There are a lot of parameters related to EKF(Extended Kalman Filter) to tune as mentioned in this page
http://ardupilot.org/dev/docs/extended-kalman-filter.html#extended-kalman-filter-ahrs-ekf-use
such as: AHRS_EKF_USE, EKF_ABIAS_PNOISE & EKF_ACC_PNOISE.
How can I tune these parameters? May someone please guide me to do this?
Thanks!