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157 Commits

Author SHA1 Message Date
Andrew Tridgell 9b81c5a1e0 AP_NavEKF3: use dal reference in EKF backends 
saves a bit of flash space
 2020-11-10 16:15:45 +11:00
Andrew Tridgell 1bdf6173ec AP_NavEKF3: removed have_ekf_logging 2020-11-10 16:15:45 +11:00
Andrew Tridgell a0de6c620f AP_NavEKF3: use selected GPS for gps_yaw_deg() 
more than one GPS could provide yaw
 2020-11-10 16:15:45 +11:00
Andrew Tridgell e87f98066f AP_NavEKF3: support replay with external navigation data 2020-11-10 16:15:45 +11:00
Andrew Tridgell 7bbbbd314c AP_NavEKF3: added optflow support for AP_DAL 2020-11-10 16:15:45 +11:00
Andrew Tridgell 096aab9388 AP_NavEKF3: convert to use AP_DAL for new replay structure 
Co-authored-by: Peter Barker <pbarker@barker.dropbear.id.au>
 2020-11-10 16:15:45 +11:00
Randy Mackay 2f1ae29a9c AP_NavEKF3: extnav data gets corrected boolean 
CorrectExtNavForSensorOffset and CorrectExtNavVelForSensorOffset use
corrected boolean to avoid correcting twice
 2020-10-24 12:35:58 +11:00
Randy Mackay 71487e9c10 AP_NavEKF3: gps_elements gets corrected flag 
CorrectGPSForAntennaOffset uses this flag to ensure position and velocity are only corrected once
 2020-10-24 08:49:33 +09:00
Andrew Tridgell 8a4b0f858a AP_NavEKF3: reset body mag variances at key points 
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
 2020-09-20 09:25:57 +10:00
Andrew Tridgell c03c43e52c AP_NavEKF3: use same mag switch pattern as EKF2 
based on Pauls suggested change
 2020-09-08 11:01:14 +10:00
Andrew Tridgell 3836b59041 AP_NavEKF3: fixed handling of failed compass 
when a compass goes unhealthy due to sensor failure we should try
another compass after 10s if another compass is available
 2020-09-08 11:01:14 +10:00
Harshit Kumar Sankhla edc3709653 AP_NavEKF3: implement sensor affinity using EK3_AFFINITY parameter 
this allows the EKF core index to be used to select a GPS/baro/mag
instance. This is an alternative to GPS blending that allows EKF lane
switching to be used to select the right combination of GPS and IMU
add logging to XKFS message
 2020-08-27 20:20:51 +10:00
Randy Mackay 46a7e96c48 AP_NavEKF3: readRngBcnData avoids array overflow from beacon count 2020-08-25 09:38:10 +09:00
Randy Mackay b86e16e927 AP_NavEKF3: readRngBcnData gets minor formatting fix 2020-08-25 09:38:10 +09:00
Randy Mackay 384029d278 AP_NavEKF3: rngBcnDataNew made local 2020-08-25 09:38:10 +09:00
Randy Mackay 8c877f02af AP_NavEKF3: shrink beacon arrays and add assert 2020-08-25 09:38:10 +09:00
Randy Mackay 6bf2057712 AP_NavEKF3: minor formatting fixes 2020-08-21 13:18:58 +09:00
Randy Mackay 4c40d2ac3f AP_NavEKF3: readyToUseBodyOdm uses delayed imu and wheel encoder timestamps 2020-08-21 13:18:58 +09:00
Randy Mackay 056a2de260 AP_NavEKF3: wheelOdmDataNew member made local 
this variable is never used outside the writeWheelOdom method
 2020-08-21 13:18:58 +09:00
Andrew Tridgell 44d5a923cc AP_NavEKF3: apply min GPS accuracy at measurement point 
this fixes an issue a RTK GPS gives 1cm horizontal and vertical
accuracy and that causes the variances to get too small
 2020-08-21 07:40:13 +10:00
chobits c722367c6c AP_NavEKF3: move extNavVelNew to local variable 2020-08-12 15:40:38 +09:00
Peter Barker 6b701ae3b3 AP_NavEKF3: correct includes 2020-08-07 19:20:07 +10:00
Paul Riseborough 9a4108f55e AP_NavEKF3: Simplify setting EK3_MAG_CAL 
Don't require user to separately set EK3_MAG_CAL to fly without a magnetomer
 2020-07-07 15:33:58 +10:00
Paul Riseborough 8ff6780323 AP_NavEKF3: Clarify distinct use cases for 'takeoff expected' 2020-07-07 15:33:58 +10:00
Paul Riseborough d1a0c2eb30 AP_NavEKF3: Start EKF-GSF yaw estimator before fixed wing takeoff 2020-07-07 15:33:58 +10:00
Dr.-Ing. Amilcar do Carmo Lucas fca8d33c50 AP_NavEKF3: fix vertical flyaways when rangefinder stops providing data 2020-06-24 21:16:50 +09:00
Randy Mackay ca0ae57b56 AP_NavEKF3: protect against position-delta sensor data being NaN 2020-06-19 13:46:52 +09:00
Randy Mackay 331f2f5fe7 AP_NavEKF3: writeExtNavData stores pos to buffer first 
This is a non-functional change
 2020-06-19 13:46:52 +09:00
Randy Mackay 578800dfbb AP_NavEKF3: protect against ExtNav being NaN 2020-06-19 13:46:52 +09:00
chobits 9b448b83c0 AP_NavEKF3: use err info from ext nav interface 2020-06-09 13:31:21 +09:00
Randy Mackay 0f212ca727 AP_NavEKF3: accept extnav at up to 50hz 2020-06-09 09:42:14 +10:00
chobits c7817eaca1 AP_NavEKF3: support VISION_SPEED_ESTIMATE 
Co-authored-by: Randy Mackay <rmackay9@yahoo.com>
 2020-06-02 08:33:42 +09:00
Randy Mackay ef02942459 AP_NavEKF3: writeBodyFrameOdom accepts delay 2020-05-15 10:07:52 +09:00
Randy Mackay c28fd27b02 AP_NavEKF3: writeExtNavData accepts delay 2020-05-15 10:07:52 +09:00
Randy Mackay 45e6896d95 AP_NavEKF3: ensure extnav angle error is at least 5deg 2020-05-14 08:02:13 +10:00
Andrew Tridgell 5350ea5c58 AP_NavEKF3: avoid build warnings with g++ 9 2020-05-10 15:11:22 +10:00
priseborough c5e465aec9 AP_NavEKF3: add external nav system support 
includes decoupling height source from use of external nav data
 2020-04-30 15:55:59 +09:00
Paul Riseborough ad5ae1813d AP_NavEKF3: Don't use geomag data when user specifies declination 2020-04-28 11:42:31 +09:00
Andrew Tridgell 216935c1f2 AP_NavEKF3: fixed loss of GPS fusion 
we must not do a storedGPS.recall unless we will be using the data,
otherwise we will lose GPS samples and risk stopping GPS fusion
 2020-04-24 09:43:23 +10:00
Paul Riseborough 863f989130 AP_NavEKF3: Fix integration of GPS yaw options 
AP_NavEKF3: fix failure to arm with EK3_MAG_CAL = 7

AP_NavEKF3: Fix failure to arm when not using magnetometer

AP_NavEKF3: Reduce yaw drift when EK3_MAG_CAL = 7
 2020-04-24 09:43:22 +10:00
Paul Riseborough 410b5825fb AP_NavEKF3: Enable use of EKF-GSF yaw estimate 
AP_NavEKF3: Add emergency yaw reset using a Gussian Sum Filter estimate

AP_NavEKF3: Reduce default minimum GPS velocity noise for Copters

Enables fail-safe to be set with more sensitivity and improves tracking accuracy.
Origin values were set using typical GPS performance for receivers on sale 6 years ago. Receiver performance has improved since then.

AP_NavEKF3: Prevent constant mag anomaly yaw resets

Prevents constant magnetic anomaly induced resets that can be triggered when flying with vehicle generated magnetic interference.
Allows for two resets per takeoff. Allowance for two resets is required, becasue a large ground based magnetic yaw anomaly can cause a sufficiently large yaw innovation that two resets in close succession are required.

AP_NavEKF3: Add option to fly without magnetometer

AP_NavEKF3: Rework emergency yaw reset logic

Use a separate external accessor function to request the yaw reset.
Allow reset requests to remain active for a defined period of time.
Tidy up reset function to split out accuracy check.

AP_NavEKF3: Fix vulnerability to lane switch race condition

Prevents the situation where a lane switch results in a lane being selected that does not have the correct yaw. This can occur if the primary lane becomes unhealthy before the external failsafe monitor has time to react.

AP_NavEKF3: Fix EKF_MAG_CAL = 6 behaviours

Fix bug causing the yaw alignment to be performed at startup before the GSF had a valid estimate.
Fix bug causing emergency yaw message to be output for a normal reset.
Fix vulnerability to reported negative yaw variance.
Remove duplicate timer checks.

AP_NavEKF3: Update EK3_MAG_CAL documentation

AP_NavEKF3: Relax yaw gyro bias convergence check when not using mag

AP_NavEKF3: Reduce yaw drift in hover with no yaw sensor

Uses the GSF yaw estimate if available which is better than the EKF's own yaw when no yaw sensor is available.
 2020-04-24 09:43:22 +10:00
Peter Barker 87108b86c8 AP_NavEKF3: add documentation for XKFM message 2020-04-21 09:48:43 +10:00
Andrew Tridgell 1f8cd830ea AP_NavEKF3: fixed use of tabs 2020-04-11 21:14:31 +10:00
Paul Riseborough eeac0a05b9 AP_NavEKF3: Improvements to on ground movement check 
Reduce sensitivity and log test ratios.
Reduce base logging rate to 5Hz and log when status changes.
 2020-04-11 21:14:31 +10:00
Paul Riseborough ebb8bb4f6f AP_NavEKF3: Enable use of yaw fusion before external yaw sensor starts 2020-04-11 21:14:31 +10:00
Andrew Tridgell 6f04fae4a0 AP_NavEKF3: added fallback to mag option with external yaw 
this allows for a magnetometer to be used as a fallback yaw source in
flight when using an external yaw source such as a GPS. The
magnetometer bias is learned while the GPS yaw is available and
fallback is only done if the mag yaw and GPS yaw are consistent when
fallback is enabled

This also learns the Z gyro bias until first yaw alignment when
MAG_CAL is EXTERNAL_YAW_FALLBACK. This prevents large gyro bias
building while waiting for GPS lock
 2020-04-11 21:14:31 +10:00
Peter Barker 4c19eb4bab AP_NavEKF3: use compass reference rather than repeatedly asking AHRS for it 2020-03-13 08:26:18 +11:00
Peter Barker 4431d01230 AP_NavEKF3: stop relying on the presence of a RangeFinder 2019-12-11 08:09:01 +11:00
Andrew Tridgell c6aad9b1ec AP_NavEKF3: don't use WMM tables unless we have a compass scale factor set 2019-12-03 20:48:23 +11:00
Peter Barker fe8599d6d7 AP_NavEKF3: adjust for renaming of RangeFinder files 2019-11-12 07:14:37 +08:00
Peter Barker 11b372a986 AP_NavEKF3: use enum-class for RangeFinder Status 2019-11-09 08:01:53 +11:00
Randy Mackay b4a8691a9e AP_NavEKF3: remove wheel encoder update limit 2019-10-22 07:15:48 +08:00
Jaaaky 54f8e1137e AP_NavEKF3: added EK3_MAG_EF_LIM parameter 
Adapted from EKF2 implementation as of commits
3835d2613, e9ed3540f and df4fc0fff
this sets a limit on the difference between the earth field from the
WMM tables and the learned earth field inside the EKF. Setting it to
zero disables the feature. A positive value sets the limit in mGauss.
 2019-10-20 07:34:35 +11:00
Andrew Tridgell c2067d5bc2 AP_NavEKF3: set a min yaw accuracy from GPS of 5 degrees 
GPS modules tend to be rather optimistic about their yaw accuracy. By
setting a min or 5 degrees we prevent the user constantly getting
warnings about yaw innovations
 2019-10-15 11:06:11 +11:00
Peter Barker 1c187d8feb AP_NavEKF3: correct return of empty prearm string 2019-09-19 08:47:47 +09:00
Michael du Breuil 9a7d64e8fc AP_NavEKF3: Allow the GPS to be responsible for logging 2019-09-10 09:09:17 +10:00
Andrew Tridgell 451fe840ee AP_NavEKF3: ensure that EKF origin stays in sync on all cores 
this prevents the EKF origin on different cores from being initialised
to different values. A common value is stored in the frontend and used
by a core if it doesn't have an origin
 2019-07-29 10:08:22 +10:00
Andrew Tridgell b56914b879 AP_NavEKF3: use GPS yaw if available and enabled 
this allows a suitable GPS to be used as an external yaw source
 2019-07-13 11:05:57 +10:00
priseborough 977a7b68ed AP_NavEKF3: Add push to buffer for external yaw sensor data 2019-07-13 11:05:57 +10:00
priseborough 87c7649d09 AP_NavEKF3: Add interface for yaw angle measurements 2019-07-13 11:05:57 +10:00
Andrew Tridgell 634db441f8 AP_NavEKF3: origin handling fixes from Francisco 2019-07-11 06:40:55 +10:00
Andrew Tridgell f3fc910abe AP_NavEKF3: continuously update gpsGoodToAlign 
use it to determine how to handle a height datum reset
 2019-07-07 19:20:32 +10:00
Andrew Tridgell 209bca162c AP_NavEKF3: added inactive bias learning 
this allows for biases on inactive IMUs to be learned so that an IMU
switch within an EKF lane does not cause a jump in the IMU data
 2019-07-07 19:03:01 +10:00
Peter Barker ef2589738d AP_NavEKF3: use beacon singleton 2019-07-01 07:20:58 +09:00
Michael du Breuil b624f6f008 AP_NavEKF3: Reduce scope of AP_Baro.h 2019-06-27 14:56:21 +10:00
Michael du Breuil be74b631fe AP_NavEKF3: Fix AP_GPS.h include 2019-06-18 10:02:05 +10:00
Peter Barker dce472745e AP_NavEKF3: take EAS2TAS from AHRS rather than airspeed 2019-06-06 12:44:36 +10:00
Pierre Kancir b3a1c9c90c AP_NavEKF3: use get_distance_NE instead of location_diff 2019-04-08 08:00:52 -07:00
Arjun Vinod f382a657bd AP_NavEKF3: fixed typos 2019-02-26 08:33:39 +11:00
Tom Pittenger 55377b234f AP_NavEKF3: remove HAL_CPU_CLASS_150 check, 150 is already a minimum requirement 2019-02-17 13:00:00 -08:00
Andrew Tridgell 39ffef1f08 AP_NavEKF3: fixed EKF compass switching 
when we had 3 compasses the lack of the 'break' meant when we switched
compass in flight we would always switch back instantly to the one
that we had just rejected.
 2019-02-09 13:04:52 +11:00
Andrew Tridgell de58fb4637 AP_NavEKF3: support in-flight compass learning 2018-10-24 07:25:42 +10:00
Peter Barker be9235a581 AP_NavEKF3: fix writeOptFlowMeas signature 
const some of the vectors, stop taking references to scalars that aren't
being changed
 2018-09-11 09:03:22 +10:00
Pierre Kancir 48c5a9b9c5 AP_NavEKF3: style change in BCN mesurements 2018-04-03 09:54:43 +09:00
Peter Barker 55b8a2288e AP_NavEKF3: use ins singleton 2018-03-16 00:37:35 -07:00
Peter Barker 7b1a906c4e AP_NavEKF3: use baro singleton 2018-03-08 21:20:05 -08:00
Paul Riseborough 6a1055389d AP_NavEKF3: Fix origin height estimator indexing bug 
EKF3 should use index 9 to access vertical position states
 2018-02-21 17:04:30 +10:00
Peter Barker 5dc714bf5f AP_NavEKF3: use GPS singleton 2017-12-27 00:58:02 +00:00
Peter Barker 63440800fc AP_NavEKF3: use rangefinder backend accessors 2017-08-15 18:30:45 +01:00
priseborough 2310cb6d19 AP_NavEKF3: Enable external control over use of GPS vertical velocity 2017-08-10 19:49:45 +10:00
priseborough db7c8439c6 AP_NavEKF3: Fix bug in wheel odometry timestamp correction 2017-07-28 12:48:38 +09:00
priseborough c7f6d52065 AP_NavEKF3: Add wheel encoder odometry 
Uses the existing body frame odometry observation model.
Handles each sensored wheel as a separate sensor.
 2017-07-27 16:52:27 +09:00
priseborough 593437ca95 AP_NavEKF3: Add tuning of visual odometry observation error 
Also adjust default values based on replay analysis.
 2017-07-27 16:52:25 +09:00
Peter Barker 93e09c51d3 AP_NavEKF3: eliminate GCS_MAVLINK::send_statustext_all 2017-07-11 23:53:53 +01:00
priseborough 2a9eceaf10 AP_NavEKF3: Fix bugs causing height drift when using range beacons 2017-06-23 00:43:58 +01:00
priseborough 7d63286088 AP_NavEKF3: update to match AP_GPS interface change 2017-06-21 11:44:45 +01:00
priseborough 628d140319 AP_NavEKF3: Make target covariance time step larger 
The target covariance time step has been increased from 10 to 12 msec to improve conditioning of the covariance prediction calculation.
 2017-06-14 12:44:41 +01:00
priseborough 9da3caca47 AP_NavEKF3: Improve GPS reference height estimator 
Fix rounding error bug preventing state from updating after initial convergence.
Decouple GPS reference height from published EKf origin height.
Add bitmask parameter to control update and publishing of GPS reference height.
 2017-06-14 12:44:41 +01:00
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
Andrew Tridgell adb281cd4e AP_NavEKF3: added timing statistics logging 2017-04-28 17:19:39 +10:00
priseborough fb7104f4e3 AP_NavEKF3: add fusion method for body frame odometry data 2017-04-19 11:04:40 +09:00
Randy Mackay 3f6a734a71 AP_NavEKF3: only use downward facing rangefinder 2017-02-27 15:18:11 +09:00
priseborough e399f57ffa AP_NavEKF3: prevent NaN if RNGFND_GNDCLEAR is zero 2017-02-15 07:04:38 +09:00
priseborough 2e5ac40ef6 AP_NavEKF3: remove unnecessary stdio includes 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