Test Results of GPS Integration With Carrier Aircraft Inertial Navigation System (GAINS)

Kevin L. Grimes

Abstract:	The Carrier Aircraft Inertial Navigation System AN/ASN-130A (CAINS-IA) and the AN/ASN-139 (CAINS-II) are the Navy standard Inertial Navigation Systems (INS) used in the F/A-18 J&v-8Br and EA-6B aircraft. The CAINS-IA is a dry-tuned mechanical gyro based system, and the CAINS-II is a strapdown ring laser gyro based system. The Navy INSs have been integrated and tested with the Rockwell-Collins Global Positionina S&stem Receiver R-2332/AR IGPS RCVR-3A). This-paper will primarily discuss results from CAINS-IA/II flight testinq with closed-loop GPS aiding as specified in -ICD-GPS-063, and CAINS-IA/II testing of at-sea alignments with shipborne Dual Mini-Inertial Navigation System (DMINS) damped with GPS data. Flight testing was performed in a McDonnell-Douglas test aircraft, and in an Air Force C-141 aircraft at Holloman AFB, New Mexico. These test results demonstrate the benefits of GPS aiding to CAINS during in flight alignment, and for navigation accuracy. This paper includes a description of the GPS/CAINS system architecture, integration approach, configuration, and interfaces. The primary mode of CAINS-IA/II is hybrid navigation.
Published in:	Proceedings of the 46th Annual Meeting of The Institute of Navigation (1990) June 26 - 28, 1990 Atlantic City, NJ
Pages:	15 - 21
Cite this article:	Grimes, Kevin L., "Test Results of GPS Integration With Carrier Aircraft Inertial Navigation System (GAINS)," Proceedings of the 46th Annual Meeting of The Institute of Navigation (1990), Atlantic City, NJ, June 1990, pp. 15-21.
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