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0f1c7590e9
with measurement noise auto-tuning The purpose of this estimator is to improve land detection and vertical velocity feedforward Recovery strategy: This is required when the setpoint suddenly changes in air or that the EKF is diverging. A lowpassed test ratio is used as a trigger for the recovery logic Also, a lowpassed residual is used to estimate the steady-state value and remove it when estimating the accel noise to avoid increasing the accel noise when the redisual is caused by an offset.