mjb/altos/src/ao_kalman.c, branch 0.9.4.5

altos: Reduce height averaging filter time constant

2011-08-02T08:53:33+00:00

Using the longer time constant could lead to false landing detection just after apogee, which is definitely not a good idea. Signed-off-by: Keith Packard

altos: Average height values for landing detection

2011-08-02T07:30:08+00:00

Instead of using the direct output of the kalman filter and hoping that is quiet enough to detect landing, filter that with a long exponential decay filter and then check to make sure that doesn't change more than 2m in 5 seconds as a trigger for landing detection. Tested with existing telemetrum flight logs and it correctly detects landing in all cases. Signed-off-by: Keith Packard

altos: Add ability to read new TELEM files to ao_flight_test

2011-07-18T01:49:55+00:00

Not that telem files are currently very useful as the kalman filter gets completly confused by the variable steps caused by missing data, but... Signed-off-by: Keith Packard

altos: Baro useful ceiling is MSL, not AGL

2011-04-01T03:53:12+00:00

Use MSL instead of AGL for detecting over-range baro sensor values. Always trust baro sensor during descent; it'll get there eventually. Signed-off-by: Keith Packard

altos: Split up flight code into separate flight/sample/kalman bits

2011-03-29T00:54:44+00:00

The flight code mashed together data processing, filtering and actual flight managament into one giant pile. Split things up so that we have: ao_sample.c: Sensor data processing. Reads the ring, handles calibration ao_kalman.c: Filter the data to track the accel/speed/height values ao_flight.c: Flight state management, specific to rocketry. The plan is to re-use ao_sample.c and ao_kalman.c for hardware not specifically designed for rocketry, like TeleNano. Signed-off-by: Keith Packard