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Code Pull Requests Activity
689 Commits 514 Branches 136 Tags 234 MiB
Commit Graph

20 Commits

Author SHA1 Message Date
Roman aa53f45f15 terrain estimator: removed unused hrt dependancy 
Signed-off-by: Roman <bapstroman@gmail.com>
 2017-02-22 14:12:05 +01:00
Roman 6480fcc3d5 terrain estimator: fixed computation of filtered time since last range update 
- do not use hrt to compute delta time
- limit filter state
- do not use static variables

Signed-off-by: Roman <bapstroman@gmail.com>
 2017-02-22 14:12:05 +01:00
Paul Riseborough 6561edb9a5 EKF: Clean up terrain estimation functionality. 
This is a functionally equivalent. It moves all of the code for the terrain estimator into a single function call from the main filter update, making it clear that it is independent of the main filter.
 2017-02-22 14:12:05 +01:00
devbharat 8004e9fe7e EKF: Make range finder data continuous check more robust 
Use a filtered arrival time delta to determine if range data is continuous
 2017-02-22 14:12:05 +01:00
Paul Riseborough d94068b88a EKF: Simplify calculation of height above terrain observation variance 
The tilt compensation being applied previously was based on a flat earth geometric model assuming perfect tilt knowledge which reduces the effect of range errors on height error as the vehicle tilts. however in the real world, variations in terrain gradient and uncertainty in vehicle tilt and sensor alignment tend to increase height error with tilt, so the adjustment of observation variance with tilt has been removed given we do not have a valid mathematical model on which to base it.
 2017-02-22 14:12:05 +01:00
Paul Riseborough 3dadc98b43 EKF: enable scaling of range observation variance with height 2017-02-22 14:12:05 +01:00
Paul Riseborough cf9c8de167 EKF: Add arbitrary pitch offset for range sensor 2017-02-22 14:12:05 +01:00
devbharat d9688fae7d EKF: Simplify terrain position validity check 
Remove the relative accuracy check that was false triggering close to ground
 2017-02-22 14:12:05 +01:00
Daniel Agar 7883085e4a clang-tidy readability-simplify-boolean-expr (#235) 2017-02-02 00:17:43 -05:00
Paul Riseborough 744b79c1b2 EKF: Publish innovation test ratios 2016-10-06 09:02:29 +02:00
Roman c6e1d97176 terrain estimator: initialise with projection 
Signed-off-by: Roman <bapstroman@gmail.com>
 2016-09-20 14:09:42 +02:00
Paul Riseborough 65da9173b9 EKF: capture innovation checks and reset events in separate variables 
rename the innovation check status class variable and remove the reset flags from it.
 2016-06-01 17:13:00 +10:00
Paul Riseborough d80e71a499 EKF: capture HAGL innovation test failures 2016-06-01 17:13:00 +10:00
Paul Riseborough 172f4be594 EKF: Fix bug in calculation of terrain observation variance 2016-05-14 21:17:29 +10:00
Paul Riseborough 481c624975 EKF: Remove use of vehicle arm status 
Use single externally set in-air status for all decisions
 2016-05-10 10:23:08 +10:00
Paul Riseborough 5bf02517a7 EKF: Rationalise use of rotation matrices and improve efficiency 2016-04-12 11:14:31 +10:00
Paul Riseborough d2407c3463 EKF: code style updates 2016-03-13 21:17:51 +11:00
Paul Riseborough 962fd0aaf2 EKF: Adjust terrain process noise for gradient effect 2016-03-11 11:03:43 +11:00
Paul Riseborough 1a2da887ab EKF: Fix bug in calculation of terrain estimator Kalman gain 2016-03-11 11:03:43 +11:00
Paul Riseborough 82cbfafb34 EKF: Add source file for terrain vertical position estimator 
Implements a single state Kalman filter to estimate terrain vertical position relative to the NED origin.
 2016-03-11 11:03:43 +11:00