A Ballistic Filter for GPS and Accelerometer Measurements

Report No. ARL-TR-5144
Authors: Andrew A. Thompson
Date/Pages: April 2010; 44 pages
Abstract: This report extends the work of Andrew A. Thompson described in the report titled Ballistics Filtering, ARL-TR-4735, published in March 2009, by showing the process of realizing the ideas through a simulation. By providing a concrete example it is hoped other realizations of the ideas can be pursued with a reasonable effort. Ballistic Filtering describes the dynamic equations that can be used to form Extended Kalman Filters (EKF) for the estimation of a projectile's trajectory. The steps associated with initialization and implementing an EKF are demonstrated through a specific task. The performance of an EKF processing Global Positioning System (GPS) observations is compared to the performance of an EKF processing both GPS and axial accelerometer observations.
Distribution: Approved for public release
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Last Update / Reviewed: April 1, 2010