New Generation GPS and Radar Aided Inertial Navigation System for Ballistic Missile Interceptors

James L. Anders, Carmen Bubar, Victor Estrada, Carl Johnson and Renato S. Ornedo

Abstract:	This paper describes the enhanced features of an inertial navigation system aided by Global Positioning System (GPS) and radar measurements for ballistic missile interceptors. The existing system design has shown remarkable performance in numerous flight tests. The new inertial navigation system is designed to meet more demanding tactical missions. In this particular application, a ship-launched interceptor missile is tracked by a ship-based radar system as it engages a ballistic target missile. A successful intercept depends on the missile navigation accuracy and the removal of alignment error between the interceptor missile and radar tracking system. The interceptor.s on-board inertial navigation system implements a Kalman filter to determine in-flight corrections to the navigation and alignment errors. The filter processes the GPS pseudo-range and delta range measurements from an all-in-view SAASM receiver and radar-measured position data uplinked from the ship. The paper provides a description of the navigation and alignment processing, upgraded navigation hardware, and relevant operational requirements.
Published in:	Proceedings of the 60th Annual Meeting of The Institute of Navigation (2004) June 7 - 9, 2004 Dayton Marriott Hotel Dayton, OH
Pages:	598 - 603
Cite this article:	Anders, James L., Bubar, Carmen, Estrada, Victor, Johnson, Carl, Ornedo, Renato S., "New Generation GPS and Radar Aided Inertial Navigation System for Ballistic Missile Interceptors," Proceedings of the 60th Annual Meeting of The Institute of Navigation (2004), Dayton, OH, June 2004, pp. 598-603.
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