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62 Commits

Author SHA1 Message Date
Dr.-Ing. Amilcar Do Carmo Lucas 23b7f1e645 AP_NavEKF3: Improve comments, typos 2017-05-03 08:45:01 +09:00
priseborough 4a898037e9 AP_NavEKF3: documentation update 2017-05-01 14:24:55 +10:00
Andrew Tridgell a04aff7a7d AP_NavEKF3: added inter-EKF scheduling cooperation 
this changes the stragegy for load levelling between EKF cores so it
works between EK2 and EK3, and with future estimators as well.

It allows us to run EK3 and EK2 at the same time with good scheduling
performance
 2017-05-01 14:24:55 +10:00
priseborough 0bf50fd56f AP_NavEKF3: Add monitoring of average EKF time step 2017-04-29 11:03:44 +10:00
priseborough 3ce81967ae AP_NavEKF3: Improve calculation and use of average EKF time step 2017-04-29 11:03:44 +10:00
priseborough 7abf9997e6 AP_NavEKF3: Correctly initialise dtIMUavg time step and apply LPF 2017-04-29 11:03:44 +10:00
priseborough 1301b9797a AP_NavEKF3: Fix solution validity reporting bug 
Fixes bug that causes relative position status to report as false when using optical flow and using range finder as the primary height sensor.
 2017-04-28 17:19:23 +01:00
Andrew Tridgell adb281cd4e AP_NavEKF3: added timing statistics logging 2017-04-28 17:19:39 +10:00
priseborough f208986d43 AP_NavEKF3: Reset covariance if bad mag fusion update 2017-04-27 20:14:21 +10:00
Andrew Tridgell 18b66f9eed AP_NavEKF3: fixed reset of coviariance matrix 2017-04-27 18:33:25 +10:00
Randy Mackay b255c7b370 AP_NavEKF: add setOrigin 2017-04-22 10:37:31 +09:00
priseborough fb7104f4e3 AP_NavEKF3: add fusion method for body frame odometry data 2017-04-19 11:04:40 +09:00
Andrew Tridgell 248773a7c8 AP_NavEKF3: allow access to quaternion for each instance 2017-04-16 14:01:36 +10:00
priseborough 8250fe4943 AP_NavEKF3: fix documentation derivation references 2017-04-10 15:47:35 +09:00
priseborough 06c073e448 AP_NavEKF3: Update tilt alignment check 2017-04-05 20:16:16 +10:00
Jonathan Challinger c7a73e84d6 AP_NavEKF3: apply height innovation floor only when barometer is in use 2017-03-24 14:42:36 -07:00
priseborough 56a9e2c462 AP_NavEKF3: Reference correct derivation 2017-03-13 11:31:51 +11:00
priseborough 18927395d7 AP_NavEKF3: log correct GPS for replay 2017-03-13 11:31:51 +11:00
priseborough 01551a4423 AP_NavEKF3: handle position jump caused by change in GPS receiver 
If the GPS receiver selection changes and we are using GPS for height, the vertical position will be reset to the new GPS height measurement.
correct output observer history when doing a GPS height reset
 2017-03-13 11:31:51 +11:00
Randy Mackay 3e039a6ba4 AP_NavEKF3: minor formatting fixes 
No functional change
 2017-03-06 18:40:18 +11:00
Randy Mackay a80c0a231d AP_NavEKF3: attempt to set-up every core 
previously we would only call setup_core for the 2nd core if the first had been setup successfully
 2017-03-06 18:40:18 +11:00
priseborough 7a8783f35e AP_NavEKF3: Fix bug preventing reset to GPS 
This fixes a bug that prevented the reset to the GPS position occurring if GPS velocity observations were still passing innovation consistency checks.
 2017-03-06 17:11:39 +11:00
Randy Mackay 3f6a734a71 AP_NavEKF3: only use downward facing rangefinder 2017-02-27 15:18:11 +09:00
Michael du Breuil 1de198883d AP_NavEKF3: Check gps vertical accuracy for aligning the GPS 2017-02-22 11:53:42 -08:00
Jacob Walser ac1e1b9460 AP_NavEKF3: Add set_baro_alt_noise method 2017-02-21 11:26:14 +11:00
Francisco Ferreira 23f959b92f
AP_NavEKF3: fix copied parameter descriptions 2017-02-15 19:20:04 +00:00
priseborough de7a679534 AP_NavEKF3: Enable simple heading fusion to be set for specific cores 2017-02-15 19:09:45 +00:00
priseborough ccb952ba31 AP_NavEKF3: Use the same mag fusion method for all cores 
The original reason for using a different method for the second core is no longer valid.
 2017-02-15 19:01:10 +00:00
priseborough e399f57ffa AP_NavEKF3: prevent NaN if RNGFND_GNDCLEAR is zero 2017-02-15 07:04:38 +09:00
priseborough 784fa6fed8 AP_NavEKF3: fix compiler error 2017-01-27 16:57:42 +09:00
priseborough 2c36da2b21 AP_NavEKF3: relocate perf monitor to count all three mag components 2017-01-27 16:57:42 +09:00
priseborough 4d958952f6 AP_NavEKF3: use standard unit descriptor for milliseconds 2017-01-27 16:57:42 +09:00
priseborough b5ba1d0346 AP_NavEKF3: protect against large delay values returned by the GPS library 2017-01-27 16:57:42 +09:00
priseborough 4540faf6af AP_NavEKF3: Improve waiting for GPS configuration 
Do not time out and provide an escalating series of messages. We may need to adjust the time thresholds used for escalation.
Do not wait if the EKF is not using the GPS.
 2017-01-27 16:57:42 +09:00
priseborough 52e8f687d9 AP_NavEKF3: fix logic bug introduced by magnetometer use changes 2017-01-27 16:57:42 +09:00
priseborough a133d55b6d AP_NavEKF3: Allow copters to fly with magnetometers disabled 
Copter operation without a magnetometer is limited to constant position and relative position modes only (no GPS or range beacon fusion permitted)
Copter optical flow operation without a magnetometer is permitted.
The ability of planes to takeoff/launch without a magnetometer and align the yaw using the GPS velocity is retained.
 2017-01-27 16:57:42 +09:00
priseborough 2e5ac40ef6 AP_NavEKF3: remove unnecessary stdio includes 2017-01-27 16:57:42 +09:00
priseborough 8688d1ddac AP_NavEKF3: Improve range finder selection logic 
Fixes bug that could leave it locked out of range finder use.
 2017-01-27 16:57:42 +09:00
priseborough 7e8f3fca53 AP_NavEKF3: Address review comments 
Removes a leftover debug printf statement.
Fixes documentation errors.
Replace remaining fmaxf function calls with Ardupilot MAX function
 2017-01-27 16:57:42 +09:00
priseborough b723966b8d AP_NavEKF2: Add protection against bad GPS time delay values 
Prevent bad values for GPS time delay pushing the GPS time stamp outside the range of IMU data contained in the buffer. If this occurs it can prevent the GPS measurements from being fused and cause loss of navigation.
 2017-01-27 16:57:42 +09:00
priseborough 59ee074560 AP_NavEKF3: Remove EKF2 names 2017-01-27 16:57:42 +09:00
priseborough b862f0d7ad AP_NavEKF3: Enable use of GPS delay value from returned by the driver 
Use the time delay returned by the GPS driver.
Wait long enough for the GPS configuration to be determined, but time out after 30 seconds and warn the user that a default value for time delay will be used.
 2017-01-27 16:57:42 +09:00
priseborough 69a47d7522 AP_NavEKF3: Improve reporting of buffer allocation 2017-01-27 16:57:42 +09:00
priseborough ceb42225fd AP_NavEKF3: Ensure enough time to fill buffers when starting filter 2017-01-27 16:57:42 +09:00
priseborough a8fd1d8bcd AP_NavEKF3: fix potential time-stamping bug 
Use a consistent time reference
 2017-01-27 16:57:42 +09:00
priseborough 8d1733cee6 AP_NavEKF3: Use FIR filtered airspeed 
Switch to use of an airspeed reading averaged across the raw sensor readings. since the last update.
This avoids use of the IIR which requires a larger time delay compensation and violates the assumption of uncorrelated noise.
The time delay parameter has been reduced to compensate for the removal of the airspeed IIR filtering.
 2017-01-27 16:57:42 +09:00
priseborough 9261c34097 AP_NavEKF3: Update default GPS delay 
This value is a compromise between what works best for a Ublox 6 which is around 200msec delay and the more recent 7 and 8 series receivers that are around 120msec delay.
 2017-01-27 16:57:42 +09:00
priseborough ed5039823f AP_NavEKF3: Adapt sensor buffer lengths 
Adapt the lengths of the IMU and observations buffers on startup to the specified time delays and update rates.
This does require the EKF to be re-started if time delays are changed.
 2017-01-27 16:57:42 +09:00
priseborough 2cc48f78a7 AP_NavEKF3: Update range beacon fusion 
Add innovation consistency check to alignment filter and publish alignment filter status data
 2017-01-27 16:57:42 +09:00
priseborough 92b8c33b19 AP_NavEKF3: publish 3-state range beacon estimator states 2017-01-27 16:57:42 +09:00