RIVeR-Lab / kvh

ROS driver for KVH IMU's
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Odometry Filter Returns NaN for State Values #14

Closed aruisdante closed 5 years ago

aruisdante commented 11 years ago

Currently if one runs the OdometryFilter in KVHDriveNode it quickly returns nan's for state regaurdless of input/measurement. This seems to result from the covariance matrix becoming non Positive-Definite, a requirement of the EKF. One possibility could be the perfect linear dependance of some states on other states.