Finding Attitude of a Spin Axis From Roll Angles

Report No. ARL-TR-5469
Authors: Andrew A. Thompson
Date/Pages: March 2011; 32 pages
Abstract: This report describes a method for determining the attitude of a spin axis from rotational measurements between known locations. The described method goes beyond finding down to solve for the attitude. This solution was conceived as a method to enhance a GPS receiver on a spinning body. The method was made more general by only dealing with locations and directions and is potentially useful for a wider class of applications. The generalized problem has been solved and simulations have been run to verify the implementation of the solution. Pressure waves and electromagnetic energy could be used; systems could combine magnetic, visual, radar, IR, and acoustic information to determine attitude. The method described has received U.S. Patent 7,388,538 B1.
Distribution: Approved for public release
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Last Update / Reviewed: March 1, 2011