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* altos: Ignore alt error for fast->coast. Allow larger error for baro apogee.Keith Packard2011-03-23
| | | | | | | | | | | | | | With the fixed kalman filter, transitions across mach don't cause bumps in the merged filter. And, with working kalman bits, the signal for broken baro detection is stronger and so we can allow for baro apogee detection in cases where noise occurs close to apogee. Bump the kalman filter to trust the baro less so that the model tracks across mach. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Restore sensible kalman valuesKeith Packard2011-03-22
| | | | | | | Now that the kalman code seems to work correctly, restore the sensor errors and model errors to match reality Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add nickle kalman implementation.Keith Packard2011-03-21
This generates the constants needed to implement Kalman filtering in the flight firmware. Signed-off-by: Keith Packard <keithp@keithp.com>