POINTER: Projectile Orientation In Navigation TERms for a Spinning Body

David Hepner and Thomas Harkins

Abstract:	A methodology for determining absolute inertial angular orientation of a spinning body is demonstrated utilizing independent angular measurements for two arbitrary body-fixed sensor systems. A particular application is denoted utilizing Army Research Laboratory (ARL) Solar Likeness Indicating Transducers (SLIT) and magnetoresistive sensors that provide body-fixed, independent angular measurements with regard to their respective local fields. Knowledge of the local field orientations and a coordinate transformation provide the inertial orientation angles, commonly called psi and theta, useful for evaluation and development of advanced flight bodies and as a navigation aid for brilliant munitions. The device is called POINTER: Projectile Orientation In Navigation TERms for a spinning body containing optical and magnetic sensors. Typical sensor data and reduction processes are reviewed and alternative field measurements are discussed.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	2585 - 2592
Cite this article:	Hepner, David, Harkins, Thomas, "POINTER: Projectile Orientation In Navigation TERms for a Spinning Body," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 2585-2592.
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