Use of the GPS Aided Inertial Navigation System in the Navy Standard Missile for the BMDO/Navy LEAP Technology Demonstration Program

Alfred Luckau, Todd Moore, Kevin Rudolph, and Frank Ziolkowski

Abstract:	To demonstrate the feasibility of a sea-based theater-wide ballistic missile defense capability, the Navy Program Executive Office Theater Air Defense (PEO TAD), in conjunction with the Ballistic Missile Defense Organization (BMDO), performed two flight tests of a Lightweight Exo-Atmospheric Projectile (LEAP) mounted on a Navy Standard Missile 2 Block III Extended Range Terrier (SM 2 BLK III ER). The SM 2 BLK III ER was augmented with a third stage utilizing an integrated GPS/Inertial Navigation System (INS) allowing increased range, accuracy, and exo-atmospheric control. The SM 2 Flight Test Vehicles (FIV) were fired from the USS Richmond K. Turner (CG-20) located off the coast on the Eastern Test Range, against target vehicles launched from NASA’s Wallops Flight Facility on the Virginia coast. The Navy LEAP mission posed a challenging environment, including high vehicle dynamics, exe atmospheric operation, and short mission duration. An adapted version of the Hughes Aircraft Company’s GPS Aided Inertial Navigation System (GAINS) served as the navigator for the SM 2 third stage. The GAINS unit combines a low cost strapdown Inertial Measurement Unit (IMU) with an embedded GPS receiver module to provide a robust, low cost means of determining position, velocity, attitude, and time. The Navy LEAP Standard Missile flight tests have proven the robustness and reliability of the GAINS unit, successfully achieving the system requirements in the high dynamic and high altitude environment. This paper summarizes the design considerations and flight test results, highlighting the advantages of the low cost, high accuracy GPS aided inertial navigation solution.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	363 - 371
Cite this article:	Luckau, Alfred, Moore, Todd, Rudolph, Kevin, Ziolkowski, Frank, "Use of the GPS Aided Inertial Navigation System in the Navy Standard Missile for the BMDO/Navy LEAP Technology Demonstration Program," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 363-371.
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