Issues for Robust Implementation of Relative GPS Guidance for Precision Weapon Delivery

Mark Youhanaie, Frank Ziolkowski, Neeraj Pujara

Abstract:	Much attention has been given recently to the application of Differential GPS phenomenology to improve the accuracy of Precision Guidance Weapons. Specifically, we consider scenarios where a targeting system provides target coordinates using an on-board GPS for its inertial reference system. By guiding the weapon in a coordinate frame that is correlated to the GPS bias errors inherent in the targeting data, guidance accuracies can be improved to near “precision” level without the use of a terminal guidance seeker. Initial Relative GPS concepts have been proposed to achieve this correlation by slaving the weapon GPS receiver to “track the same four satellites” as the GPS receiver on the targeting aircraft. While this simplistic approach may be effective in some scenarios, it is not sufficiently robust for general implementation. This paper identifies and examines specific issues that must be resolved before Relative GPS guidance can be considered an implementable methodology. Detailed consideration of these implementation issues is a subject of the USAF GPS Exploitation for Precision Targeting Program with Hughes Aircraft Company.
Published in:	Proceedings of the 1994 National Technical Meeting of The Institute of Navigation January 24 - 26, 1994 Catamaran Resort Hotel San Diego, CA
Pages:	363 - 368
Cite this article:	Youhanaie, Mark, Ziolkowski, Frank, Pujara, Neeraj, "Issues for Robust Implementation of Relative GPS Guidance for Precision Weapon Delivery," Proceedings of the 1994 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1994, pp. 363-368.
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