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Proceedings Paper

Spiral guidance law for passive range estimation
Author(s): Roger L. Gray
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Paper Abstract

This paper introduces a spiral guidance law for intercepting missiles or satellites. The law is termed spiral because it directs the kill vehicle (KV) along a spiral-shape trajectory. The guidance law has two important features: (1) it directs the KV along a trajectory that makes target range observable to an angle-only (passive) sensor, and (2) it does not require the KV's thrust to be throttled. The second feature permits the use of divert motors that burn at a fixed predetermined rate, such as fixed-impulse solid-fuel divert motors.

Paper Details

Date Published: 1 October 1993
PDF: 9 pages
Proc. SPIE 1950, Acquisition, Tracking, and Pointing VII, (1 October 1993); doi: 10.1117/12.156607
Show Author Affiliations
Roger L. Gray, Naval Surface Warfare Ctr. (United States)


Published in SPIE Proceedings Vol. 1950:
Acquisition, Tracking, and Pointing VII
Michael K. Masten; Larry A. Stockum, Editor(s)

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