- move vehicle at reset detection ekf2 -> land_detector
- ekf_unit: reduce init period
- Fake fusion is when at rest is quite strong and makes the variance reduce rapidly. Reduce the amount of time we wait before checking if the variances are still large enough.
- ekf_unit: reduce minimum vel/pos variance required after init
- Fake pos fusion has a low observation noise, making the vel/pos variances reduce quickly.
Co-authored-by:: bresch <brescianimathieu@gmail.com>
- introduces new parameter EKF2_PREDICT_US to configure the filter
update period in microseconds
- actual filter update period will be an integer multiple of IMU
Using make tests in docker will fail, because the current basic image used by px4io/px4-dev-simulation-bionic is ubuntu18.04, the default version of cmake is 3.10, and the add_compile_definitions command is only available in cmake 3.12+(ubuntu 20.04).
an airpseed of > 2m/s is required to start the fusion (set by param)
fw mode is also required
Given the larger estimated windspeed after those changes, the change of
static pressure is larger and the height estimate takes more time to
reach the final value
A constant large value in the (signed) normalized innovation test ratio is a sign
of bias in the state estimate. This metric can be used to trigger a
covariance boost or reset
Some receivers are initializing to some heading and then resetting to
the correct one after a couple of seconds. EKF2 should detect that and
reset to the new value
bresch