised
|
|
if (!statesInitialised) {
|
|
return;
|
|
}
|
|
|
|
// start the timer used for load measurement
|
|
#if EK3_DISABLE_INTERRUPTS
|
|
void *istate = hal.scheduler->disable_interrupts_save();
|
|
#endif
|
|
hal.util->perf_begin(_perf_UpdateFilter);
|
|
|
|
fill_scratch_variables();
|
|
|
|
// update sensor selection (for affinity)
|
|
update_sensor_selection();
|
|
|
|
// TODO - in-flight restart method
|
|
|
|
// Check arm status and perform required checks and mode changes
|
|
controlFilterModes();
|
|
|
|
// read IMU data as delta angles and velocities
|
|
readIMUData();
|
|
|
|
// Run the EKF equations to estimate at the fusion time horizon if new IMU data is available in the buffer
|
|
if (runUpdates) {
|
|
// Predict states using IMU data from the delayed time horizon
|
|
UpdateStrapdownEquationsNED();
|
|
|
|
// Predict the covariance growth
|
|
CovariancePrediction();
|
|
|
|
// Run the IMU prediction step for the GSF yaw estimator algorithm
|
|
// using IMU and optionally true airspeed data.
|
|
// Must be run before SelectMagFusion() to provide an up to date yaw estimate
|
|
runYawEstimatorPrediction();
|
|
|
|
// Update states using magnetometer or external yaw sensor data
|
|
SelectMagFusion();
|
|
|
|
// Update states using GPS and altimeter data
|
|
SelectVelPosFusion();
|
|
|
|
// Run the GPS velocity correction step for the GSF yaw estimator algorithm
|
|
// and use the yaw estimate to reset the main EKF yaw if requested
|
|
// Muat be run after SelectVelPosFusion() so that fresh GPS data is available
|
|
runYawEstimatorCorrection();
|
|
|
|
// Update states using range beacon data
|
|
SelectRngBcnFusion();
|
|
|
|
// Update states using optical flow data
|
|
SelectFlowFusion();
|
|
|
|
// Update states using body frame odometry data
|
|
SelectBodyOdomFusion();
|
|
|
|
// Update states using airspeed data
|
|
SelectTasFusion();
|
|
|
|
// Update states using sideslip constraint assumption for fly-forward vehicles
|
|
SelectBetaFusion();
|
|
|
|
// Update the filter status
|
|
updateFilterStatus();
|
|
}
|
|
|
|
// Wind output forward from the fusion to output time horizon
|
|
calcOutputStates();
|
|
|
|
// stop the timer used for load measurement
|
|
hal.util->perf_end(_perf_UpdateFilter);
|
|
#if EK3_DISABLE_INTERRUPTS
|
|
hal.scheduler->restore_interrupts(istate);
|
|
#endif
|
|
}
|
|
|
|
void NavEKF3_core::correctDeltaAngle(Vector3f &delAng, float delAngDT, uint8_t gyro_index)
|
|
{
|
|
delAng -= inactiveBias[gyro_index].gyro_bias * (delAngDT / dtEkfAvg);
|
|
}
|
|
|
|
void NavEKF3_core::correctDeltaVelocity(Vector3f &delVel, float delVelDT, uint8_t accel_index)
|
|
{
|
|
delVel -= inactiveBias[accel_index].accel_bias * (delVelDT / dtEkfAvg);
|
|
}
|
|
|
|
/*
|
|
* Update the quaternion, velocity and position states using delayed IMU measurements
|
|
* because the EKF is running on a delayed time horizon. Note that the quaternion is
|
|
* not used by the EKF equations, which instead estimate the error in the attitude of
|
|
* the vehicle when each observation is fused. This attitude error is then used to correct
|
|
* the quaternion.
|
|
*/
|
|
void NavEKF3_core::UpdateStrapdownEquationsNED()
|
|
{
|
|
// update the quaternion states by rotating from the previous attitude through
|
|
// the delta angle rotation quaternion and normalise
|
|
// apply correction for earth's rotation rate
|
|
// % * - and + operators have been overloaded
|
|
stateStruct.quat.rotate(delAngCorrected - prevTnb * earthRateNED*imuDataDelayed.delAngDT);
|
|
stateStruct.quat.normalize();
|
|
|
|
// transform body delta velocities to delta velocities in the nav frame
|
|
// use the nav frame from previous time step as the delta velocities
|
|
// have been rotated into that frame
|
|
// * and + operators have been overloaded
|
|
Vector3f delVelNav; // delta velocity vector in earth axes
|
|
delVelNav = prevTnb.mul_transpose(delVelCorrected);
|
|
delVelNav.z += GRAVITY_MSS*imuDataDelayed.delVelDT;
|
|
|
|
// calculate the body to nav cosine matrix
|
|
stateStruct.quat.inverse().rotation_matrix(prevTnb);
|
|
|
|
// calculate the rate of change of velocity (used for launch detect and other functions)
|
|
velDotNED = delVelNav / imuDataDelayed.delVelDT;
|
|
|
|
// apply a first order lowpass filter
|
|
velDotNEDfilt = velDotNED * 0.05f + velDotNEDfilt * 0.95f;
|
|
|
|
// calculate a magnitude of the filtered nav acceleration (required for GPS
|
|
// variance estimation)
|
|
accNavMag = velDotNEDfilt.length();
|
|
accNavMagHoriz = norm(velDotNEDfilt.x , velDotNEDfilt.y);
|
|
|
|
// if we are not aiding, then limit the horizontal magnitude of acceleration
|
|
// to prevent large manoeuvre transients disturbing the attitude
|
|
if ((PV_AidingMode == AID_NONE) && (accNavMagHoriz > 5.0f)) {
|
|
float gain = 5.0f/accNavMagHoriz;
|
|
delVelNav.x *= gain;
|
|
delVelNav.y *= gain;
|
|
}
|
|
|
|
// save velocity for use in trapezoidal integration for position calcuation
|
|
Vector3f lastVelocity = stateStruct.velocity;
|
|
|
|
// sum delta velocities to get velocity
|
|
stateStruct.velocity += delVelNav;
|
|
|
|
// apply a trapezoidal integration to velocities to calculate position
|
|
stateStruct.position += (stateStruct.velocity + lastVelocity) * (imuDataDelayed.delVelDT*0.5f);
|
|
|
|
// accumulate the bias delta angle and time since last reset by an OF measurement arrival
|
|
delAngBodyOF += delAngCorrected;
|
|
delTimeOF += imuDataDelayed.delAngDT;
|
|
|
|
// limit states to protect against divergence
|
|
ConstrainStates();
|
|
|
|
// If main filter velocity states are valid, update the range beacon receiver position states
|
|
if (filterStatus.flags.horiz_vel) {
|
|
receiverPos += (stateStruct.velocity + lastVelocity) * (imuDataDelayed.delVelDT*0.5f);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Propagate PVA solution forward from the fusion time horizon to the current time horizon
|
|
* using simple observer which performs two functions:
|
|
* 1) Corrects for the delayed time horizon used by the EKF.
|
|
* 2) Applies a LPF to state corrections to prevent 'stepping' in states due to measurement
|
|
* fusion introducing unwanted noise into the control loops.
|
|
* The inspiration for using a complementary filter to correct for time delays in the EKF
|
|
* is based on the work by A Khosravian.
|
|
*
|
|
* "Recursive Attitude Estimation in the Presence of Multi-rate and Multi-delay Vector Measurements"
|
|
* A Khosravian, J Trumpf, R Mahony, T Hamel, Australian National University
|
|
*/
|
|
void NavEKF3_core::calcOutputStates()
|
|
{
|
|
// apply corrections to the IMU data
|
|
Vector3f delAngNewCorrected = imuDataNew.delAng;
|
|
Vector3f delVelNewCorrected = imuDataNew.delVel;
|
|
correctDeltaAngle(delAngNewCorrected, imuDataNew.delAngDT, imuDataNew.gyro_index);
|
|
correctDeltaVelocity(delVelNewCorrected, imuDataNew.delVelDT, imuDataNew.accel_index);
|
|
|
|
// apply corrections to track EKF solution
|
|
Vector3f delAng = delAngNewCorrected + delAngCorrection;
|
|
|
|
// convert the rotation vector to its equivalent quaternion
|
|
Quaternion deltaQuat;
|
|
deltaQuat.from_axis_angle(delAng);
|
|
|
|
// update the quaternion states by rotating from the previous attitude through
|
|
// the delta angle rotation quaternion and normalise
|
|
outputDataNew.quat *= deltaQuat;
|
|
outputDataNew.quat.normalize();
|
|
|
|
// calculate the body to nav cosine matrix
|
|
Matrix3f Tbn_temp;
|
|
outputDataNew.quat.rotation_matrix(Tbn_temp);
|
|
|
|
// transform body delta velocities to delta velocities in the nav frame
|
|
Vector3f delVelNav = Tbn_temp*delVelNewCorrected;
|
|
delVelNav.z += GRAVITY_MSS*imuDataNew.delVelDT;
|
|
|
|
// save velocity for use in trapezoidal integration for position calcuation
|
|
Vector3f lastVelocity = outputDataNew.velocity;
|
|
|
|
// sum delta velocities to get velocity
|
|
outputDataNew.velocity += delVelNav;
|
|
|
|
// Implement third order complementary filter for height and height rate
|
|
// Reference Paper :
|
|
// Optimizing the Gains of the Baro-Inertial Vertical Channel
|
|
// Widnall W.S, Sinha P.K,
|
|
// AIAA Journal of Guidance and Control, 78-1307R
|
|
|
|
// Perform filter calculation using backwards Euler integration
|
|
// Coefficients selected to place all three filter poles at omega
|
|
const float CompFiltOmega = M_2PI * constrain_float(frontend->_hrt_filt_freq, 0.1f, 30.0f);
|
|
float omega2 = CompFiltOmega * CompFiltOmega;
|
|
float pos_err = outputDataNew.position.z - vertCompFiltState.pos;
|
|
float integ1_input = pos_err * omega2 * CompFiltOmega * imuDataNew.delVelDT;
|
|
vertCompFiltState.acc += integ1_input;
|
|
float integ2_input = delVelNav.z + (vertCompFiltState.acc + pos_err * omega2 * 3.0f) * imuDataNew.delVelDT;
|
|
vertCompFiltState.vel += integ2_input;
|
|
float integ3_input = (vertCompFiltState.vel + pos_err * CompFiltOmega * 3.0f) * imuDataNew.delVelDT;
|
|
vertCompFiltState.pos += integ3_input;
|
|
|
|
// apply a trapezoidal integration to velocities to calculate position
|
|
outputDataNew.position += (outputDataNew.velocity + lastVelocity) * (imuDataNew.delVelDT*0.5f);
|
|
|
|
// If the IMU accelerometer is offset from the body frame origin, then calculate corrections
|
|
// that can be added to the EKF velocity and position outputs so that they represent the velocity
|
|
// and position of the body frame origin.
|
|
// Note the * operator has been overloaded to operate as a dot product
|
|
if (!accelPosOffset.is_zero()) {
|
|
// calculate the average angular rate across the last IMU update
|
|
// note delAngDT is prevented from being zero in readIMUData()
|
|
Vector3f angRate = imuDataNew.delAng * (1.0f/imuDataNew.delAngDT);
|
|
|
|
// Calculate the velocity of the body frame origin relative to the IMU in body frame
|
|
// and rotate into earth frame. Note % operator has been overloaded to perform a cross product
|
|
Vector3f velBodyRelIMU = angRate % (- accelPosOffset);
|
|
velOffsetNED = Tbn_temp * velBodyRelIMU;
|
|
|
|
// calculate the earth frame position of the body frame origin relative to the IMU
|
|
posOffsetNED = Tbn_temp * (- accelPosOffset);
|
|
} else {
|
|
velOffsetNED.zero();
|
|
posOffsetNED.zero();
|
|
}
|
|
|
|
// store INS states in a ring buffer that with the same length and time coordinates as the IMU data buffer
|
|
if (runUpdates) {
|
|
// store the states at the output time horizon
|
|
storedOutput[storedIMU.get_youngest_index()] = outputDataNew;
|
|
|
|
// recall the states from the fusion time horizon
|
|
outputDataDelayed = storedOutput[storedIMU.get_oldest_index()];
|
|
|
|
// compare quaternion data with EKF quaternion at the fusion time horizon and calculate correction
|
|
|
|
// divide the demanded quaternion by the estimated to get the error
|
|
Quaternion quatErr = stateStruct.quat / outputDataDelayed.quat;
|
|
|
|
// Convert to a delta rotation using a small angle approximation
|
|
quatErr.normalize();
|
|
Vector3f deltaAngErr;
|
|
float scaler;
|
|
if (quatErr[0] >= 0.0f) {
|
|
scaler = 2.0f;
|
|
} else {
|
|
scaler = -2.0f;
|
|
}
|
|
deltaAngErr.x = scaler * quatErr[1];
|
|
deltaAngErr.y = scaler * quatErr[2];
|
|
deltaAngErr.z = scaler * quatErr[3];
|
|
|
|
// calculate a gain that provides tight tracking of the estimator states and
|
|
// adjust for changes in time delay to maintain consistent damping ratio of ~0.7
|
|
float timeDelay = 1e-3f * (float)(imuDataNew.time_ms - imuDataDelayed.time_ms);
|
|
timeDelay = MAX(timeDelay, dtIMUavg);
|
|
float errorGain = 0.5f / timeDelay;
|
|
|
|
// calculate a correction to the delta angle
|
|
// that will cause the INS to track the EKF quaternions
|
|
delAngCorrection = deltaAngErr * errorGain * dtIMUavg;
|
|
|
|
// calculate velocity and position tracking errors
|
|
Vector3f velErr = (stateStruct.velocity - outputDataDelayed.velocity);
|
|
Vector3f posErr = (stateStruct.position - outputDataDelayed.position);
|
|
|
|
// collect magnitude tracking error for diagnostics
|
|
outputTrackError.x = deltaAngErr.length();
|
|
outputTrackError.y = velErr.length();
|
|
outputTrackError.z = posErr.length();
|
|
|
|
// convert user specified time constant from centi-seconds to seconds
|
|
float tauPosVel = constrain_float(0.01f*(float)frontend->_tauVelPosOutput, 0.1f, 0.5f);
|
|
|
|
// calculate a gain to track the EKF position states with the specified time constant
|
|
float velPosGain = dtEkfAvg / constrain_float(tauPosVel, dtEkfAvg, 10.0f);
|
|
|
|
// use a PI feedback to calculate a correction that will be applied to the output state history
|
|
posErrintegral += posErr;
|
|
velErrintegral += velErr;
|
|
Vector3f velCorrection = velErr * velPosGain + velErrintegral * sq(velPosGain) * 0.1f;
|
|
Vector3f posCorrection = posErr * velPosGain + posErrintegral * sq(velPosGain) * 0.1f;
|
|
|
|
// loop through the output filter state history and apply the corrections to the velocity and position states
|
|
// this method is too expensive to use for the attitude states due to the quaternion operations required
|
|
// but does not introduce a time delay in the 'correction loop' and allows smaller tracking time constants
|
|
// to be used
|
|
output_elements outputStates;
|
|
for (unsigned index=0; index < imu_buffer_length; index++) {
|
|
outputStates = storedOutput[index];
|
|
|
|
// a constant velocity correction is applied
|
|
outputStates.velocity += velCorrection;
|
|
|
|
// a constant position correction is applied
|
|
outputStates.position += posCorrection;
|
|
|
|
// push the updated data to the buffer
|
|
storedOutput[index] = outputStates;
|
|
}
|
|
|
|
// update output state to corrected values
|
|
outputDataNew = storedOutput[storedIMU.get_youngest_index()];
|
|
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Calculate the predicted state covariance matrix using algebraic equations generated with Matlab symbolic toolbox.
|
|
* The script file used to generate these and other equations in this filter can be found here:
|
|
* https://github.com/PX4/ecl/blob/master/matlab/scripts/Inertial%20Nav%20EKF/GenerateNavFilterEquations.m
|
|
*/
|
|
void NavEKF3_core::CovariancePrediction()
|
|
{
|
|
hal.util->perf_begin(_perf_CovariancePrediction);
|
|
float daxVar; // X axis delta angle noise variance rad^2
|
|
float dayVar; // Y axis delta angle noise variance rad^2
|
|
float dazVar; // Z axis delta angle noise variance rad^2
|
|
float dvxVar; // X axis delta velocity variance noise (m/s)^2
|
|
float dvyVar; // Y axis delta velocity variance noise (m/s)^2
|
|
float dvzVar; // Z axis delta velocity variance noise (m/s)^2
|
|
float dvx; // X axis delta velocity (m/s)
|
|
float dvy; // Y axis delta velocity (m/s)
|
|
float dvz; // Z axis delta velocity (m/s)
|
|
float dax; // X axis delta angle (rad)
|
|
float day; // Y axis delta angle (rad)
|
|
float daz; // Z axis delta angle (rad)
|
|
float q0; // attitude quaternion
|
|
float q1; // attitude quaternion
|
|
float q2; // attitude quaternion
|
|
float q3; // attitude quaternion
|
|
float dax_b; // X axis delta angle measurement bias (rad)
|
|
float day_b; // Y axis delta angle measurement bias (rad)
|
|
float daz_b; // Z axis delta angle measurement bias (rad)
|
|
float dvx_b; // X axis delta velocity measurement bias (rad)
|
|
float dvy_b; // Y axis delta velocity measurement bias (rad)
|
|
float dvz_b; // Z axis delta velocity measurement bias (rad)
|
|
|
|
// Calculate the time step used by the covariance prediction as an average of the gyro and accel integration period
|
|
// Constrain to prevent bad timing jitter causing numerical conditioning problems with the covariance prediction
|
|
dt = constrain_float(0.5f*(imuDataDelayed.delAngDT+imuDataDelayed.delVelDT),0.5f * dtEkfAvg, 2.0f * dtEkfAvg);
|
|
|
|
// use filtered height rate to increase wind process noise when climbing or descending
|
|
// this allows for wind gradient effects.Filter height rate using a 10 second time constant filter
|
|
float alpha = 0.1f * dt;
|
|
hgtRate = hgtRate * (1.0f - alpha) - stateStruct.velocity.z * alpha;
|
|
|
|
// calculate covariance prediction process noise added to diagonals of predicted covariance matrix
|
|
// error growth of first 10 kinematic states is built into auto-code for covariance prediction and driven by IMU noise parameters
|
|
Vector14 processNoiseVariance = {};
|
|
|
|
if (!inhibitDelAngBiasStates) {
|
|
float dAngBiasVar = sq(sq(dt) * constrain_float(frontend->_gyroBiasProcessNoise, 0.0f, 1.0f));
|
|
for (uint8_t i=0; i<=2; i++) processNoiseVariance[i] = dAngBiasVar;
|
|
}
|
|
|
|
if (!inhibitDelVelBiasStates) {
|
|
float dVelBiasVar = sq(sq(dt) * constrain_float(frontend->_accelBiasProcessNoise, 0.0f, 1.0f));
|
|
for (uint8_t i=3; i<=5; i++) {
|
|
uint8_t stateIndex = i + 10;
|
|
if (P[stateIndex][stateIndex] > 1E-8f) {
|
|
processNoiseVariance[i] = dVelBiasVar;
|
|
} else {
|
|
// increase the process noise variance up to a maximum of 100 x the nominal value if the variance is below the target minimum
|
|
processNoiseVariance[i] = 10.0f * dVelBiasVar * (1e-8f / fmaxf(P[stateIndex][stateIndex],1e-9f));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!inhibitMagStates && lastInhibitMagStates) {
|
|
// when starting 3D fusion we want to reset body mag variances
|
|
needMagBodyVarReset = true;
|
|
}
|
|
|
|
if (needMagBodyVarReset) {
|
|
// reset body mag variances
|
|
needMagBodyVarReset = false;
|
|
zeroCols(P,19,21);
|
|
zeroRows(P,19,21);
|
|
P[19][19] = sq(frontend->_magNoise);
|
|
P[20][20] = P[19][19];
|
|
P[21][21] = P[19][19];
|
|
}
|
|
|
|
if (!inhibitMagStates) {
|
|
float magEarthVar = sq(dt * constrain_float(frontend->_magEarthProcessNoise, 0.0f, 1.0f));
|
|
float magBodyVar = sq(dt * constrain_float(frontend->_magBodyProcessNoise, 0.0f, 1.0f));
|
|
for (uint8_t i=6; i<=8; i++) processNoiseVariance[i] = magEarthVar;
|
|
for (uint8_t i=9; i<=11; i++) processNoiseVariance[i] = magBodyVar;
|
|
}
|
|
lastInhibitMagStates = inhibitMagStates;
|
|
|
|
if (!inhibitWindStates) {
|
|
float windVelVar = sq(dt * constrain_float(frontend->_windVelProcessNoise, 0.0f, 1.0f) * (1.0f + constrain_float(frontend->_wndVarHgtRateScale, 0.0f, 1.0f) * fabsf(hgtRate)));
|
|
for (uint8_t i=12; i<=13; i++) processNoiseVariance[i] = windVelVar;
|
|
}
|
|
|
|
// set variables used to calculate covariance growth
|
|
dvx = imuDataDelayed.delVel.x;
|
|
dvy = imuDataDelayed.delVel.y;
|
|
dvz = imuDataDelayed.delVel.z;
|
|
dax = imuDataDelayed.delAng.x;
|
|
day = imuDataDelayed.delAng.y;
|
|
daz = imuDataDelayed.delAng.z;
|
|
q0 = stateStruct.quat[0];
|
|
q1 = stateStruct.quat[1];
|
|
q2 = stateStruct.quat[2];
|
|
q3 = stateStruct.quat[3];
|
|
dax_b = stateStruct.gyro_bias.x;
|
|
day_b = stateStruct.gyro_bias.y;
|
|
daz_b = stateStruct.gyro_bias.z;
|
|
dvx_b = stateStruct.accel_bias.x;
|
|
dvy_b = stateStruct.accel_bias.y;
|
|
dvz_b = stateStruct.accel_bias.z;
|
|
float _gyrNoise = constrain_float(frontend->_gyrNoise, 0.0f, 1.0f);
|
|
daxVar = dayVar = dazVar = sq(dt*_gyrNoise);
|
|
float _accNoise = constrain_float(frontend->_accNoise, 0.0f, 10.0f);
|
|
dvxVar = dvyVar = dvzVar = sq(dt*_accNoise);
|
|
|
|
// calculate the predicted covariance due to inertial sensor error propagation
|
|
// we calculate the lower diagonal and copy to take advantage of symmetry
|
|
|
|
// intermediate calculations
|
|
Vector21 SF;
|
|
SF[0] = dvz - dvz_b;
|
|
SF[1] = dvy - dvy_b;
|
|
SF[2] = dvx - dvx_b;
|
|
SF[3] = 2*q1*SF[2] + 2*q2*SF[1] + 2*q3*SF[0];
|
|
SF[4] = 2*q0*SF[1] - 2*q1*SF[0] + 2*q3*SF[2];
|
|
SF[5] = 2*q0*SF[2] + 2*q2*SF[0] - 2*q3*SF[1];
|
|
SF[6] = day/2 - day_b/2;
|
|
SF[7] = daz/2 - daz_b/2;
|
|
SF[8] = dax/2 - dax_b/2;
|
|
SF[9] = dax_b/2 - dax/2;
|
|
SF[10] = daz_b/2 - daz/2;
|
|
SF[11] = day_b/2 - day/2;
|
|
SF[12] = 2*q1*SF[1];
|
|
SF[13] = 2*q0*SF[0];
|
|
SF[14] = q1/2;
|
|
SF[15] = q2/2;
|
|
SF[16] = q3/2;
|
|
SF[17] = sq(q3);
|
|
SF[18] = sq(q2);
|
|
SF[19] = sq(q1);
|
|
SF[20] = sq(q0);
|
|
|
|
Vector8 SG;
|
|
SG[0] = q0/2;
|
|
SG[1] = sq(q3);
|
|
SG[2] = sq(q2);
|
|
SG[3] = sq(q1);
|
|
SG[4] = sq(q0);
|
|
SG[5] = 2*q2*q3;
|
|
SG[6] = 2*q1*q3;
|
|
SG[7] = 2*q1*q2;
|
|
|
|
Vector11 SQ;
|
|
SQ[0] = dvzVar*(SG[5] - 2*q0*q1)*(SG[1] - SG[2] - SG[3] + SG[4]) - dvyVar*(SG[5] + 2*q0*q1)*(SG[1] - SG[2] + SG[3] - SG[4]) + dvxVar*(SG[6] - 2*q0*q2)*(SG[7] + 2*q0*q3);
|
|
SQ[1] = dvzVar*(SG[6] + 2*q0*q2)*(SG[1] - SG[2] - SG[3] + SG[4]) - dvxVar*(SG[6] - 2*q0*q2)*(SG[1] + SG[2] - SG[3] - SG[4]) + dvyVar*(SG[5] + 2*q0*q1)*(SG[7] - 2*q0*q3);
|
|
SQ[2] = dvzVar*(SG[5] - 2*q0*q1)*(SG[6] + 2*q0*q2) - dvyVar*(SG[7] - 2*q0*q3)*(SG[1] - SG[2] + SG[3] - SG[4]) - dvxVar*(SG[7] + 2*q0*q3)*(SG[1] + SG[2] - SG[3] - SG[4]);
|
|
SQ[3] = (dayVar*q1*SG[0])/2 - (dazVar*q1*SG[0])/2 - (daxVar*q2*q3)/4;
|
|
SQ[4] = (dazVar*q2*SG[0])/2 - (daxVar*q2*SG[0])/2 - (dayVar*q1*q3)/4;
|
|
SQ[5] = (daxVar*q3*SG[0])/2 - (dayVar*q3*SG[0])/2 - (dazVar*q1*q2)/4;
|
|
SQ[6] = (daxVar*q1*q2)/4 - (dazVar*q3*SG[0])/2 - (dayVar*q1*q2)/4;
|
|
SQ[7] = (dazVar*q1*q3)/4 - (daxVar*q1*q3)/4 - (dayVar*q2*SG[0])/2;
|
|
SQ[8] = (dayVar*q2*q3)/4 - (daxVar*q1*SG[0])/2 - (dazVar*q2*q3)/4;
|
|
SQ[9] = sq(SG[0]);
|
|
SQ[10] = sq(q1);
|
|
|
|
Vector11 SPP;
|
|
SPP[0] = SF[12] + SF[13] - 2*q2*SF[2];
|
|
SPP[1] = SF[17] - SF[18] - SF[19] + SF[20];
|
|
SPP[2] = SF[17] - SF[18] + SF[19] - SF[20];
|
|
SPP[3] = SF[17] + SF[18] - SF[19] - SF[20];
|
|
SPP[4] = 2*q0*q2 - 2*q1*q3;
|
|
SPP[5] = 2*q0*q1 - 2*q2*q3;
|
|
SPP[6] = 2*q0*q3 - 2*q1*q2;
|
|
SPP[7] = 2*q0*q1 + 2*q2*q3;
|
|
SPP[8] = 2*q0*q3 + 2*q1*q2;
|
|
SPP[9] = 2*q0*q2 + 2*q1*q3;
|
|
SPP[10] = SF[16];
|
|
|
|
|
|
nextP[0][0] = P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10] + (daxVar*SQ[10])/4 + SF[9]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) + SF[11]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SF[10]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) + SF[14]*(P[0][10] + P[1][10]*SF[9] + P[2][10]*SF[11] + P[3][10]*SF[10] + P[10][10]*SF[14] + P[11][10]*SF[15] + P[12][10]*SPP[10]) + SF[15]*(P[0][11] + P[1][11]*SF[9] + P[2][11]*SF[11] + P[3][11]*SF[10] + P[10][11]*SF[14] + P[11][11]*SF[15] + P[12][11]*SPP[10]) + SPP[10]*(P[0][12] + P[1][12]*SF[9] + P[2][12]*SF[11] + P[3][12]*SF[10] + P[10][12]*SF[14] + P[11][12]*SF[15] + P[12][12]*SPP[10]) + (dayVar*sq(q2))/4 + (dazVar*sq(q3))/4;
|
|
nextP[0][1] = P[0][1] + SQ[8] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10] + SF[8]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SF[7]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SF[11]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) - SF[15]*(P[0][12] + P[1][12]*SF[9] + P[2][12]*SF[11] + P[3][12]*SF[10] + P[10][12]*SF[14] + P[11][12]*SF[15] + P[12][12]*SPP[10]) + SPP[10]*(P[0][11] + P[1][11]*SF[9] + P[2][11]*SF[11] + P[3][11]*SF[10] + P[10][11]*SF[14] + P[11][11]*SF[15] + P[12][11]*SPP[10]) - (q0*(P[0][10] + P[1][10]*SF[9] + P[2][10]*SF[11] + P[3][10]*SF[10] + P[10][10]*SF[14] + P[11][10]*SF[15] + P[12][10]*SPP[10]))/2;
|
|
nextP[1][1] = P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] + daxVar*SQ[9] - (P[10][1]*q0)/2 + SF[8]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SF[7]*(P[1][2] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2) + SF[11]*(P[1][3] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2) - SF[15]*(P[1][12] + P[0][12]*SF[8] + P[2][12]*SF[7] + P[3][12]*SF[11] - P[12][12]*SF[15] + P[11][12]*SPP[10] - (P[10][12]*q0)/2) + SPP[10]*(P[1][11] + P[0][11]*SF[8] + P[2][11]*SF[7] + P[3][11]*SF[11] - P[12][11]*SF[15] + P[11][11]*SPP[10] - (P[10][11]*q0)/2) + (dayVar*sq(q3))/4 + (dazVar*sq(q2))/4 - (q0*(P[1][10] + P[0][10]*SF[8] + P[2][10]*SF[7] + P[3][10]*SF[11] - P[12][10]*SF[15] + P[11][10]*SPP[10] - (P[10][10]*q0)/2))/2;
|
|
nextP[0][2] = P[0][2] + SQ[7] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10] + SF[6]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SF[10]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) + SF[8]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) + SF[14]*(P[0][12] + P[1][12]*SF[9] + P[2][12]*SF[11] + P[3][12]*SF[10] + P[10][12]*SF[14] + P[11][12]*SF[15] + P[12][12]*SPP[10]) - SPP[10]*(P[0][10] + P[1][10]*SF[9] + P[2][10]*SF[11] + P[3][10]*SF[10] + P[10][10]*SF[14] + P[11][10]*SF[15] + P[12][10]*SPP[10]) - (q0*(P[0][11] + P[1][11]*SF[9] + P[2][11]*SF[11] + P[3][11]*SF[10] + P[10][11]*SF[14] + P[11][11]*SF[15] + P[12][11]*SPP[10]))/2;
|
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nextP[1][2] = P[1][2] + SQ[5] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2 + SF[6]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SF[10]*(P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] - (P[10][1]*q0)/2) + SF[8]*(P[1][3] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2) + SF[14]*(P[1][12] + P[0][12]*SF[8] + P[2][12]*SF[7] + P[3][12]*SF[11] - P[12][12]*SF[15] + P[11][12]*SPP[10] - (P[10][12]*q0)/2) - SPP[10]*(P[1][10] + P[0][10]*SF[8] + P[2][10]*SF[7] + P[3][10]*SF[11] - P[12][10]*SF[15] + P[11][10]*SPP[10] - (P[10][10]*q0)/2) - (q0*(P[1][11] + P[0][11]*SF[8] + P[2][11]*SF[7] + P[3][11]*SF[11] - P[12][11]*SF[15] + P[11][11]*SPP[10] - (P[10][11]*q0)/2))/2;
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nextP[2][2] = P[2][2] + P[0][2]*SF[6] + P[1][2]*SF[10] + P[3][2]*SF[8] + P[12][2]*SF[14] - P[10][2]*SPP[10] + dayVar*SQ[9] + (dazVar*SQ[10])/4 - (P[11][2]*q0)/2 + SF[6]*(P[2][0] + P[0][0]*SF[6] + P[1][0]*SF[10] + P[3][0]*SF[8] + P[12][0]*SF[14] - P[10][0]*SPP[10] - (P[11][0]*q0)/2) + SF[10]*(P[2][1] + P[0][1]*SF[6] + P[1][1]*SF[10] + P[3][1]*SF[8] + P[12][1]*SF[14] - P[10][1]*SPP[10] - (P[11][1]*q0)/2) + SF[8]*(P[2][3] + P[0][3]*SF[6] + P[1][3]*SF[10] + P[3][3]*SF[8] + P[12][3]*SF[14] - P[10][3]*SPP[10] - (P[11][3]*q0)/2) + SF[14]*(P[2][12] + P[0][12]*SF[6] + P[1][12]*SF[10] + P[3][12]*SF[8] + P[12][12]*SF[14] - P[10][12]*SPP[10] - (P[11][12]*q0)/2) - SPP[10]*(P[2][10] + P[0][10]*SF[6] + P[1][10]*SF[10] + P[3][10]*SF[8] + P[12][10]*SF[14] - P[10][10]*SPP[10] - (P[11][10]*q0)/2) + (daxVar*sq(q3))/4 - (q0*(P[2][11] + P[0][11]*SF[6] + P[1][11]*SF[10] + P[3][11]*SF[8] + P[12][11]*SF[14] - P[10][11]*SPP[10] - (P[11][11]*q0)/2))/2;
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nextP[0][3] = P[0][3] + SQ[6] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10] + SF[7]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SF[6]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) + SF[9]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SF[15]*(P[0][10] + P[1][10]*SF[9] + P[2][10]*SF[11] + P[3][10]*SF[10] + P[10][10]*SF[14] + P[11][10]*SF[15] + P[12][10]*SPP[10]) - SF[14]*(P[0][11] + P[1][11]*SF[9] + P[2][11]*SF[11] + P[3][11]*SF[10] + P[10][11]*SF[14] + P[11][11]*SF[15] + P[12][11]*SPP[10]) - (q0*(P[0][12] + P[1][12]*SF[9] + P[2][12]*SF[11] + P[3][12]*SF[10] + P[10][12]*SF[14] + P[11][12]*SF[15] + P[12][12]*SPP[10]))/2;
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nextP[1][3] = P[1][3] + SQ[4] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2 + SF[7]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SF[6]*(P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] - (P[10][1]*q0)/2) + SF[9]*(P[1][2] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2) + SF[15]*(P[1][10] + P[0][10]*SF[8] + P[2][10]*SF[7] + P[3][10]*SF[11] - P[12][10]*SF[15] + P[11][10]*SPP[10] - (P[10][10]*q0)/2) - SF[14]*(P[1][11] + P[0][11]*SF[8] + P[2][11]*SF[7] + P[3][11]*SF[11] - P[12][11]*SF[15] + P[11][11]*SPP[10] - (P[10][11]*q0)/2) - (q0*(P[1][12] + P[0][12]*SF[8] + P[2][12]*SF[7] + P[3][12]*SF[11] - P[12][12]*SF[15] + P[11][12]*SPP[10] - (P[10][12]*q0)/2))/2;
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nextP[2][3] = P[2][3] + SQ[3] + P[0][3]*SF[6] + P[1][3]*SF[10] + P[3][3]*SF[8] + P[12][3]*SF[14] - P[10][3]*SPP[10] - (P[11][3]*q0)/2 + SF[7]*(P[2][0] + P[0][0]*SF[6] + P[1][0]*SF[10] + P[3][0]*SF[8] + P[12][0]*SF[14] - P[10][0]*SPP[10] - (P[11][0]*q0)/2) + SF[6]*(P[2][1] + P[0][1]*SF[6] + P[1][1]*SF[10] + P[3][1]*SF[8] + P[12][1]*SF[14] - P[10][1]*SPP[10] - (P[11][1]*q0)/2) + SF[9]*(P[2][2] + P[0][2]*SF[6] + P[1][2]*SF[10] + P[3][2]*SF[8] + P[12][2]*SF[14] - P[10][2]*SPP[10] - (P[11][2]*q0)/2) + SF[15]*(P[2][10] + P[0][10]*SF[6] + P[1][10]*SF[10] + P[3][10]*SF[8] + P[12][10]*SF[14] - P[10][10]*SPP[10] - (P[11][10]*q0)/2) - SF[14]*(P[2][11] + P[0][11]*SF[6] + P[1][11]*SF[10] + P[3][11]*SF[8] + P[12][11]*SF[14] - P[10][11]*SPP[10] - (P[11][11]*q0)/2) - (q0*(P[2][12] + P[0][12]*SF[6] + P[1][12]*SF[10] + P[3][12]*SF[8] + P[12][12]*SF[14] - P[10][12]*SPP[10] - (P[11][12]*q0)/2))/2;
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nextP[3][3] = P[3][3] + P[0][3]*SF[7] + P[1][3]*SF[6] + P[2][3]*SF[9] + P[10][3]*SF[15] - P[11][3]*SF[14] + (dayVar*SQ[10])/4 + dazVar*SQ[9] - (P[12][3]*q0)/2 + SF[7]*(P[3][0] + P[0][0]*SF[7] + P[1][0]*SF[6] + P[2][0]*SF[9] + P[10][0]*SF[15] - P[11][0]*SF[14] - (P[12][0]*q0)/2) + SF[6]*(P[3][1] + P[0][1]*SF[7] + P[1][1]*SF[6] + P[2][1]*SF[9] + P[10][1]*SF[15] - P[11][1]*SF[14] - (P[12][1]*q0)/2) + SF[9]*(P[3][2] + P[0][2]*SF[7] + P[1][2]*SF[6] + P[2][2]*SF[9] + P[10][2]*SF[15] - P[11][2]*SF[14] - (P[12][2]*q0)/2) + SF[15]*(P[3][10] + P[0][10]*SF[7] + P[1][10]*SF[6] + P[2][10]*SF[9] + P[10][10]*SF[15] - P[11][10]*SF[14] - (P[12][10]*q0)/2) - SF[14]*(P[3][11] + P[0][11]*SF[7] + P[1][11]*SF[6] + P[2][11]*SF[9] + P[10][11]*SF[15] - P[11][11]*SF[14] - (P[12][11]*q0)/2) + (daxVar*sq(q2))/4 - (q0*(P[3][12] + P[0][12]*SF[7] + P[1][12]*SF[6] + P[2][12]*SF[9] + P[10][12]*SF[15] - P[11][12]*SF[14] - (P[12][12]*q0)/2))/2;
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nextP[0][4] = P[0][4] + P[1][4]*SF[9] + P[2][4]*SF[11] + P[3][4]*SF[10] + P[10][4]*SF[14] + P[11][4]*SF[15] + P[12][4]*SPP[10] + SF[5]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SF[3]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) - SF[4]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) + SPP[0]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SPP[3]*(P[0][13] + P[1][13]*SF[9] + P[2][13]*SF[11] + P[3][13]*SF[10] + P[10][13]*SF[14] + P[11][13]*SF[15] + P[12][13]*SPP[10]) + SPP[6]*(P[0][14] + P[1][14]*SF[9] + P[2][14]*SF[11] + P[3][14]*SF[10] + P[10][14]*SF[14] + P[11][14]*SF[15] + P[12][14]*SPP[10]) - SPP[9]*(P[0][15] + P[1][15]*SF[9] + P[2][15]*SF[11] + P[3][15]*SF[10] + P[10][15]*SF[14] + P[11][15]*SF[15] + P[12][15]*SPP[10]);
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nextP[1][4] = P[1][4] + P[0][4]*SF[8] + P[2][4]*SF[7] + P[3][4]*SF[11] - P[12][4]*SF[15] + P[11][4]*SPP[10] - (P[10][4]*q0)/2 + SF[5]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SF[3]*(P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] - (P[10][1]*q0)/2) - SF[4]*(P[1][3] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2) + SPP[0]*(P[1][2] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2) + SPP[3]*(P[1][13] + P[0][13]*SF[8] + P[2][13]*SF[7] + P[3][13]*SF[11] - P[12][13]*SF[15] + P[11][13]*SPP[10] - (P[10][13]*q0)/2) + SPP[6]*(P[1][14] + P[0][14]*SF[8] + P[2][14]*SF[7] + P[3][14]*SF[11] - P[12][14]*SF[15] + P[11][14]*SPP[10] - (P[10][14]*q0)/2) - SPP[9]*(P[1][15] + P[0][15]*SF[8] + P[2][15]*SF[7] + P[3][15]*SF[11] - P[12][15]*SF[15] + P[11][15]*SPP[10] - (P[10][15]*q0)/2);
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nextP[2][4] = P[2][4] + P[0][4]*SF[6] + P[1][4]*SF[10] + P[3][4]*SF[8] + P[12][4]*SF[14] - P[10][4]*SPP[10] - (P[11][4]*q0)/2 + SF[5]*(P[2][0] + P[0][0]*SF[6] + P[1][0]*SF[10] + P[3][0]*SF[8] + P[12][0]*SF[14] - P[10][0]*SPP[10] - (P[11][0]*q0)/2) + SF[3]*(P[2][1] + P[0][1]*SF[6] + P[1][1]*SF[10] + P[3][1]*SF[8] + P[12][1]*SF[14] - P[10][1]*SPP[10] - (P[11][1]*q0)/2) - SF[4]*(P[2][3] + P[0][3]*SF[6] + P[1][3]*SF[10] + P[3][3]*SF[8] + P[12][3]*SF[14] - P[10][3]*SPP[10] - (P[11][3]*q0)/2) + SPP[0]*(P[2][2] + P[0][2]*SF[6] + P[1][2]*SF[10] + P[3][2]*SF[8] + P[12][2]*SF[14] - P[10][2]*SPP[10] - (P[11][2]*q0)/2) + SPP[3]*(P[2][13] + P[0][13]*SF[6] + P[1][13]*SF[10] + P[3][13]*SF[8] + P[12][13]*SF[14] - P[10][13]*SPP[10] - (P[11][13]*q0)/2) + SPP[6]*(P[2][14] + P[0][14]*SF[6] + P[1][14]*SF[10] + P[3][14]*SF[8] + P[12][14]*SF[14] - P[10][14]*SPP[10] - (P[11][14]*q0)/2) - SPP[9]*(P[2][15] + P[0][15]*SF[6] + P[1][15]*SF[10] + P[3][15]*SF[8] + P[12][15]*SF[14] - P[10][15]*SPP[10] - (P[11][15]*q0)/2);
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nextP[3][4] = P[3][4] + P[0][4]*SF[7] + P[1][4]*SF[6] + P[2][4]*SF[9] + P[10][4]*SF[15] - P[11][4]*SF[14] - (P[12][4]*q0)/2 + SF[5]*(P[3][0] + P[0][0]*SF[7] + P[1][0]*SF[6] + P[2][0]*SF[9] + P[10][0]*SF[15] - P[11][0]*SF[14] - (P[12][0]*q0)/2) + SF[3]*(P[3][1] + P[0][1]*SF[7] + P[1][1]*SF[6] + P[2][1]*SF[9] + P[10][1]*SF[15] - P[11][1]*SF[14] - (P[12][1]*q0)/2) - SF[4]*(P[3][3] + P[0][3]*SF[7] + P[1][3]*SF[6] + P[2][3]*SF[9] + P[10][3]*SF[15] - P[11][3]*SF[14] - (P[12][3]*q0)/2) + SPP[0]*(P[3][2] + P[0][2]*SF[7] + P[1][2]*SF[6] + P[2][2]*SF[9] + P[10][2]*SF[15] - P[11][2]*SF[14] - (P[12][2]*q0)/2) + SPP[3]*(P[3][13] + P[0][13]*SF[7] + P[1][13]*SF[6] + P[2][13]*SF[9] + P[10][13]*SF[15] - P[11][13]*SF[14] - (P[12][13]*q0)/2) + SPP[6]*(P[3][14] + P[0][14]*SF[7] + P[1][14]*SF[6] + P[2][14]*SF[9] + P[10][14]*SF[15] - P[11][14]*SF[14] - (P[12][14]*q0)/2) - SPP[9]*(P[3][15] + P[0][15]*SF[7] + P[1][15]*SF[6] + P[2][15]*SF[9] + P[10][15]*SF[15] - P[11][15]*SF[14] - (P[12][15]*q0)/2);
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nextP[4][4] = P[4][4] + P[0][4]*SF[5] + P[1][4]*SF[3] - P[3][4]*SF[4] + P[2][4]*SPP[0] + P[13][4]*SPP[3] + P[14][4]*SPP[6] - P[15][4]*SPP[9] + dvyVar*sq(SG[7] - 2*q0*q3) + dvzVar*sq(SG[6] + 2*q0*q2) + SF[5]*(P[4][0] + P[0][0]*SF[5] + P[1][0]*SF[3] - P[3][0]*SF[4] + P[2][0]*SPP[0] + P[13][0]*SPP[3] + P[14][0]*SPP[6] - P[15][0]*SPP[9]) + SF[3]*(P[4][1] + P[0][1]*SF[5] + P[1][1]*SF[3] - P[3][1]*SF[4] + P[2][1]*SPP[0] + P[13][1]*SPP[3] + P[14][1]*SPP[6] - P[15][1]*SPP[9]) - SF[4]*(P[4][3] + P[0][3]*SF[5] + P[1][3]*SF[3] - P[3][3]*SF[4] + P[2][3]*SPP[0] + P[13][3]*SPP[3] + P[14][3]*SPP[6] - P[15][3]*SPP[9]) + SPP[0]*(P[4][2] + P[0][2]*SF[5] + P[1][2]*SF[3] - P[3][2]*SF[4] + P[2][2]*SPP[0] + P[13][2]*SPP[3] + P[14][2]*SPP[6] - P[15][2]*SPP[9]) + SPP[3]*(P[4][13] + P[0][13]*SF[5] + P[1][13]*SF[3] - P[3][13]*SF[4] + P[2][13]*SPP[0] + P[13][13]*SPP[3] + P[14][13]*SPP[6] - P[15][13]*SPP[9]) + SPP[6]*(P[4][14] + P[0][14]*SF[5] + P[1][14]*SF[3] - P[3][14]*SF[4] + P[2][14]*SPP[0] + P[13][14]*SPP[3] + P[14][14]*SPP[6] - P[15][14]*SPP[9]) - SPP[9]*(P[4][15] + P[0][15]*SF[5] + P[1][15]*SF[3] - P[3][15]*SF[4] + P[2][15]*SPP[0] + P[13][15]*SPP[3] + P[14][15]*SPP[6] - P[15][15]*SPP[9]) + dvxVar*sq(SG[1] + SG[2] - SG[3] - SG[4]);
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nextP[0][5] = P[0][5] + P[1][5]*SF[9] + P[2][5]*SF[11] + P[3][5]*SF[10] + P[10][5]*SF[14] + P[11][5]*SF[15] + P[12][5]*SPP[10] + SF[4]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SF[3]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SF[5]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) - SPP[0]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) - SPP[8]*(P[0][13] + P[1][13]*SF[9] + P[2][13]*SF[11] + P[3][13]*SF[10] + P[10][13]*SF[14] + P[11][13]*SF[15] + P[12][13]*SPP[10]) + SPP[2]*(P[0][14] + P[1][14]*SF[9] + P[2][14]*SF[11] + P[3][14]*SF[10] + P[10][14]*SF[14] + P[11][14]*SF[15] + P[12][14]*SPP[10]) + SPP[5]*(P[0][15] + P[1][15]*SF[9] + P[2][15]*SF[11] + P[3][15]*SF[10] + P[10][15]*SF[14] + P[11][15]*SF[15] + P[12][15]*SPP[10]);
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nextP[1][5] = P[1][5] + P[0][5]*SF[8] + P[2][5]*SF[7] + P[3][5]*SF[11] - P[12][5]*SF[15] + P[11][5]*SPP[10] - (P[10][5]*q0)/2 + SF[4]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SF[3]*(P[1][2] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2) + SF[5]*(P[1][3] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2) - SPP[0]*(P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] - (P[10][1]*q0)/2) - SPP[8]*(P[1][13] + P[0][13]*SF[8] + P[2][13]*SF[7] + P[3][13]*SF[11] - P[12][13]*SF[15] + P[11][13]*SPP[10] - (P[10][13]*q0)/2) + SPP[2]*(P[1][14] + P[0][14]*SF[8] + P[2][14]*SF[7] + P[3][14]*SF[11] - P[12][14]*SF[15] + P[11][14]*SPP[10] - (P[10][14]*q0)/2) + SPP[5]*(P[1][15] + P[0][15]*SF[8] + P[2][15]*SF[7] + P[3][15]*SF[11] - P[12][15]*SF[15] + P[11][15]*SPP[10] - (P[10][15]*q0)/2);
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nextP[2][5] = P[2][5] + P[0][5]*SF[6] + P[1][5]*SF[10] + P[3][5]*SF[8] + P[12][5]*SF[14] - P[10][5]*SPP[10] - (P[11][5]*q0)/2 + SF[4]*(P[2][0] + P[0][0]*SF[6] + P[1][0]*SF[10] + P[3][0]*SF[8] + P[12][0]*SF[14] - P[10][0]*SPP[10] - (P[11][0]*q0)/2) + SF[3]*(P[2][2] + P[0][2]*SF[6] + P[1][2]*SF[10] + P[3][2]*SF[8] + P[12][2]*SF[14] - P[10][2]*SPP[10] - (P[11][2]*q0)/2) + SF[5]*(P[2][3] + P[0][3]*SF[6] + P[1][3]*SF[10] + P[3][3]*SF[8] + P[12][3]*SF[14] - P[10][3]*SPP[10] - (P[11][3]*q0)/2) - SPP[0]*(P[2][1] + P[0][1]*SF[6] + P[1][1]*SF[10] + P[3][1]*SF[8] + P[12][1]*SF[14] - P[10][1]*SPP[10] - (P[11][1]*q0)/2) - SPP[8]*(P[2][13] + P[0][13]*SF[6] + P[1][13]*SF[10] + P[3][13]*SF[8] + P[12][13]*SF[14] - P[10][13]*SPP[10] - (P[11][13]*q0)/2) + SPP[2]*(P[2][14] + P[0][14]*SF[6] + P[1][14]*SF[10] + P[3][14]*SF[8] + P[12][14]*SF[14] - P[10][14]*SPP[10] - (P[11][14]*q0)/2) + SPP[5]*(P[2][15] + P[0][15]*SF[6] + P[1][15]*SF[10] + P[3][15]*SF[8] + P[12][15]*SF[14] - P[10][15]*SPP[10] - (P[11][15]*q0)/2);
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nextP[3][5] = P[3][5] + P[0][5]*SF[7] + P[1][5]*SF[6] + P[2][5]*SF[9] + P[10][5]*SF[15] - P[11][5]*SF[14] - (P[12][5]*q0)/2 + SF[4]*(P[3][0] + P[0][0]*SF[7] + P[1][0]*SF[6] + P[2][0]*SF[9] + P[10][0]*SF[15] - P[11][0]*SF[14] - (P[12][0]*q0)/2) + SF[3]*(P[3][2] + P[0][2]*SF[7] + P[1][2]*SF[6] + P[2][2]*SF[9] + P[10][2]*SF[15] - P[11][2]*SF[14] - (P[12][2]*q0)/2) + SF[5]*(P[3][3] + P[0][3]*SF[7] + P[1][3]*SF[6] + P[2][3]*SF[9] + P[10][3]*SF[15] - P[11][3]*SF[14] - (P[12][3]*q0)/2) - SPP[0]*(P[3][1] + P[0][1]*SF[7] + P[1][1]*SF[6] + P[2][1]*SF[9] + P[10][1]*SF[15] - P[11][1]*SF[14] - (P[12][1]*q0)/2) - SPP[8]*(P[3][13] + P[0][13]*SF[7] + P[1][13]*SF[6] + P[2][13]*SF[9] + P[10][13]*SF[15] - P[11][13]*SF[14] - (P[12][13]*q0)/2) + SPP[2]*(P[3][14] + P[0][14]*SF[7] + P[1][14]*SF[6] + P[2][14]*SF[9] + P[10][14]*SF[15] - P[11][14]*SF[14] - (P[12][14]*q0)/2) + SPP[5]*(P[3][15] + P[0][15]*SF[7] + P[1][15]*SF[6] + P[2][15]*SF[9] + P[10][15]*SF[15] - P[11][15]*SF[14] - (P[12][15]*q0)/2);
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nextP[4][5] = P[4][5] + SQ[2] + P[0][5]*SF[5] + P[1][5]*SF[3] - P[3][5]*SF[4] + P[2][5]*SPP[0] + P[13][5]*SPP[3] + P[14][5]*SPP[6] - P[15][5]*SPP[9] + SF[4]*(P[4][0] + P[0][0]*SF[5] + P[1][0]*SF[3] - P[3][0]*SF[4] + P[2][0]*SPP[0] + P[13][0]*SPP[3] + P[14][0]*SPP[6] - P[15][0]*SPP[9]) + SF[3]*(P[4][2] + P[0][2]*SF[5] + P[1][2]*SF[3] - P[3][2]*SF[4] + P[2][2]*SPP[0] + P[13][2]*SPP[3] + P[14][2]*SPP[6] - P[15][2]*SPP[9]) + SF[5]*(P[4][3] + P[0][3]*SF[5] + P[1][3]*SF[3] - P[3][3]*SF[4] + P[2][3]*SPP[0] + P[13][3]*SPP[3] + P[14][3]*SPP[6] - P[15][3]*SPP[9]) - SPP[0]*(P[4][1] + P[0][1]*SF[5] + P[1][1]*SF[3] - P[3][1]*SF[4] + P[2][1]*SPP[0] + P[13][1]*SPP[3] + P[14][1]*SPP[6] - P[15][1]*SPP[9]) - SPP[8]*(P[4][13] + P[0][13]*SF[5] + P[1][13]*SF[3] - P[3][13]*SF[4] + P[2][13]*SPP[0] + P[13][13]*SPP[3] + P[14][13]*SPP[6] - P[15][13]*SPP[9]) + SPP[2]*(P[4][14] + P[0][14]*SF[5] + P[1][14]*SF[3] - P[3][14]*SF[4] + P[2][14]*SPP[0] + P[13][14]*SPP[3] + P[14][14]*SPP[6] - P[15][14]*SPP[9]) + SPP[5]*(P[4][15] + P[0][15]*SF[5] + P[1][15]*SF[3] - P[3][15]*SF[4] + P[2][15]*SPP[0] + P[13][15]*SPP[3] + P[14][15]*SPP[6] - P[15][15]*SPP[9]);
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nextP[5][5] = P[5][5] + P[0][5]*SF[4] + P[2][5]*SF[3] + P[3][5]*SF[5] - P[1][5]*SPP[0] - P[13][5]*SPP[8] + P[14][5]*SPP[2] + P[15][5]*SPP[5] + dvxVar*sq(SG[7] + 2*q0*q3) + dvzVar*sq(SG[5] - 2*q0*q1) + SF[4]*(P[5][0] + P[0][0]*SF[4] + P[2][0]*SF[3] + P[3][0]*SF[5] - P[1][0]*SPP[0] - P[13][0]*SPP[8] + P[14][0]*SPP[2] + P[15][0]*SPP[5]) + SF[3]*(P[5][2] + P[0][2]*SF[4] + P[2][2]*SF[3] + P[3][2]*SF[5] - P[1][2]*SPP[0] - P[13][2]*SPP[8] + P[14][2]*SPP[2] + P[15][2]*SPP[5]) + SF[5]*(P[5][3] + P[0][3]*SF[4] + P[2][3]*SF[3] + P[3][3]*SF[5] - P[1][3]*SPP[0] - P[13][3]*SPP[8] + P[14][3]*SPP[2] + P[15][3]*SPP[5]) - SPP[0]*(P[5][1] + P[0][1]*SF[4] + P[2][1]*SF[3] + P[3][1]*SF[5] - P[1][1]*SPP[0] - P[13][1]*SPP[8] + P[14][1]*SPP[2] + P[15][1]*SPP[5]) - SPP[8]*(P[5][13] + P[0][13]*SF[4] + P[2][13]*SF[3] + P[3][13]*SF[5] - P[1][13]*SPP[0] - P[13][13]*SPP[8] + P[14][13]*SPP[2] + P[15][13]*SPP[5]) + SPP[2]*(P[5][14] + P[0][14]*SF[4] + P[2][14]*SF[3] + P[3][14]*SF[5] - P[1][14]*SPP[0] - P[13][14]*SPP[8] + P[14][14]*SPP[2] + P[15][14]*SPP[5]) + SPP[5]*(P[5][15] + P[0][15]*SF[4] + P[2][15]*SF[3] + P[3][15]*SF[5] - P[1][15]*SPP[0] - P[13][15]*SPP[8] + P[14][15]*SPP[2] + P[15][15]*SPP[5]) + dvyVar*sq(SG[1] - SG[2] + SG[3] - SG[4]);
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nextP[0][6] = P[0][6] + P[1][6]*SF[9] + P[2][6]*SF[11] + P[3][6]*SF[10] + P[10][6]*SF[14] + P[11][6]*SF[15] + P[12][6]*SPP[10] + SF[4]*(P[0][1] + P[1][1]*SF[9] + P[2][1]*SF[11] + P[3][1]*SF[10] + P[10][1]*SF[14] + P[11][1]*SF[15] + P[12][1]*SPP[10]) - SF[5]*(P[0][2] + P[1][2]*SF[9] + P[2][2]*SF[11] + P[3][2]*SF[10] + P[10][2]*SF[14] + P[11][2]*SF[15] + P[12][2]*SPP[10]) + SF[3]*(P[0][3] + P[1][3]*SF[9] + P[2][3]*SF[11] + P[3][3]*SF[10] + P[10][3]*SF[14] + P[11][3]*SF[15] + P[12][3]*SPP[10]) + SPP[0]*(P[0][0] + P[1][0]*SF[9] + P[2][0]*SF[11] + P[3][0]*SF[10] + P[10][0]*SF[14] + P[11][0]*SF[15] + P[12][0]*SPP[10]) + SPP[4]*(P[0][13] + P[1][13]*SF[9] + P[2][13]*SF[11] + P[3][13]*SF[10] + P[10][13]*SF[14] + P[11][13]*SF[15] + P[12][13]*SPP[10]) - SPP[7]*(P[0][14] + P[1][14]*SF[9] + P[2][14]*SF[11] + P[3][14]*SF[10] + P[10][14]*SF[14] + P[11][14]*SF[15] + P[12][14]*SPP[10]) - SPP[1]*(P[0][15] + P[1][15]*SF[9] + P[2][15]*SF[11] + P[3][15]*SF[10] + P[10][15]*SF[14] + P[11][15]*SF[15] + P[12][15]*SPP[10]);
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nextP[1][6] = P[1][6] + P[0][6]*SF[8] + P[2][6]*SF[7] + P[3][6]*SF[11] - P[12][6]*SF[15] + P[11][6]*SPP[10] - (P[10][6]*q0)/2 + SF[4]*(P[1][1] + P[0][1]*SF[8] + P[2][1]*SF[7] + P[3][1]*SF[11] - P[12][1]*SF[15] + P[11][1]*SPP[10] - (P[10][1]*q0)/2) - SF[5]*(P[1][2] + P[0][2]*SF[8] + P[2][2]*SF[7] + P[3][2]*SF[11] - P[12][2]*SF[15] + P[11][2]*SPP[10] - (P[10][2]*q0)/2) + SF[3]*(P[1][3] + P[0][3]*SF[8] + P[2][3]*SF[7] + P[3][3]*SF[11] - P[12][3]*SF[15] + P[11][3]*SPP[10] - (P[10][3]*q0)/2) + SPP[0]*(P[1][0] + P[0][0]*SF[8] + P[2][0]*SF[7] + P[3][0]*SF[11] - P[12][0]*SF[15] + P[11][0]*SPP[10] - (P[10][0]*q0)/2) + SPP[4]*(P[1][13] + P[0][13]*SF[8] + P[2][13]*SF[7] + P[3][13]*SF[11] - P[12][13]*SF[15] + P[11][13]*SPP[10] - (P[10][13]*q0)/2) - SPP[7]*(P[1][14] + P[0][14]*SF[8] + P[2][14]*SF[7] + P[3][14]*SF[11] - P[12][14]*SF[15] + P[11][14]*SPP[10] - (P[10][14]*q0)/2) - SPP[1]*(P[1][15] + P[0][15]*SF[8] + P[2][15]*SF[7] + P[3][15]*SF[11] - P[12][15]*SF[15] + P[11][15]*SPP[10] - (P[10][15]*q0)/2);
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nextP[2][6] = P[2][6] + P[0][6]*SF[6] + P[1][6]*SF[10] + P[3][6]*SF[8] + P[12][6]*SF[14] - P[10][6]*SPP[10] - (P[11][6]*q0)/2 + SF[4]*(P[2][1] + P[0][1]*SF[6] + P[1][1]*SF[10] + P[3][1]*SF[8] + P[12][1]*SF[14] - P[10][1]*SPP[10] - (P[11][1]*q0)/2) - SF[5]*(P[2][2] + P[0][2]*SF[6] + P[1][2]*SF[10] + P[3][2]*SF[8] + P[12][2]*SF[14] - P[10][2]*SPP[10] - (P[11][2]*q0)/2) + SF[3]*(P[2][3] + P[0][3]*SF[6] + P[1][3]*SF[10] + P[3][3]*SF[8] + P[12][3]*SF[14] - P[10][3]*SPP[10] - (P[11][3]*q0)/2) + SPP[0]*(P[2][0] + P[0][0]*SF[6] + P[1][0]*SF[10] + P[3][0]*SF[8] + P[12][0]*SF[14] - P[10][0]*SPP[10] - (P[11][0]*q0)/2) + SPP[4]*(P[2][13] + P[0][13]*SF[6] + P[1][13]*SF[10] + P[3][13]*SF[8] + P[12][13]*SF[14] - P[10][13]*SPP[10] - (P[11][13]*q0)/2) - SPP[7]*(P[2][14] + P[0][14]*SF[6] + P[1][14]*SF[10] + P[3][14]*SF[8] + P[12][14]*SF[14] - P[10][14]*SPP[10] - (P[11][14]*q0)/2) - SPP[1]*(P[2][15] + P[0][15]*SF[6] + P[1][15]*SF[10] + P[3][15]*SF[8] + P[12][15]*SF[14] - P[10][15]*SPP[10] - (P[11][15]*q0)/2);
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nextP[3][6] = P[3][6] + P[0][6]*SF[7] + P[1][6]*SF[6] + P[2][6]*SF[9] + P[10][6]*SF[15] - P[11][6]*SF[14] - (P[12][6]*q0)/2 + SF[4]*(P[3][1] + P[0][1]*SF[7] + P[1][1]*SF[6] + P[2][1]*SF[9] + P[10][1]*SF[15] - P[11][1]*SF[14] - (P[12][1]*q0)/2) - SF[5]*(P[3][2] + P[0][2]*SF[7] + P[1][2]*SF[6] + P[2][2]*SF[9] + P[10][2]*SF[15] - P[11][2]*SF[14] - (P[12][2]*q0)/2) + SF[3]*(P[3][3] + P[0][3]*SF[7] + P[1][3]*SF[6] + P[2][3]*SF[9] + P[10][3]*SF[15] - P[11][3]*SF[14] - (P[12][3]*q0)/2) + SPP[0]*(P[3][0] + P[0][0]*SF[7] + P[1][0]*SF[6] + P[2][0]*SF[9] + P[10][0]*SF[15] - P[11][0]*SF[14] - (P[12][0]*q0)/2) + SPP[4]*(P[3][13] + P[0][13]*SF[7] + P[1][13]*SF[6] + P[2][13]*SF[9] + P[10][13]*SF[15] - P[11][13]*SF[14] - (P[12][13]*q0)/2) - SPP[7]*(P[3][14] + P[0][14]*SF[7] + P[1][14]*SF[6] + P[2][14]*SF[9] + P[10][14]*SF[15] - P[11][14]*SF[14] - (P[12][14]*q0)/2) - SPP[1]*(P[3][15] + P[0][15]*SF[7] + P[1][15]*SF[6] + P[2][15]*SF[9] + P[10][15]*SF[15] - P[11][15]*SF[14] - (P[12][15]*q0)/2);
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nextP[4][6] = P[4][6] + SQ[1] + P[0][6]*SF[5] + P[1][6]*SF[3] - P[3][6]*SF[4] + P[2][6]*SPP[0] + P[13][6]*SPP[3] + P[14][6]*SPP[6] - P[15][6]*SPP[9] + SF[4]*(P[4][1] + P[0][1]*SF[5] + P[1][1]*SF[3] - P[3][1]*SF[4] + P[2][1]*SPP[0] + P[13][1]*SPP[3] + P[14][1]*SPP[6] - P[15][1]*SPP[9]) - SF[5]*(P[4][2] + P[0][2]*SF[5] + P[1][2]*SF[3] - P[3][2]*SF[4] + P[2][2]*SPP[0] + P[13][2]*SPP[3] + P[14][2]*SPP[6] - P[15][2]*SPP[9]) + SF[3]*(P[4][3] + P[0][3]*SF[5] + P[1][3]*SF[3] - P[3][3]*SF[4] + P[2][3]*SPP[0] + P[13][3]*SPP[3] + P[14][3]*SPP[6] - P[15][3]*SPP[9]) + SPP[0]*(P[4][0] + P[0][0]*SF[5] + P[1][0]*SF[3] - P[3][0]*SF[4] + P[2][0]*SPP[0] + P[13][0]*SPP[3] + P[14][0]*SPP[6] - P[15][0]*SPP[9]) + SPP[4]*(P[4][13] + P[0][13]*SF[5] + P[1][13]*SF[3] - P[3][13]*SF[4] + P[2][13]*SPP[0] + P[13][13]*SPP[3] + P[14][13]*SPP[6] - P[15][13]*SPP[9]) - SPP[7]*(P[4][14] + P[0][14]*SF[5] + P[1][14]*SF[3] - P[3][14]*SF[4] + P[2][14]*SPP[0] + P[13][14]*SPP[3] + P[14][14]*SPP[6] - P[15][14]*SPP[9]) - SPP[1]*(P[4][15] + P[0][15]*SF[5] + P[1][15]*SF[3] - P[3][15]*SF[4] + P[2][15]*SPP[0] + P[13][15]*SPP[3] + P[14][15]*SPP[6] - P[15][15]*SPP[9]);
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nextP[5][6] = P[5][6] + SQ[0] + P[0][6]*SF[4] + P[2][6]*SF[3] + P[3][6]*SF[5] - P[1][6]*SPP[0] - P[13][6]*SPP[8] + P[14][6]*SPP[2] + P[15][6]*SPP[5] + SF[4]*(P[5][1] + P[0][1]*SF[4] + P[2][1]*SF[3] + P[3][1]*SF[5] - P[1][1]*SPP[0] - P[13][1]*SPP[8] + P[14][1]*SPP[2] + P[15][1]*SPP[5]) - SF[5]*(P[5][2] + P[0][2]*SF[4] + P[2][2]*SF[3] + P[3][2]*SF[5] - P[1][2]*SPP[0] - P[13][2]*SPP[8] + P[14][2]*SPP[2] + P[15][2]*SPP[5]) + SF[3]*(P[5][3] + P[0][3]*SF[4] + P[2][3]*SF[3] + P[3][3]*SF[5] - P[1][3]*SPP[0] - P[13][3]*SPP[8] + P[14][3]*SPP[2] + P[15][3]*SPP[5]) + SPP[0]*(P[5][0] + P[0][0]*SF[4] + P[2][0]*SF[3] + P[3][0]*SF[5] - P[1][0]*SPP[0] - P[13][0]*SPP[8] + P[14][0]*SPP[2] + P[15][0]*SPP[5]) + SPP[4]*(P[5][13] + P[0][13]*SF[4] + P[2][13]*SF[3] + P[3][13]*SF[5] - P[1][13]*SPP[0] - P[13][13]*SPP[8] + P[14][13]*SPP[2] + P[15][13]*SPP[5]) - SPP[7]*(P[5][14] + P[0][14]*SF[4] + P[2][14]*SF[3] + P[3][14]*SF[5] - P[1][14]*SPP[0] - P[13][14]*SPP[8] + P[14][14]*SPP[2] + P[15][14]*SPP[5]) - SPP[1]*(P[5][15] + P[0][15]*SF[4] + P[2][15]*SF[3] + P[3][15]*SF[5] - P[1][15]*SPP[0] - P[13][15]*SPP[8] + P[14][15]*SPP[2] + P[15][15]*SPP[5]);
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nextP[6][6] = P[6][6] + P[1][6]*SF[4] - P[2][6]*SF[5] + P[3][6]*SF[3] + P[0][6]*SPP[0] + P[13][6]*SPP[4] - P[14][6]*SPP[7] - P[15][6]*SPP[1] + dvxVar*sq(SG[6] - 2*q0*q2) + dvyVar*sq(SG[5] + 2*q0*q1) + SF[4]*(P[6][1] + P[1][1]*SF[4] - P[2][1]*SF[5] + P[3][1]*SF[3] + P[0][1]*SPP[0] + P[13][1]*SPP[4] - P[14][1]*SPP[7] - P[15][1]*SPP[1]) - SF[5]*(P[6][2] + P[1][2]*SF[4] - P[2][2]*SF[5] + P[3][2]*SF[3] + P[0][2]*SPP[0] + P[13][2]*SPP[4] - P[14][2]*SPP[7] - P[15][2]*SPP[1]) + SF[3]*(P[6][3] + P[1][3]*SF[4] - P[2][3]*SF[5] + P[3][3]*SF[3] + P[0][3]*SPP[0] + P[13][3]*SPP[4] - P[14][3]*SPP[7] - P[15][3]*SPP[1]) + SPP[0]*(P[6][0] + P[1][0]*SF[4] - P[2][0]*SF[5] + P[3][0]*SF[3] + P[0][0]*SPP[0] + P[13][0]*SPP[4] - P[14][0]*SPP[7] - P[15][0]*SPP[1]) + SPP[4]*(P[6][13] + P[1][13]*SF[4] - P[2][13]*SF[5] + P[3][13]*SF[3] + P[0][13]*SPP[0] + P[13][13]*SPP[4] - P[14][13]*SPP[7] - P[15][13]*SPP[1]) - SPP[7]*(P[6][14] + P[1][14]*SF[4] - P[2][14]*SF[5] + P[3][14]*SF[3] + P[0][14]*SPP[0] + P[13][14]*SPP[4] - P[14][14]*SPP[7] - P[15][14]*SPP[1]) - SPP[1]*(P[6][15] + P[1][15]*SF[4] - P[2][15]*SF[5] + P[3][15]*SF[3] + P[0][15]*SPP[0] + P[13][15]*SPP[4] - P[14][15]*SPP[7] - P[15][15]*SPP[1]) + dvzVar*sq(SG[1] - SG[2] - SG[3] + SG[4]);
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nextP[0][7] = P[0][7] + P[1][7]*SF[9] + P[2][7]*SF[11] + P[3][7]*SF[10] + P[10][7]*SF[14] + P[11][7]*SF[15] + P[12][7]*SPP[10] + dt*(P[0][4] + P[1][4]*SF[9] + P[2][4]*SF[11] + P[3][4]*SF[10] + P[10][4]*SF[14] + P[11][4]*SF[15] + P[12][4]*SPP[10]);
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nextP[1][7] = P[1][7] + P[0][7]*SF[8] + P[2][7]*SF[7] + P[3][7]*SF[11] - P[12][7]*SF[15] + P[11][7]*SPP[10] - (P[10][7]*q0)/2 + dt*(P[1][4] + P[0][4]*SF[8] + P[2][4]*SF[7] + P[3][4]*SF[11] - P[12][4]*SF[15] + P[11][4]*SPP[10] - (P[10][4]*q0)/2);
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nextP[2][7] = P[2][7] + P[0][7]*SF[6] + P[1][7]*SF[10] + P[3][7]*SF[8] + P[12][7]*SF[14] - P[10][7]*SPP[10] - (P[11][7]*q0)/2 + dt*(P[2][4] + P[0][4]*SF[6] + P[1][4]*SF[10] + P[3][4]*SF[8] + P[12][4]*SF[14] - P[10][4]*SPP[10] - (P[11][4]*q0)/2);
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nextP[3][7] = P[3][7] + P[0][7]*SF[7] + P[1][7]*SF[6] + P[2][7]*SF[9] + P[10][7]*SF[15] - P[11][7]*SF[14] - (P[12][7]*q0)/2 + dt*(P[3][4] + P[0][4]*SF[7] + P[1][4]*SF[6] + P[2][4]*SF[9] + P[10][4]*SF[15] - P[11][4]*SF[14] - (P[12][4]*q0)/2);
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nextP[4][7] = P[4][7] + P[0][7]*SF[5] + P[1][7]*SF[3] - P[3][7]*SF[4] + P[2][7]*SPP[0] + P[13][7]*SPP[3] + P[14][7]*SPP[6] - P[15][7]*SPP[9] + dt*(P[4][4] + P[0][4]*SF[5] + P[1][4]*SF[3] - P[3][4]*SF[4] + P[2][4]*SPP[0] + P[13][4]*SPP[3] + P[14][4]*SPP[6] - P[15][4]*SPP[9]);
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nextP[5][7] = P[5][7] + P[0][7]*SF[4] + P[2][7]*SF[3] + P[3][7]*SF[5] - P[1][7]*SPP[0] - P[13][7]*SPP[8] + P[14][7]*SPP[2] + P[15][7]*SPP[5] + dt*(P[5][4] + P[0][4]*SF[4] + P[2][4]*SF[3] + P[3][4]*SF[5] - P[1][4]*SPP[0] - P[13][4]*SPP[8] + P[14][4]*SPP[2] + P[15][4]*SPP[5]);
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nextP[6][7] = P[6][7] + P[1][7]*SF[4] - P[2][7]*SF[5] + P[3][7]*SF[3] + P[0][7]*SPP[0] + P[13][7]*SPP[4] - P[14][7]*SPP[7] - P[15][7]*SPP[1] + dt*(P[6][4] + P[1][4]*SF[4] - P[2][4]*SF[5] + P[3][4]*SF[3] + P[0][4]*SPP[0] + P[13][4]*SPP[4] - P[14][4]*SPP[7] - P[15][4]*SPP[1]);
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nextP[7][7] = P[7][7] + P[4][7]*dt + dt*(P[7][4] + P[4][4]*dt);
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nextP[0][8] = P[0][8] + P[1][8]*SF[9] + P[2][8]*SF[11] + P[3][8]*SF[10] + P[10][8]*SF[14] + P[11][8]*SF[15] + P[12][8]*SPP[10] + dt*(P[0][5] + P[1][5]*SF[9] + P[2][5]*SF[11] + P[3][5]*SF[10] + P[10][5]*SF[14] + P[11][5]*SF[15] + P[12][5]*SPP[10]);
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nextP[1][8] = P[1][8] + P[0][8]*SF[8] + P[2][8]*SF[7] + P[3][8]*SF[11] - P[12][8]*SF[15] + P[11][8]*SPP[10] - (P[10][8]*q0)/2 + dt*(P[1][5] + P[0][5]*SF[8] + P[2][5]*SF[7] + P[3][5]*SF[11] - P[12][5]*SF[15] + P[11][5]*SPP[10] - (P[10][5]*q0)/2);
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nextP[2][8] = P[2][8] + P[0][8]*SF[6] + P[1][8]*SF[10] + P[3][8]*SF[8] + P[12][8]*SF[14] - P[10][8]*SPP[10] - (P[11][8]*q0)/2 + dt*(P[2][5] + P[0][5]*SF[6] + P[1][5]*SF[10] + P[3][5]*SF[8] + P[12][5]*SF[14] - P[10][5]*SPP[10] - (P[11][5]*q0)/2);
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nextP[3][8] = P[3][8] + P[0][8]*SF[7] + P[1][8]*SF[6] + P[2][8]*SF[9] + P[10][8]*SF[15] - P[11][8]*SF[14] - (P[12][8]*q0)/2 + dt*(P[3][5] + P[0][5]*SF[7] + P[1][5]*SF[6] + P[2][5]*SF[9] + P[10][5]*SF[15] - P[11][5]*SF[14] - (P[12][5]*q0)/2);
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nextP[4][8] = P[4][8] + P[0][8]*SF[5] + P[1][8]*SF[3] - P[3][8]*SF[4] + P[2][8]*SPP[0] + P[13][8]*SPP[3] + P[14][8]*SPP[6] - P[15][8]*SPP[9] + dt*(P[4][5] + P[0][5]*SF[5] + P[1][5]*SF[3] - P[3][5]*SF[4] + P[2][5]*SPP[0] + P[13][5]*SPP[3] + P[14][5]*SPP[6] - P[15][5]*SPP[9]);
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nextP[5][8] = P[5][8] + P[0][8]*SF[4] + P[2][8]*SF[3] + P[3][8]*SF[5] - P[1][8]*SPP[0] - P[13][8]*SPP[8] + P[14][8]*SPP[2] + P[15][8]*SPP[5] + dt*(P[5][5] + P[0][5]*SF[4] + P[2][5]*SF[3] + P[3][5]*SF[5] - P[1][5]*SPP[0] - P[13][5]*SPP[8] + P[14][5]*SPP[2] + P[15][5]*SPP[5]);
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nextP[6][8] = P[6][8] + P[1][8]*SF[4] - P[2][8]*SF[5] + P[3][8]*SF[3] + P[0][8]*SPP[0] + P[13][8]*SPP[4] - P[14][8]*SPP[7] - P[15][8]*SPP[1] + dt*(P[6][5] + P[1][5]*SF[4] - P[2][5]*SF[5] + P[3][5]*SF[3] + P[0][5]*SPP[0] + P[13][5]*SPP[4] - P[14][5]*SPP[7] - P[15][5]*SPP[1]);
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nextP[7][8] = P[7][8] + P[4][8]*dt + dt*(P[7][5] + P[4][5]*dt);
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nextP[8][8] = P[8][8] + P[5][8]*dt + dt*(P[8][5] + P[5][5]*dt);
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nextP[0][9] = P[0][9] + P[1][9]*SF[9] + P[2][9]*SF[11] + P[3][9]*SF[10] + P[10][9]*SF[14] + P[11][9]*SF[15] + P[12][9]*SPP[10] + dt*(P[0][6] + P[1][6]*SF[9] + P[2][6]*SF[11] + P[3][6]*SF[10] + P[10][6]*SF[14] + P[11][6]*SF[15] + P[12][6]*SPP[10]);
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nextP[1][9] = P[1][9] + P[0][9]*SF[8] + P[2][9]*SF[7] + P[3][9]*SF[11] - P[12][9]*SF[15] + P[11][9]*SPP[10] - (P[10][9]*q0)/2 + dt*(P[1][6] + P[0][6]*SF[8] + P[2][6]*SF[7] + P[3][6]*SF[11] - P[12][6]*SF[15] + P[11][6]*SPP[10] - (P[10][6]*q0)/2);
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nextP[2][9] = P[2][9] + P[0][9]*SF[6] + P[1][9]*SF[10] + P[3][9]*SF[8] + P[12][9]*SF[14] - P[10][9]*SPP[10] - (P[11][9]*q0)/2 + dt*(P[2][6] + P[0][6]*SF[6] + P[1][6]*SF[10] + P[3][6]*SF[8] + P[12][6]*SF[14] - P[10][6]*SPP[10] - (P[11][6]*q0)/2);
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nextP[3][9] = P[3][9] + P[0][9]*SF[7] + P[1][9]*SF[6] + P[2][9]*SF[9] + P[10][9]*SF[15] - P[11][9]*SF[14] - (P[12][9]*q0)/2 + dt*(P[3][6] + P[0][6]*SF[7] + P[1][6]*SF[6] + P[2][6]*SF[9] + P[10][6]*SF[15] - P[11][6]*SF[14] - (P[12][6]*q0)/2);
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nextP[4][9] = P[4][9] + P[0][9]*SF[5] + P[1][9]*SF[3] - P[3][9]*SF[4] + P[2][9]*SPP[0] + P[13][9]*SPP[3] + P[14][9]*SPP[6] - P[15][9]*SPP[9] + dt*(P[4][6] + P[0][6]*SF[5] + P[1][6]*SF[3] - P[3][6]*SF[4] + P[2][6]*SPP[0] + P[13][6]*SPP[3] + P[14][6]*SPP[6] - P[15][6]*SPP[9]);
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nextP[5][9] = P[5][9] + P[0][9]*SF[4] + P[2][9]*SF[3] + P[3][9]*SF[5] - P[1][9]*SPP[0] - P[13][9]*SPP[8] + P[14][9]*SPP[2] + P[15][9]*SPP[5] + dt*(P[5][6] + P[0][6]*SF[4] + P[2][6]*SF[3] + P[3][6]*SF[5] - P[1][6]*SPP[0] - P[13][6]*SPP[8] + P[14][6]*SPP[2] + P[15][6]*SPP[5]);
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nextP[6][9] = P[6][9] + P[1][9]*SF[4] - P[2][9]*SF[5] + P[3][9]*SF[3] + P[0][9]*SPP[0] + P[13][9]*SPP[4] - P[14][9]*SPP[7] - P[15][9]*SPP[1] + dt*(P[6][6] + P[1][6]*SF[4] - P[2][6]*SF[5] + P[3][6]*SF[3] + P[0][6]*SPP[0] + P[13][6]*SPP[4] - P[14][6]*SPP[7] - P[15][6]*SPP[1]);
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nextP[7][9] = P[7][9] + P[4][9]*dt + dt*(P[7][6] + P[4][6]*dt);
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nextP[8][9] = P[8][9] + P[5][9]*dt + dt*(P[8][6] + P[5][6]*dt);
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nextP[9][9] = P[9][9] + P[6][9]*dt + dt*(P[9][6] + P[6][6]*dt);
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if (stateIndexLim > 9) {
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nextP[0][10] = P[0][10] + P[1][10]*SF[9] + P[2][10]*SF[11] + P[3][10]*SF[10] + P[10][10]*SF[14] + P[11][10]*SF[15] + P[12][10]*SPP[10];
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nextP[1][10] = P[1][10] + P[0][10]*SF[8] + P[2][10]*SF[7] + P[3][10]*SF[11] - P[12][10]*SF[15] + P[11][10]*SPP[10] - (P[10][10]*q0)/2;
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nextP[2][10] = P[2][10] + P[0][10]*SF[6] + P[1][10]*SF[10] + P[3][10]*SF[8] + P[12][10]*SF[14] - P[10][10]*SPP[10] - (P[11][10]*q0)/2;
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nextP[3][10] = P[3][10] + P[0][10]*SF[7] + P[1][10]*SF[6] + P[2][10]*SF[9] + P[10][10]*SF[15] - P[11][10]*SF[14] - (P[12][10]*q0)/2;
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nextP[4][10] = P[4][10] + P[0][10]*SF[5] + P[1][10]*SF[3] - P[3][10]*SF[4] + P[2][10]*SPP[0] + P[13][10]*SPP[3] + P[14][10]*SPP[6] - P[15][10]*SPP[9];
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nextP[5][10] = P[5][10] + P[0][10]*SF[4] + P[2][10]*SF[3] + P[3][10]*SF[5] - P[1][10]*SPP[0] - P[13][10]*SPP[8] + P[14][10]*SPP[2] + P[15][10]*SPP[5];
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nextP[6][10] = P[6][10] + P[1][10]*SF[4] - P[2][10]*SF[5] + P[3][10]*SF[3] + P[0][10]*SPP[0] + P[13][10]*SPP[4] - P[14][10]*SPP[7] - P[15][10]*SPP[1];
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nextP[7][10] = P[7][10] + P[4][10]*dt;
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nextP[8][10] = P[8][10] + P[5][10]*dt;
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nextP[9][10] = P[9][10] + P[6][10]*dt;
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nextP[10][10] = P[10][10];
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nextP[0][11] = P[0][11] + P[1][11]*SF[9] + P[2][11]*SF[11] + P[3][11]*SF[10] + P[10][11]*SF[14] + P[11][11]*SF[15] + P[12][11]*SPP[10];
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nextP[1][11] = P[1][11] + P[0][11]*SF[8] + P[2][11]*SF[7] + P[3][11]*SF[11] - P[12][11]*SF[15] + P[11][11]*SPP[10] - (P[10][11]*q0)/2;
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nextP[2][11] = P[2][11] + P[0][11]*SF[6] + P[1][11]*SF[10] + P[3][11]*SF[8] + P[12][11]*SF[14] - P[10][11]*SPP[10] - (P[11][11]*q0)/2;
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nextP[3][11] = P[3][11] + P[0][11]*SF[7] + P[1][11]*SF[6] + P[2][11]*SF[9] + P[10][11]*SF[15] - P[11][11]*SF[14] - (P[12][11]*q0)/2;
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nextP[4][11] = P[4][11] + P[0][11]*SF[5] + P[1][11]*SF[3] - P[3][11]*SF[4] + P[2][11]*SPP[0] + P[13][11]*SPP[3] + P[14][11]*SPP[6] - P[15][11]*SPP[9];
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nextP[5][11] = P[5][11] + P[0][11]*SF[4] + P[2][11]*SF[3] + P[3][11]*SF[5] - P[1][11]*SPP[0] - P[13][11]*SPP[8] + P[14][11]*SPP[2] + P[15][11]*SPP[5];
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nextP[6][11] = P[6][11] + P[1][11]*SF[4] - P[2][11]*SF[5] + P[3][11]*SF[3] + P[0][11]*SPP[0] + P[13][11]*SPP[4] - P[14][11]*SPP[7] - P[15][11]*SPP[1];
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nextP[7][11] = P[7][11] + P[4][11]*dt;
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nextP[8][11] = P[8][11] + P[5][11]*dt;
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nextP[9][11] = P[9][11] + P[6][11]*dt;
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nextP[10][11] = P[10][11];
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nextP[11][11] = P[11][11];
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nextP[0][12] = P[0][12] + P[1][12]*SF[9] + P[2][12]*SF[11] + P[3][12]*SF[10] + P[10][12]*SF[14] + P[11][12]*SF[15] + P[12][12]*SPP[10];
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nextP[1][12] = P[1][12] + P[0][12]*SF[8] + P[2][12]*SF[7] + P[3][12]*SF[11] - P[12][12]*SF[15] + P[11][12]*SPP[10] - (P[10][12]*q0)/2;
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nextP[2][12] = P[2][12] + P[0][12]*SF[6] + P[1][12]*SF[10] + P[3][12]*SF[8] + P[12][12]*SF[14] - P[10][12]*SPP[10] - (P[11][12]*q0)/2;
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nextP[3][12] = P[3][12] + P[0][12]*SF[7] + P[1][12]*SF[6] + P[2][12]*SF[9] + P[10][12]*SF[15] - P[11][12]*SF[14] - (P[12][12]*q0)/2;
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nextP[4][12] = P[4][12] + P[0][12]*SF[5] + P[1][12]*SF[3] - P[3][12]*SF[4] + P[2][12]*SPP[0] + P[13][12]*SPP[3] + P[14][12]*SPP[6] - P[15][12]*SPP[9];
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nextP[5][12] = P[5][12] + P[0][12]*SF[4] + P[2][12]*SF[3] + P[3][12]*SF[5] - P[1][12]*SPP[0] - P[13][12]*SPP[8] + P[14][12]*SPP[2] + P[15][12]*SPP[5];
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nextP[6][12] = P[6][12] + P[1][12]*SF[4] - P[2][12]*SF[5] + P[3][12]*SF[3] + P[0][12]*SPP[0] + P[13][12]*SPP[4] - P[14][12]*SPP[7] - P[15][12]*SPP[1];
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nextP[7][12] = P[7][12] + P[4][12]*dt;
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nextP[8][12] = P[8][12] + P[5][12]*dt;
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nextP[9][12] = P[9][12] + P[6][12]*dt;
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nextP[10][12] = P[10][12];
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nextP[11][12] = P[11][12];
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nextP[12][12] = P[12][12];
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if (stateIndexLim > 12) {
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nextP[0][13] = P[0][13] + P[1][13]*SF[9] + P[2][13]*SF[11] + P[3][13]*SF[10] + P[10][13]*SF[14] + P[11][13]*SF[15] + P[12][13]*SPP[10];
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nextP[1][13] = P[1][13] + P[0][13]*SF[8] + P[2][13]*SF[7] + P[3][13]*SF[11] - P[12][13]*SF[15] + P[11][13]*SPP[10] - (P[10][13]*q0)/2;
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nextP[2][13] = P[2][13] + P[0][13]*SF[6] + P[1][13]*SF[10] + P[3][13]*SF[8] + P[12][13]*SF[14] - P[10][13]*SPP[10] - (P[11][13]*q0)/2;
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nextP[3][13] = P[3][13] + P[0][13]*SF[7] + P[1][13]*SF[6] + P[2][13]*SF[9] + P[10][13]*SF[15] - P[11][13]*SF[14] - (P[12][13]*q0)/2;
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nextP[4][13] = P[4][13] + P[0][13]*SF[5] + P[1][13]*SF[3] - P[3][13]*SF[4] + P[2][13]*SPP[0] + P[13][13]*SPP[3] + P[14][13]*SPP[6] - P[15][13]*SPP[9];
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nextP[5][13] = P[5][13] + P[0][13]*SF[4] + P[2][13]*SF[3] + P[3][13]*SF[5] - P[1][13]*SPP[0] - P[13][13]*SPP[8] + P[14][13]*SPP[2] + P[15][13]*SPP[5];
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nextP[6][13] = P[6][13] + P[1][13]*SF[4] - P[2][13]*SF[5] + P[3][13]*SF[3] + P[0][13]*SPP[0] + P[13][13]*SPP[4] - P[14][13]*SPP[7] - P[15][13]*SPP[1];
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nextP[7][13] = P[7][13] + P[4][13]*dt;
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|
nextP[8][13] = P[8][13] + P[5][13]*dt;
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|
nextP[9][13] = P[9][13] + P[6][13]*dt;
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|
nextP[10][13] = P[10][13];
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|
nextP[11][13] = P[11][13];
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nextP[12][13] = P[12][13];
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nextP[13][13] = P[13][13];
|
|
nextP[0][14] = P[0][14] + P[1][14]*SF[9] + P[2][14]*SF[11] + P[3][14]*SF[10] + P[10][14]*SF[14] + P[11][14]*SF[15] + P[12][14]*SPP[10];
|
|
nextP[1][14] = P[1][14] + P[0][14]*SF[8] + P[2][14]*SF[7] + P[3][14]*SF[11] - P[12][14]*SF[15] + P[11][14]*SPP[10] - (P[10][14]*q0)/2;
|
|
nextP[2][14] = P[2][14] + P[0][14]*SF[6] + P[1][14]*SF[10] + P[3][14]*SF[8] + P[12][14]*SF[14] - P[10][14]*SPP[10] - (P[11][14]*q0)/2;
|
|
nextP[3][14] = P[3][14] + P[0][14]*SF[7] + P[1][14]*SF[6] + P[2][14]*SF[9] + P[10][14]*SF[15] - P[11][14]*SF[14] - (P[12][14]*q0)/2;
|
|
nextP[4][14] = P[4][14] + P[0][14]*SF[5] + P[1][14]*SF[3] - P[3][14]*SF[4] + P[2][14]*SPP[0] + P[13][14]*SPP[3] + P[14][14]*SPP[6] - P[15][14]*SPP[9];
|
|
nextP[5][14] = P[5][14] + P[0][14]*SF[4] + P[2][14]*SF[3] + P[3][14]*SF[5] - P[1][14]*SPP[0] - P[13][14]*SPP[8] + P[14][14]*SPP[2] + P[15][14]*SPP[5];
|
|
nextP[6][14] = P[6][14] + P[1][14]*SF[4] - P[2][14]*SF[5] + P[3][14]*SF[3] + P[0][14]*SPP[0] + P[13][14]*SPP[4] - P[14][14]*SPP[7] - P[15][14]*SPP[1];
|
|
nextP[7][14] = P[7][14] + P[4][14]*dt;
|
|
nextP[8][14] = P[8][14] + P[5][14]*dt;
|
|
nextP[9][14] = P[9][14] + P[6][14]*dt;
|
|
nextP[10][14] = P[10][14];
|
|
nextP[11][14] = P[11][14];
|
|
nextP[12][14] = P[12][14];
|
|
nextP[13][14] = P[13][14];
|
|
nextP[14][14] = P[14][14];
|
|
nextP[0][15] = P[0][15] + P[1][15]*SF[9] + P[2][15]*SF[11] + P[3][15]*SF[10] + P[10][15]*SF[14] + P[11][15]*SF[15] + P[12][15]*SPP[10];
|
|
nextP[1][15] = P[1][15] + P[0][15]*SF[8] + P[2][15]*SF[7] + P[3][15]*SF[11] - P[12][15]*SF[15] + P[11][15]*SPP[10] - (P[10][15]*q0)/2;
|
|
nextP[2][15] = P[2][15] + P[0][15]*SF[6] + P[1][15]*SF[10] + P[3][15]*SF[8] + P[12][15]*SF[14] - P[10][15]*SPP[10] - (P[11][15]*q0)/2;
|
|
nextP[3][15] = P[3][15] + P[0][15]*SF[7] + P[1][15]*SF[6] + P[2][15]*SF[9] + P[10][15]*SF[15] - P[11][15]*SF[14] - (P[12][15]*q0)/2;
|
|
nextP[4][15] = P[4][15] + P[0][15]*SF[5] + P[1][15]*SF[3] - P[3][15]*SF[4] + P[2][15]*SPP[0] + P[13][15]*SPP[3] + P[14][15]*SPP[6] - P[15][15]*SPP[9];
|
|
nextP[5][15] = P[5][15] + P[0][15]*SF[4] + P[2][15]*SF[3] + P[3][15]*SF[5] - P[1][15]*SPP[0] - P[13][15]*SPP[8] + P[14][15]*SPP[2] + P[15][15]*SPP[5];
|
|
nextP[6][15] = P[6][15] + P[1][15]*SF[4] - P[2][15]*SF[5] + P[3][15]*SF[3] + P[0][15]*SPP[0] + P[13][15]*SPP[4] - P[14][15]*SPP[7] - P[15][15]*SPP[1];
|
|
nextP[7][15] = P[7][15] + P[4][15]*dt;
|
|
nextP[8][15] = P[8][15] + P[5][15]*dt;
|
|
nextP[9][15] = P[9][15] + P[6][15]*dt;
|
|
nextP[10][15] = P[10][15];
|
|
nextP[11][15] = P[11][15];
|
|
nextP[12][15] = P[12][15];
|
|
nextP[13][15] = P[13][15];
|
|
nextP[14][15] = P[14][15];
|
|
nextP[15][15] = P[15][15];
|
|
|
|
if (stateIndexLim > 15) {
|
|
nextP[0][16] = P[0][16] + P[1][16]*SF[9] + P[2][16]*SF[11] + P[3][16]*SF[10] + P[10][16]*SF[14] + P[11][16]*SF[15] + P[12][16]*SPP[10];
|
|
nextP[1][16] = P[1][16] + P[0][16]*SF[8] + P[2][16]*SF[7] + P[3][16]*SF[11] - P[12][16]*SF[15] + P[11][16]*SPP[10] - (P[10][16]*q0)/2;
|
|
nextP[2][16] = P[2][16] + P[0][16]*SF[6] + P[1][16]*SF[10] + P[3][16]*SF[8] + P[12][16]*SF[14] - P[10][16]*SPP[10] - (P[11][16]*q0)/2;
|
|
nextP[3][16] = P[3][16] + P[0][16]*SF[7] + P[1][16]*SF[6] + P[2][16]*SF[9] + P[10][16]*SF[15] - P[11][16]*SF[14] - (P[12][16]*q0)/2;
|
|
nextP[4][16] = P[4][16] + P[0][16]*SF[5] + P[1][16]*SF[3] - P[3][16]*SF[4] + P[2][16]*SPP[0] + P[13][16]*SPP[3] + P[14][16]*SPP[6] - P[15][16]*SPP[9];
|
|
nextP[5][16] = P[5][16] + P[0][16]*SF[4] + P[2][16]*SF[3] + P[3][16]*SF[5] - P[1][16]*SPP[0] - P[13][16]*SPP[8] + P[14][16]*SPP[2] + P[15][16]*SPP[5];
|
|
nextP[6][16] = P[6][16] + P[1][16]*SF[4] - P[2][16]*SF[5] + P[3][16]*SF[3] + P[0][16]*SPP[0] + P[13][16]*SPP[4] - P[14][16]*SPP[7] - P[15][16]*SPP[1];
|
|
nextP[7][16] = P[7][16] + P[4][16]*dt;
|
|
nextP[8][16] = P[8][16] + P[5][16]*dt;
|
|
nextP[9][16] = P[9][16] + P[6][16]*dt;
|
|
nextP[10][16] = P[10][16];
|
|
nextP[11][16] = P[11][16];
|
|
nextP[12][16] = P[12][16];
|
|
nextP[13][16] = P[13][16];
|
|
nextP[14][16] = P[14][16];
|
|
nextP[15][16] = P[15][16];
|
|
nextP[16][16] = P[16][16];
|
|
nextP[0][17] = P[0][17] + P[1][17]*SF[9] + P[2][17]*SF[11] + P[3][17]*SF[10] + P[10][17]*SF[14] + P[11][17]*SF[15] + P[12][17]*SPP[10];
|
|
nextP[1][17] = P[1][17] + P[0][17]*SF[8] + P[2][17]*SF[7] + P[3][17]*SF[11] - P[12][17]*SF[15] + P[11][17]*SPP[10] - (P[10][17]*q0)/2;
|
|
nextP[2][17] = P[2][17] + P[0][17]*SF[6] + P[1][17]*SF[10] + P[3][17]*SF[8] + P[12][17]*SF[14] - P[10][17]*SPP[10] - (P[11][17]*q0)/2;
|
|
nextP[3][17] = P[3][17] + P[0][17]*SF[7] + P[1][17]*SF[6] + P[2][17]*SF[9] + P[10][17]*SF[15] - P[11][17]*SF[14] - (P[12][17]*q0)/2;
|
|
nextP[4][17] = P[4][17] + P[0][17]*SF[5] + P[1][17]*SF[3] - P[3][17]*SF[4] + P[2][17]*SPP[0] + P[13][17]*SPP[3] + P[14][17]*SPP[6] - P[15][17]*SPP[9];
|
|
nextP[5][17] = P[5][17] + P[0][17]*SF[4] + P[2][17]*SF[3] + P[3][17]*SF[5] - P[1][17]*SPP[0] - P[13][17]*SPP[8] + P[14][17]*SPP[2] + P[15][17]*SPP[5];
|
|
nextP[6][17] = P[6][17] + P[1][17]*SF[4] - P[2][17]*SF[5] + P[3][17]*SF[3] + P[0][17]*SPP[0] + P[13][17]*SPP[4] - P[14][17]*SPP[7] - P[15][17]*SPP[1];
|
|
nextP[7][17] = P[7][17] + P[4][17]*dt;
|
|
nextP[8][17] = P[8][17] + P[5][17]*dt;
|
|
nextP[9][17] = P[9][17] + P[6][17]*dt;
|
|
nextP[10][17] = P[10][17];
|
|
nextP[11][17] = P[11][17];
|
|
nextP[12][17] = P[12][17];
|
|
nextP[13][17] = P[13][17];
|
|
nextP[14][17] = P[14][17];
|
|
nextP[15][17] = P[15][17];
|
|
nextP[16][17] = P[16][17];
|
|
nextP[17][17] = P[17][17];
|
|
nextP[0][18] = P[0][18] + P[1][18]*SF[9] + P[2][18]*SF[11] + P[3][18]*SF[10] + P[10][18]*SF[14] + P[11][18]*SF[15] + P[12][18]*SPP[10];
|
|
nextP[1][18] = P[1][18] + P[0][18]*SF[8] + P[2][18]*SF[7] + P[3][18]*SF[11] - P[12][18]*SF[15] + P[11][18]*SPP[10] - (P[10][18]*q0)/2;
|
|
nextP[2][18] = P[2][18] + P[0][18]*SF[6] + P[1][18]*SF[10] + P[3][18]*SF[8] + P[12][18]*SF[14] - P[10][18]*SPP[10] - (P[11][18]*q0)/2;
|
|
nextP[3][18] = P[3][18] + P[0][18]*SF[7] + P[1][18]*SF[6] + P[2][18]*SF[9] + P[10][18]*SF[15] - P[11][18]*SF[14] - (P[12][18]*q0)/2;
|
|
nextP[4][18] = P[4][18] + P[0][18]*SF[5] + P[1][18]*SF[3] - P[3][18]*SF[4] + P[2][18]*SPP[0] + P[13][18]*SPP[3] + P[14][18]*SPP[6] - P[15][18]*SPP[9];
|
|
nextP[5][18] = P[5][18] + P[0][18]*SF[4] + P[2][18]*SF[3] + P[3][18]*SF[5] - P[1][18]*SPP[0] - P[13][18]*SPP[8] + P[14][18]*SPP[2] + P[15][18]*SPP[5];
|
|
nextP[6][18] = P[6][18] + P[1][18]*SF[4] - P[2][18]*SF[5] + P[3][18]*SF[3] + P[0][18]*SPP[0] + P[13][18]*SPP[4] - P[14][18]*SPP[7] - P[15][18]*SPP[1];
|
|
nextP[7][18] = P[7][18] + P[4][18]*dt;
|
|
nextP[8][18] = P[8][18] + P[5][18]*dt;
|
|
nextP[9][18] = P[9][18] + P[6][18]*dt;
|
|
nextP[10][18] = P[10][18];
|
|
nextP[11][18] = P[11][18];
|
|
nextP[12][18] = P[12][18];
|
|
nextP[13][18] = P[13][18];
|
|
nextP[14][18] = P[14][18];
|
|
nextP[15][18] = P[15][18];
|
|
nextP[16][18] = P[16][18];
|
|
nextP[17][18] = P[17][18];
|
|
nextP[18][18] = P[18][18];
|
|
nextP[0][19] = P[0][19] + P[1][19]*SF[9] + P[2][19]*SF[11] + P[3][19]*SF[10] + P[10][19]*SF[14] + P[11][19]*SF[15] + P[12][19]*SPP[10];
|
|
nextP[1][19] = P[1][19] + P[0][19]*SF[8] + P[2][19]*SF[7] + P[3][19]*SF[11] - P[12][19]*SF[15] + P[11][19]*SPP[10] - (P[10][19]*q0)/2;
|
|
nextP[2][19] = P[2][19] + P[0][19]*SF[6] + P[1][19]*SF[10] + P[3][19]*SF[8] + P[12][19]*SF[14] - P[10][19]*SPP[10] - (P[11][19]*q0)/2;
|
|
nextP[3][19] = P[3][19] + P[0][19]*SF[7] + P[1][19]*SF[6] + P[2][19]*SF[9] + P[10][19]*SF[15] - P[11][19]*SF[14] - (P[12][19]*q0)/2;
|
|
nextP[4][19] = P[4][19] + P[0][19]*SF[5] + P[1][19]*SF[3] - P[3][19]*SF[4] + P[2][19]*SPP[0] + P[13][19]*SPP[3] + P[14][19]*SPP[6] - P[15][19]*SPP[9];
|
|
nextP[5][19] = P[5][19] + P[0][19]*SF[4] + P[2][19]*SF[3] + P[3][19]*SF[5] - P[1][19]*SPP[0] - P[13][19]*SPP[8] + P[14][19]*SPP[2] + P[15][19]*SPP[5];
|
|
nextP[6][19] = P[6][19] + P[1][19]*SF[4] - P[2][19]*SF[5] + P[3][19]*SF[3] + P[0][19]*SPP[0] + P[13][19]*SPP[4] - P[14][19]*SPP[7] - P[15][19]*SPP[1];
|
|
nextP[7][19] = P[7][19] + P[4][19]*dt;
|
|
nextP[8][19] = P[8][19] + P[5][19]*dt;
|
|
nextP[9][19] = P[9][19] + P[6][19]*dt;
|
|
nextP[10][19] = P[10][19];
|
|
nextP[11][19] = P[11][19];
|
|
nextP[12][19] = P[12][19];
|
|
nextP[13][19] = P[13][19];
|
|
nextP[14][19] = P[14][19];
|
|
nextP[15][19] = P[15][19];
|
|
nextP[16][19] = P[16][19];
|
|
nextP[17][19] = P[17][19];
|
|
nextP[18][19] = P[18][19];
|
|
nextP[19][19] = P[19][19];
|
|
nextP[0][20] = P[0][20] + P[1][20]*SF[9] + P[2][20]*SF[11] + P[3][20]*SF[10] + P[10][20]*SF[14] + P[11][20]*SF[15] + P[12][20]*SPP[10];
|
|
nextP[1][20] = P[1][20] + P[0][20]*SF[8] + P[2][20]*SF[7] + P[3][20]*SF[11] - P[12][20]*SF[15] + P[11][20]*SPP[10] - (P[10][20]*q0)/2;
|
|
nextP[2][20] = P[2][20] + P[0][20]*SF[6] + P[1][20]*SF[10] + P[3][20]*SF[8] + P[12][20]*SF[14] - P[10][20]*SPP[10] - (P[11][20]*q0)/2;
|
|
nextP[3][20] = P[3][20] + P[0][20]*SF[7] + P[1][20]*SF[6] + P[2][20]*SF[9] + P[10][20]*SF[15] - P[11][20]*SF[14] - (P[12][20]*q0)/2;
|
|
nextP[4][20] = P[4][20] + P[0][20]*SF[5] + P[1][20]*SF[3] - P[3][20]*SF[4] + P[2][20]*SPP[0] + P[13][20]*SPP[3] + P[14][20]*SPP[6] - P[15][20]*SPP[9];
|
|
nextP[5][20] = P[5][20] + P[0][20]*SF[4] + P[2][20]*SF[3] + P[3][20]*SF[5] - P[1][20]*SPP[0] - P[13][20]*SPP[8] + P[14][20]*SPP[2] + P[15][20]*SPP[5];
|
|
nextP[6][20] = P[6][20] + P[1][20]*SF[4] - P[2][20]*SF[5] + P[3][20]*SF[3] + P[0][20]*SPP[0] + P[13][20]*SPP[4] - P[14][20]*SPP[7] - P[15][20]*SPP[1];
|
|
nextP[7][20] = P[7][20] + P[4][20]*dt;
|
|
nextP[8][20] = P[8][20] + P[5][20]*dt;
|
|
nextP[9][20] = P[9][20] + P[6][20]*dt;
|
|
nextP[10][20] = P[10][20];
|
|
nextP[11][20] = P[11][20];
|
|
nextP[12][20] = P[12][20];
|
|
nextP[13][20] = P[13][20];
|
|
nextP[14][20] = P[14][20];
|
|
nextP[15][20] = P[15][20];
|
|
nextP[16][20] = P[16][20];
|
|
nextP[17][20] = P[17][20];
|
|
nextP[18][20] = P[18][20];
|
|
nextP[19][20] = P[19][20];
|
|
nextP[20][20] = P[20][20];
|
|
nextP[0][21] = P[0][21] + P[1][21]*SF[9] + P[2][21]*SF[11] + P[3][21]*SF[10] + P[10][21]*SF[14] + P[11][21]*SF[15] + P[12][21]*SPP[10];
|
|
nextP[1][21] = P[1][21] + P[0][21]*SF[8] + P[2][21]*SF[7] + P[3][21]*SF[11] - P[12][21]*SF[15] + P[11][21]*SPP[10] - (P[10][21]*q0)/2;
|
|
nextP[2][21] = P[2][21] + P[0][21]*SF[6] + P[1][21]*SF[10] + P[3][21]*SF[8] + P[12][21]*SF[14] - P[10][21]*SPP[10] - (P[11][21]*q0)/2;
|
|
nextP[3][21] = P[3][21] + P[0][21]*SF[7] + P[1][21]*SF[6] + P[2][21]*SF[9] + P[10][21]*SF[15] - P[11][21]*SF[14] - (P[12][21]*q0)/2;
|
|
nextP[4][21] = P[4][21] + P[0][21]*SF[5] + P[1][21]*SF[3] - P[3][21]*SF[4] + P[2][21]*SPP[0] + P[13][21]*SPP[3] + P[14][21]*SPP[6] - P[15][21]*SPP[9];
|
|
nextP[5][21] = P[5][21] + P[0][21]*SF[4] + P[2][21]*SF[3] + P[3][21]*SF[5] - P[1][21]*SPP[0] - P[13][21]*SPP[8] + P[14][21]*SPP[2] + P[15][21]*SPP[5];
|
|
nextP[6][21] = P[6][21] + P[1][21]*SF[4] - P[2][21]*SF[5] + P[3][21]*SF[3] + P[0][21]*SPP[0] + P[13][21]*SPP[4] - P[14][21]*SPP[7] - P[15][21]*SPP[1];
|
|
nextP[7][21] = P[7][21] + P[4][21]*dt;
|
|
nextP[8][21] = P[8][21] + P[5][21]*dt;
|
|
nextP[9][21] = P[9][21] + P[6][21]*dt;
|
|
nextP[10][21] = P[10][21];
|
|
nextP[11][21] = P[11][21];
|
|
nextP[12][21] = P[12][21];
|
|
nextP[13][21] = P[13][21];
|
|
nextP[14][21] = P[14][21];
|
|
nextP[15][21] = P[15][21];
|
|
nextP[16][21] = P[16][21];
|
|
nextP[17][21] = P[17][21];
|
|
nextP[18][21] = P[18][21];
|
|
nextP[19][21] = P[19][21];
|
|
nextP[20][21] = P[20][21];
|
|
nextP[21][21] = P[21][21];
|
|
|
|
if (stateIndexLim > 21) {
|
|
nextP[0][22] = P[0][22] + P[1][22]*SF[9] + P[2][22]*SF[11] + P[3][22]*SF[10] + P[10][22]*SF[14] + P[11][22]*SF[15] + P[12][22]*SPP[10];
|
|
nextP[1][22] = P[1][22] + P[0][22]*SF[8] + P[2][22]*SF[7] + P[3][22]*SF[11] - P[12][22]*SF[15] + P[11][22]*SPP[10] - (P[10][22]*q0)/2;
|
|
nextP[2][22] = P[2][22] + P[0][22]*SF[6] + P[1][22]*SF[10] + P[3][22]*SF[8] + P[12][22]*SF[14] - P[10][22]*SPP[10] - (P[11][22]*q0)/2;
|
|
nextP[3][22] = P[3][22] + P[0][22]*SF[7] + P[1][22]*SF[6] + P[2][22]*SF[9] + P[10][22]*SF[15] - P[11][22]*SF[14] - (P[12][22]*q0)/2;
|
|
nextP[4][22] = P[4][22] + P[0][22]*SF[5] + P[1][22]*SF[3] - P[3][22]*SF[4] + P[2][22]*SPP[0] + P[13][22]*SPP[3] + P[14][22]*SPP[6] - P[15][22]*SPP[9];
|
|
nextP[5][22] = P[5][22] + P[0][22]*SF[4] + P[2][22]*SF[3] + P[3][22]*SF[5] - P[1][22]*SPP[0] - P[13][22]*SPP[8] + P[14][22]*SPP[2] + P[15][22]*SPP[5];
|
|
nextP[6][22] = P[6][22] + P[1][22]*SF[4] - P[2][22]*SF[5] + P[3][22]*SF[3] + P[0][22]*SPP[0] + P[13][22]*SPP[4] - P[14][22]*SPP[7] - P[15][22]*SPP[1];
|
|
nextP[7][22] = P[7][22] + P[4][22]*dt;
|
|
nextP[8][22] = P[8][22] + P[5][22]*dt;
|
|
nextP[9][22] = P[9][22] + P[6][22]*dt;
|
|
nextP[10][22] = P[10][22];
|
|
nextP[11][22] = P[11][22];
|
|
nextP[12][22] = P[12][22];
|
|
nextP[13][22] = P[13][22];
|
|
nextP[14][22] = P[14][22];
|
|
nextP[15][22] = P[15][22];
|
|
nextP[16][22] = P[16][22];
|
|
nextP[17][22] = P[17][22];
|
|
nextP[18][22] = P[18][22];
|
|
nextP[19][22] = P[19][22];
|
|
nextP[20][22] = P[20][22];
|
|
nextP[21][22] = P[21][22];
|
|
nextP[22][22] = P[22][22];
|
|
nextP[0][23] = P[0][23] + P[1][23]*SF[9] + P[2][23]*SF[11] + P[3][23]*SF[10] + P[10][23]*SF[14] + P[11][23]*SF[15] + P[12][23]*SPP[10];
|
|
nextP[1][23] = P[1][23] + P[0][23]*SF[8] + P[2][23]*SF[7] + P[3][23]*SF[11] - P[12][23]*SF[15] + P[11][23]*SPP[10] - (P[10][23]*q0)/2;
|
|
nextP[2][23] = P[2][23] + P[0][23]*SF[6] + P[1][23]*SF[10] + P[3][23]*SF[8] + P[12][23]*SF[14] - P[10][23]*SPP[10] - (P[11][23]*q0)/2;
|
|
nextP[3][23] = P[3][23] + P[0][23]*SF[7] + P[1][23]*SF[6] + P[2][23]*SF[9] + P[10][23]*SF[15] - P[11][23]*SF[14] - (P[12][23]*q0)/2;
|
|
nextP[4][23] = P[4][23] + P[0][23]*SF[5] + P[1][23]*SF[3] - P[3][23]*SF[4] + P[2][23]*SPP[0] + P[13][23]*SPP[3] + P[14][23]*SPP[6] - P[15][23]*SPP[9];
|
|
nextP[5][23] = P[5][23] + P[0][23]*SF[4] + P[2][23]*SF[3] + P[3][23]*SF[5] - P[1][23]*SPP[0] - P[13][23]*SPP[8] + P[14][23]*SPP[2] + P[15][23]*SPP[5];
|
|
nextP[6][23] = P[6][23] + P[1][23]*SF[4] - P[2][23]*SF[5] + P[3][23]*SF[3] + P[0][23]*SPP[0] + P[13][23]*SPP[4] - P[14][23]*SPP[7] - P[15][23]*SPP[1];
|
|
nextP[7][23] = P[7][23] + P[4][23]*dt;
|
|
nextP[8][23] = P[8][23] + P[5][23]*dt;
|
|
nextP[9][23] = P[9][23] + P[6][23]*dt;
|
|
nextP[10][23] = P[10][23];
|
|
nextP[11][23] = P[11][23];
|
|
nextP[12][23] = P[12][23];
|
|
nextP[13][23] = P[13][23];
|
|
nextP[14][23] = P[14][23];
|
|
nextP[15][23] = P[15][23];
|
|
nextP[16][23] = P[16][23];
|
|
nextP[17][23] = P[17][23];
|
|
nextP[18][23] = P[18][23];
|
|
nextP[19][23] = P[19][23];
|
|
nextP[20][23] = P[20][23];
|
|
nextP[21][23] = P[21][23];
|
|
nextP[22][23] = P[22][23];
|
|
nextP[23][23] = P[23][23];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// add the general state process noise variances
|
|
if (stateIndexLim > 9) {
|
|
for (uint8_t i=10; i<=stateIndexLim; i++) {
|
|
nextP[i][i] = nextP[i][i] + processNoiseVariance[i-10];
|
|
}
|
|
}
|
|
|
|
// if the total position variance exceeds 1e4 (100m), then stop covariance
|
|
// growth by setting the predicted to the previous values
|
|
// This prevent an ill conditioned matrix from occurring for long periods
|
|
// without GPS
|
|
if ((P[7][7] + P[8][8]) > 1e4f) {
|
|
for (uint8_t i=7; i<=8; i++)
|
|
{
|
|
for (uint8_t j=0; j<=stateIndexLim; j++)
|
|
{
|
|
nextP[i][j] = P[i][j];
|
|
nextP[j][i] = P[j][i];
|
|
}
|
|
}
|
|
}
|
|
|
|
// covariance matrix is symmetrical, so copy diagonals and copy lower half in nextP
|
|
// to lower and upper half in P
|
|
for (uint8_t row = 0; row <= stateIndexLim; row++) {
|
|
// copy diagonals
|
|
P[row][row] = nextP[row][row];
|
|
// copy off diagonals
|
|
for (uint8_t column = 0 ; column < row; column++) {
|
|
P[row][column] = P[column][row] = nextP[column][row];
|
|
}
|
|
}
|
|
|
|
// constrain values to prevent ill-conditioning
|
|
ConstrainVariances();
|
|
|
|
hal.util->perf_end(_perf_CovariancePrediction);
|
|
}
|
|
|
|
// zero specified range of rows in the state covariance matrix
|
|
void NavEKF3_core::zeroRows(Matrix24 &covMat, uint8_t first, uint8_t last)
|
|
{
|
|
uint8_t row;
|
|
for (row=first; row<=last; row++)
|
|
{
|
|
memset(&covMat[row][0], 0, sizeof(covMat[0][0])*24);
|
|
}
|
|
}
|
|
|
|
// zero specified range of columns in the state covariance matrix
|
|
void NavEKF3_core::zeroCols(Matrix24 &covMat, uint8_t first, uint8_t last)
|
|
{
|
|
uint8_t row;
|
|
for (row=0; row<=23; row++)
|
|
{
|
|
memset(&covMat[row][first], 0, sizeof(covMat[0][0])*(1+last-first));
|
|
}
|
|
}
|
|
|
|
// reset the output data to the current EKF state
|
|
void NavEKF3_core::StoreOutputReset()
|
|
{
|
|
outputDataNew.quat = stateStruct.quat;
|
|
outputDataNew.velocity = stateStruct.velocity;
|
|
outputDataNew.position = stateStruct.position;
|
|
// write current measurement to entire table
|
|
for (uint8_t i=0; i<imu_buffer_length; i++) {
|
|
storedOutput[i] = outputDataNew;
|
|
}
|
|
outputDataDelayed = outputDataNew;
|
|
// reset the states for the complementary filter used to provide a vertical position derivative output
|
|
vertCompFiltState.pos = stateStruct.position.z;
|
|
vertCompFiltState.vel = stateStruct.velocity.z;
|
|
}
|
|
|
|
// Reset the stored output quaternion history to current EKF state
|
|
void NavEKF3_core::StoreQuatReset()
|
|
{
|
|
outputDataNew.quat = stateStruct.quat;
|
|
// write current measurement to entire table
|
|
for (uint8_t i=0; i<imu_buffer_length; i++) {
|
|
storedOutput[i].quat = outputDataNew.quat;
|
|
}
|
|
outputDataDelayed.quat = outputDataNew.quat;
|
|
}
|
|
|
|
// Rotate the stored output quaternion history through a quaternion rotation
|
|
void NavEKF3_core::StoreQuatRotate(const Quaternion &deltaQuat)
|
|
{
|
|
outputDataNew.quat = outputDataNew.quat*deltaQuat;
|
|
// write current measurement to entire table
|
|
for (uint8_t i=0; i<imu_buffer_length; i++) {
|
|
storedOutput[i].quat = storedOutput[i].quat*deltaQuat;
|
|
}
|
|
outputDataDelayed.quat = outputDataDelayed.quat*deltaQuat;
|
|
}
|
|
|
|
// calculate nav to body quaternions from body to nav rotation matrix
|
|
void NavEKF3_core::quat2Tbn(Matrix3f &Tbn, const Quaternion &quat) const
|
|
{
|
|
// Calculate the body to nav cosine matrix
|
|
quat.rotation_matrix(Tbn);
|
|
}
|
|
|
|
// force symmetry on the covariance matrix to prevent ill-conditioning
|
|
void NavEKF3_core::ForceSymmetry()
|
|
{
|
|
for (uint8_t i=1; i<=stateIndexLim; i++)
|
|
{
|
|
for (uint8_t j=0; j<=i-1; j++)
|
|
{
|
|
float temp = 0.5f*(P[i][j] + P[j][i]);
|
|
P[i][j] = temp;
|
|
P[j][i] = temp;
|
|
}
|
|
}
|
|
}
|
|
|
|
// constrain variances (diagonal terms) in the state covariance matrix to prevent ill-conditioning
|
|
// if states are inactive, zero the corresponding off-diagonals
|
|
void NavEKF3_core::ConstrainVariances()
|
|
{
|
|
for (uint8_t i=0; i<=3; i++) P[i][i] = constrain_float(P[i][i],0.0f,1.0f); // attitude error
|
|
for (uint8_t i=4; i<=6; i++) P[i][i] = constrain_float(P[i][i],0.0f,1.0e3f); // velocities
|
|
for (uint8_t i=7; i<=8; i++) P[i][i] = constrain_float(P[i][i],0.0f,1.0e6f);
|
|
P[9][9] = constrain_float(P[9][9],0.0f,1.0e6f); // vertical position
|
|
|
|
if (!inhibitDelAngBiasStates) {
|
|
for (uint8_t i=10; i<=12; i++) P[i][i] = constrain_float(P[i][i],0.0f,sq(0.175f * dtEkfAvg));
|
|
} else {
|
|
zeroCols(P,10,12);
|
|
zeroRows(P,10,12);
|
|
}
|
|
|
|
if (!inhibitDelVelBiasStates) {
|
|
// limit delta velocity bias state variance levels and request a reset if below the safe minimum
|
|
bool resetRequired = false;
|
|
for (uint8_t i=13; i<=15; i++) {
|
|
if (P[i][i] > 1E-9f) {
|
|
// variance is above the safe minimum
|
|
P[i][i] = fminf(P[i][i], sq(10.0f * dtEkfAvg));
|
|
} else {
|
|
// Set the variance to the target minimum and request a covariance reset
|
|
P[i][i] = 1E-8f;
|
|
resetRequired = true;
|
|
}
|
|
}
|
|
|
|
// If any one axis is below the safe minimum, all delta velocity covariance terms must be reset to zero
|
|
if (resetRequired) {
|
|
float delVelBiasVar[3];
|
|
// store all delta velocity bias variances
|
|
for (uint8_t i=0; i<=2; i++) {
|
|
delVelBiasVar[i] = P[i+13][i+13];
|
|
}
|
|
// reset all delta velocity bias covariances
|
|
zeroCols(P,13,15);
|
|
// restore all delta velocity bias variances
|
|
for (uint8_t i=0; i<=2; i++) {
|
|
P[i+13][i+13] = delVelBiasVar[i];
|
|
}
|
|
}
|
|
|
|
} else {
|
|
zeroCols(P,13,15);
|
|
zeroRows(P,13,15);
|
|
}
|
|
|
|
if (!inhibitMagStates) {
|
|
for (uint8_t i=16; i<=18; i++) P[i][i] = constrain_float(P[i][i],0.0f,0.01f); // earth magnetic field
|
|
for (uint8_t i=19; i<=21; i++) P[i][i] = constrain_float(P[i][i],0.0f,0.01f); // body magnetic field
|
|
} else {
|
|
zeroCols(P,16,21);
|
|
zeroRows(P,16,21);
|
|
}
|
|
|
|
if (!inhibitWindStates) {
|
|
for (uint8_t i=22; i<=23; i++) P[i][i] = constrain_float(P[i][i],0.0f,1.0e3f);
|
|
} else {
|
|
zeroCols(P,22,23);
|
|
zeroRows(P,22,23);
|
|
}
|
|
}
|
|
|
|
// constrain states using WMM tables and specified limit
|
|
void NavEKF3_core::MagTableConstrain(void)
|
|
{
|
|
// constrain to error from table earth field
|
|
float limit_ga = frontend->_mag_ef_limit * 0.001f;
|
|
stateStruct.earth_magfield.x = constrain_float(stateStruct.earth_magfield.x,
|
|
table_earth_field_ga.x-limit_ga,
|
|
table_earth_field_ga.x+limit_ga);
|
|
stateStruct.earth_magfield.y = constrain_float(stateStruct.earth_magfield.y,
|
|
table_earth_field_ga.y-limit_ga,
|
|
table_earth_field_ga.y+limit_ga);
|
|
stateStruct.earth_magfield.z = constrain_float(stateStruct.earth_magfield.z,
|
|
table_earth_field_ga.z-limit_ga,
|
|
table_earth_field_ga.z+limit_ga);
|
|
}
|
|
|
|
// constrain states to prevent ill-conditioning
|
|
void NavEKF3_core::ConstrainStates()
|
|
{
|
|
// quaternions are limited between +-1
|
|
for (uint8_t i=0; i<=3; i++) statesArray[i] = constrain_float(statesArray[i],-1.0f,1.0f);
|
|
// velocity limit 500 m/sec (could set this based on some multiple of max airspeed * EAS2TAS)
|
|
for (uint8_t i=4; i<=6; i++) statesArray[i] = constrain_float(statesArray[i],-5.0e2f,5.0e2f);
|
|
// position limit 1000 km - TODO apply circular limit
|
|
for (uint8_t i=7; i<=8; i++) statesArray[i] = constrain_float(statesArray[i],-1.0e6f,1.0e6f);
|
|
// height limit covers home alt on everest through to home alt at SL and balloon drop
|
|
stateStruct.position.z = constrain_float(stateStruct.position.z,-4.0e4f,1.0e4f);
|
|
// gyro bias limit (this needs to be set based on manufacturers specs)
|
|
for (uint8_t i=10; i<=12; i++) statesArray[i] = constrain_float(statesArray[i],-GYRO_BIAS_LIMIT*dtEkfAvg,GYRO_BIAS_LIMIT*dtEkfAvg);
|
|
// the accelerometer bias limit is controlled by a user adjustable parameter
|
|
for (uint8_t i=13; i<=15; i++) statesArray[i] = constrain_float(statesArray[i],-frontend->_accBiasLim*dtEkfAvg,frontend->_accBiasLim*dtEkfAvg);
|
|
// earth magnetic field limit
|
|
if (frontend->_mag_ef_limit <= 0 || !have_table_earth_field) {
|
|
// constrain to +/-1Ga
|
|
for (uint8_t i=16; i<=18; i++) statesArray[i] = constrain_float(statesArray[i],-1.0f,1.0f);
|
|
} else {
|
|
// use table constrain
|
|
MagTableConstrain();
|
|
}
|
|
// body magnetic field limit
|
|
for (uint8_t i=19; i<=21; i++) statesArray[i] = constrain_float(statesArray[i],-0.5f,0.5f);
|
|
// wind velocity limit 100 m/s (could be based on some multiple of max airspeed * EAS2TAS) - TODO apply circular limit
|
|
for (uint8_t i=22; i<=23; i++) statesArray[i] = constrain_float(statesArray[i],-100.0f,100.0f);
|
|
// constrain the terrain state to be below the vehicle height unless we are using terrain as the height datum
|
|
if (!inhibitGndState) {
|
|
terrainState = MAX(terrainState, stateStruct.position.z + rngOnGnd);
|
|
}
|
|
}
|
|
|
|
// calculate the NED earth spin vector in rad/sec
|
|
void NavEKF3_core::calcEarthRateNED(Vector3f &omega, int32_t latitude) const
|
|
{
|
|
float lat_rad = radians(latitude*1.0e-7f);
|
|
omega.x = earthRate*cosf(lat_rad);
|
|
omega.y = 0;
|
|
omega.z = -earthRate*sinf(lat_rad);
|
|
}
|
|
|
|
// set yaw from a single magnetometer sample
|
|
void NavEKF3_core::setYawFromMag()
|
|
{
|
|
if (!use_compass()) {
|
|
return;
|
|
}
|
|
|
|
// read the magnetometer data
|
|
readMagData();
|
|
|
|
// rotate the magnetic field into NED axes
|
|
Vector3f euler321;
|
|
stateStruct.quat.to_euler(euler321.x, euler321.y, euler321.z);
|
|
|
|
// set the yaw to zero and calculate the zero yaw rotation from body to earth frame
|
|
Matrix3f Tbn_zeroYaw;
|
|
Tbn_zeroYaw.from_euler(euler321.x, euler321.y, 0.0f);
|
|
|
|
//Vector3f magMeasNED = Tbn_zeroYaw * magDataDelayed.mag;
|
|
Vector3f magMeasNED = Tbn_zeroYaw * magDataDelayed.mag;
|
|
float yawAngMeasured = wrap_PI(-atan2f(magMeasNED.y, magMeasNED.x) + MagDeclination());
|
|
|
|
// update quaternion states and covariances
|
|
resetQuatStateYawOnly(yawAngMeasured, sq(MAX(frontend->_yawNoise, 1.0e-2f)));
|
|
}
|
|
|
|
// update mag field states and associated variances using magnetomer and declination data
|
|
void NavEKF3_core::resetMagFieldStates()
|
|
{
|
|
// Rotate Mag measurements into NED to set initial NED magnetic field states
|
|
|
|
// update rotation matrix from body to NED frame
|
|
stateStruct.quat.inverse().rotation_matrix(prevTnb);
|
|
|
|
if (have_table_earth_field && frontend->_mag_ef_limit > 0) {
|
|
stateStruct.earth_magfield = table_earth_field_ga;
|
|
} else {
|
|
stateStruct.earth_magfield = prevTnb.transposed() * magDataDelayed.mag;
|
|
}
|
|
|
|
// set the NE earth magnetic field states using the published declination
|
|
// and set the corresponding variances and covariances
|
|
alignMagStateDeclination();
|
|
|
|
// set the remaining variances and covariances
|
|
zeroRows(P,18,21);
|
|
zeroCols(P,18,21);
|
|
P[18][18] = sq(frontend->_magNoise);
|
|
P[19][19] = P[18][18];
|
|
P[20][20] = P[18][18];
|
|
P[21][21] = P[18][18];
|
|
|
|
// record the fact we have initialised the magnetic field states
|
|
recordMagReset();
|
|
}
|
|
|
|
// zero the attitude covariances, but preserve the variances
|
|
void NavEKF3_core::zeroAttCovOnly()
|
|
{
|
|
float varTemp[4];
|
|
for (uint8_t index=0; index<=3; index++) {
|
|
varTemp[index] = P[index][index];
|
|
}
|
|
zeroCols(P,0,3);
|
|
zeroRows(P,0,3);
|
|
for (uint8_t index=0; index<=3; index++) {
|
|
P[index][index] = varTemp[index];
|
|
}
|
|
}
|
|
|
|
// calculate the variances for the rotation vector equivalent
|
|
Vector3f NavEKF3_core::calcRotVecVariances()
|
|
{
|
|
Vector3f rotVarVec;
|
|
float q0 = stateStruct.quat[0];
|
|
float q1 = stateStruct.quat[1];
|
|
float q2 = stateStruct.quat[2];
|
|
float q3 = stateStruct.quat[3];
|
|
if (q0 < 0) {
|
|
q0 = -q0;
|
|
q1 = -q1;
|
|
q2 = -q2;
|
|
q3 = -q3;
|
|
}
|
|
float t2 = q0*q0;
|
|
float t3 = acosf(q0);
|
|
float t4 = -t2+1.0f;
|
|
float t5 = t2-1.0f;
|
|
if ((t4 > 1e-9f) && (t5 < -1e-9f)) {
|
|
float t6 = 1.0f/t5;
|
|
float t7 = q1*t6*2.0f;
|
|
float t8 = 1.0f/powf(t4,1.5f);
|
|
float t9 = q0*q1*t3*t8*2.0f;
|
|
float t10 = t7+t9;
|
|
float t11 = 1.0f/sqrtf(t4);
|
|
float t12 = q2*t6*2.0f;
|
|
float t13 = q0*q2*t3*t8*2.0f;
|
|
float t14 = t12+t13;
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float t15 = q3*t6*2.0f;
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float t16 = q0*q3*t3*t8*2.0f;
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float t17 = t15+t16;
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rotVarVec.x = t10*(P[0][0]*t10+P[1][0]*t3*t11*2.0f)+t3*t11*(P[0][1]*t10+P[1][1]*t3*t11*2.0f)*2.0f;
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rotVarVec.y = t14*(P[0][0]*t14+P[2][0]*t3*t11*2.0f)+t3*t11*(P[0][2]*t14+P[2][2]*t3*t11*2.0f)*2.0f;
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rotVarVec.z = t17*(P[0][0]*t17+P[3][0]*t3*t11*2.0f)+t3*t11*(P[0][3]*t17+P[3][3]*t3*t11*2.0f)*2.0f;
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} else {
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rotVarVec.x = 4.0f * P[1][1];
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rotVarVec.y = 4.0f * P[2][2];
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rotVarVec.z = 4.0f * P[3][3];
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}
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|
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|
return rotVarVec;
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}
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|
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|
// initialise the quaternion covariances using rotation vector variances
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void NavEKF3_core::initialiseQuatCovariances(const Vector3f &rotVarVec)
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|
{
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|
// calculate an equivalent rotation vector from the quaternion
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|
float q0 = stateStruct.quat[0];
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|
float q1 = stateStruct.quat[1];
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float q2 = stateStruct.quat[2];
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|
float q3 = stateStruct.quat[3];
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|
if (q0 < 0) {
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|
q0 = -q0;
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|
q1 = -q1;
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|
q2 = -q2;
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|
q3 = -q3;
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|
}
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|
float delta = 2.0f*acosf(q0);
|
|
float scaler;
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|
if (fabsf(delta) > 1e-6f) {
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|
scaler = (delta/sinf(delta*0.5f));
|
|
} else {
|
|
scaler = 2.0f;
|
|
}
|
|
float rotX = scaler*q1;
|
|
float rotY = scaler*q2;
|
|
float rotZ = scaler*q3;
|
|
|
|
// autocode generated using matlab symbolic toolbox
|
|
float t2 = rotX*rotX;
|
|
float t4 = rotY*rotY;
|
|
float t5 = rotZ*rotZ;
|
|
float t6 = t2+t4+t5;
|
|
if (t6 > 1e-9f) {
|
|
float t7 = sqrtf(t6);
|
|
float t8 = t7*0.5f;
|
|
float t3 = sinf(t8);
|
|
float t9 = t3*t3;
|
|
float t10 = 1.0f/t6;
|
|
float t11 = 1.0f/sqrtf(t6);
|
|
float t12 = cosf(t8);
|
|
float t13 = 1.0f/powf(t6,1.5f);
|
|
float t14 = t3*t11;
|
|
float t15 = rotX*rotY*t3*t13;
|
|
float t16 = rotX*rotZ*t3*t13;
|
|
float t17 = rotY*rotZ*t3*t13;
|
|
float t18 = t2*t10*t12*0.5f;
|
|
float t27 = t2*t3*t13;
|
|
float t19 = t14+t18-t27;
|
|
float t23 = rotX*rotY*t10*t12*0.5f;
|
|
float t28 = t15-t23;
|
|
float t20 = rotY*rotVarVec.y*t3*t11*t28*0.5f;
|
|
float t25 = rotX*rotZ*t10*t12*0.5f;
|
|
float t31 = t16-t25;
|
|
float t21 = rotZ*rotVarVec.z*t3*t11*t31*0.5f;
|
|
float t22 = t20+t21-rotX*rotVarVec.x*t3*t11*t19*0.5f;
|
|
float t24 = t15-t23;
|
|
float t26 = t16-t25;
|
|
float t29 = t4*t10*t12*0.5f;
|
|
float t34 = t3*t4*t13;
|
|
float t30 = t14+t29-t34;
|
|
float t32 = t5*t10*t12*0.5f;
|
|
float t40 = t3*t5*t13;
|
|
float t33 = t14+t32-t40;
|
|
float t36 = rotY*rotZ*t10*t12*0.5f;
|
|
float t39 = t17-t36;
|
|
float t35 = rotZ*rotVarVec.z*t3*t11*t39*0.5f;
|
|
float t37 = t15-t23;
|
|
float t38 = t17-t36;
|
|
float t41 = rotVarVec.x*(t15-t23)*(t16-t25);
|
|
float t42 = t41-rotVarVec.y*t30*t39-rotVarVec.z*t33*t39;
|
|
float t43 = t16-t25;
|
|
float t44 = t17-t36;
|
|
|
|
// zero all the quaternion covariances
|
|
zeroRows(P,0,3);
|
|
zeroCols(P,0,3);
|
|
|
|
// Update the quaternion internal covariances using auto-code generated using matlab symbolic toolbox
|
|
P[0][0] = rotVarVec.x*t2*t9*t10*0.25f+rotVarVec.y*t4*t9*t10*0.25f+rotVarVec.z*t5*t9*t10*0.25f;
|
|
P[0][1] = t22;
|
|
P[0][2] = t35+rotX*rotVarVec.x*t3*t11*(t15-rotX*rotY*t10*t12*0.5f)*0.5f-rotY*rotVarVec.y*t3*t11*t30*0.5f;
|
|
P[0][3] = rotX*rotVarVec.x*t3*t11*(t16-rotX*rotZ*t10*t12*0.5f)*0.5f+rotY*rotVarVec.y*t3*t11*(t17-rotY*rotZ*t10*t12*0.5f)*0.5f-rotZ*rotVarVec.z*t3*t11*t33*0.5f;
|
|
P[1][0] = t22;
|
|
P[1][1] = rotVarVec.x*(t19*t19)+rotVarVec.y*(t24*t24)+rotVarVec.z*(t26*t26);
|
|
P[1][2] = rotVarVec.z*(t16-t25)*(t17-rotY*rotZ*t10*t12*0.5f)-rotVarVec.x*t19*t28-rotVarVec.y*t28*t30;
|
|
P[1][3] = rotVarVec.y*(t15-t23)*(t17-rotY*rotZ*t10*t12*0.5f)-rotVarVec.x*t19*t31-rotVarVec.z*t31*t33;
|
|
P[2][0] = t35-rotY*rotVarVec.y*t3*t11*t30*0.5f+rotX*rotVarVec.x*t3*t11*(t15-t23)*0.5f;
|
|
P[2][1] = rotVarVec.z*(t16-t25)*(t17-t36)-rotVarVec.x*t19*t28-rotVarVec.y*t28*t30;
|
|
P[2][2] = rotVarVec.y*(t30*t30)+rotVarVec.x*(t37*t37)+rotVarVec.z*(t38*t38);
|
|
P[2][3] = t42;
|
|
P[3][0] = rotZ*rotVarVec.z*t3*t11*t33*(-0.5f)+rotX*rotVarVec.x*t3*t11*(t16-t25)*0.5f+rotY*rotVarVec.y*t3*t11*(t17-t36)*0.5f;
|
|
P[3][1] = rotVarVec.y*(t15-t23)*(t17-t36)-rotVarVec.x*t19*t31-rotVarVec.z*t31*t33;
|
|
P[3][2] = t42;
|
|
P[3][3] = rotVarVec.z*(t33*t33)+rotVarVec.x*(t43*t43)+rotVarVec.y*(t44*t44);
|
|
|
|
} else {
|
|
// the equations are badly conditioned so use a small angle approximation
|
|
P[0][0] = 0.0f;
|
|
P[0][1] = 0.0f;
|
|
P[0][2] = 0.0f;
|
|
P[0][3] = 0.0f;
|
|
P[1][0] = 0.0f;
|
|
P[1][1] = 0.25f*rotVarVec.x;
|
|
P[1][2] = 0.0f;
|
|
P[1][3] = 0.0f;
|
|
P[2][0] = 0.0f;
|
|
P[2][1] = 0.0f;
|
|
P[2][2] = 0.25f*rotVarVec.y;
|
|
P[2][3] = 0.0f;
|
|
P[3][0] = 0.0f;
|
|
P[3][1] = 0.0f;
|
|
P[3][2] = 0.0f;
|
|
P[3][3] = 0.25f*rotVarVec.z;
|
|
|
|
}
|
|
}
|
|
|