* reset position by fusion
* handle local_pos_valid for fixed wing in gnss denied
* [WIP] ekf2: setEkfGlobalOrigin respect current height reference and vertical position aiding
* global origin, also reset vertical pos without gps as ref
* fix wo gnss, that bitcraze ci passes
* revert some changes as requested
* remove duplicate reset messages
* undo unrelated whitespace changes, I'll fix it everywhere in a followup
* [SQUASH] ekf2: add vehicle_command_ack
* resetGlobalPosToExternalObservation consolidate logic
* remove gnss check from local_pos validation check
* reset when 0<accuracy<1, otherwise fuse
* replace gps param with flag
* ekf2: dead reckon time exceeded, respect ZUPT preflight if air data or optical flow expected
* subtract timeout from last inertial dead-reck, change fake pos conditions, save flash
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Co-authored-by: Daniel Agar <daniel@agar.ca>
- track accel clipping count per axis
- only set bad_acc_clipping fault_status if at least one axis is
clipping continuously or if all have been clipping at warning level
- Note: this doesn't impact the clipping projections that boost the
accel process noise, pause bias estimation, and skip gravity fusion
on a per sample basis
- new parameter EKF2_LOG_VERBOSE to enable (currently enabled by default)
- force advertise topics immediately (based on EKF2_LOG_VERBOSE and per aid source configuration)
- logger optionally log all estimator topics at minimal rate
When using optical flow for terrain aiding, we cannot assume that the
terrain estimate is valid if flow is fused as is can only be observed
during motion. When no direct observation is available, the terrain is
assumed to be valid if its 1sigma uncertainty is < 10% of the hagl.
Terrain is the state: terrain vertical position
Hagl (height above ground level) is the vertical distance between the
vertical position and the terrain vertical position
- upate to NOAA grid API to build WMM table in one pass
- refactor declination/inclination/totalintensity table printing to
shared method
- compute scaling factor to maximize resolution
In this mode, the mag is used to inilialize the heading.
During flight, the heading is predicted using gyros and corrected
by GNSS measurements if available.
The EKF can recover from an initial bad earth mag field estimate.
Constraining the field is not necessary and can lead to an unpredicted
behavior of the filter.
Declination fusion is safe to run even when the horizontal field is 0
On slowly moving vehicles (e.g.: boats, rovers), the yaw estimator has
worse convergence than the main EKF. Resetting the mag states using the
yaw estimator as reference can lead to poor heading. Also, the EKF can
recover really well from initially incorrect mag states.
- increase symforce CppConfig zero_initialization_sparsity_threshold so
that a Matrix setZero() call is performed instead of individually zeroing
Co-authored-by: bresch <brescianimathieu@gmail.com>
Daniel Agar