- synthetic airspeed will only be declared valid as soon as the wind variance
has dropped below a parameterized threshold. This is useful for vehicles without
an airspeed sensor which rely on synthetic airspeed but only once the vehicle
has turned sufficiently for the wind estimates to be reliable.
Signed-off-by: RomanBapst <bapstroman@gmail.com>
The noise spectral density, NSD, (square root of power spectral density) is a
continuous-time parameter that makes the tuning independent from the EKF
prediction rate.
NSD corresponds to the rate at which the state uncertainty increases
when no measurements are fused into the filter.
Given that the current prediction rate of the wind estimator is 1Hz, the
same tuning is obtained with the same values as before.
The current practice of adding topics to the default set isn't scalable,
as it affects all setups.
By making sure topics are advertised on init, logger can just discard
topics that don't exist. This does not work for all topics, so topics are
specifically marked as optional. It can be extended to more topics later
on though.
This reduces the list of topics by ~35 on a pixracer configured as quad,
and reduces RAM usage by ~1KB.
The situation where this would be desired is unclear, plus it's basically
the same as setting ASPD_SC_P_NOISE to a very small value.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Do no longer use tas_innovation from wind estimator and test ratio, but calculate
the innovation based on wind estimate, TAS measurement (including currently applied scale)
and ground velocity. Use innovations directly to trigger failure.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
- run airspeed scale estimation always, not in dedicated mode
- add option to apply scale automatically, with extra feasibility check
- add airspeed scale for all 3 possible airspeed instances
- clean up parameters
- add check for data stuck (non-changing airspeed data)
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
* fix disable airspeed check with negative ASPD_FS_INTEG
* improve logic when nav velocity data is not good
* simplify logic. Reset integrator state when the check is not run.
Stall speed check would otherwise trigger during landing if airspeed falls below
stall speed before landing is detected.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
- publish wind estimate only from EKF, and wind speeds from airspeed selector to new separate topic (airspeed_wind)
- rename message wind_estimate to wind
- publish wind from currently used ekf instance (ekf2selector)
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
That enables the sensor checks by default
The default for the innovation check integral of 5 is rather conservative, thus
makeing it less likely to be triggered by accidnet (e.g. due to bad wind estimate).
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
- parameter updates can be quite expensive because they trigger nearly all modules to reload all of their parameters immediately
- limit modules from updating faster than once per second
RomanBapst