Global Positioning Inertial Navigation System Development

Ronald A. Brown, Ronald E. Cox and Robert E. Ebner

Abstract:	It is well recognized that integration of the Global Posi- tioning System (GPS) and an Inertial Navigation System (INS) produces a new system with capabilities exceeding either individual subsystem. The enhanced Global Posi- tioning Inertial Navigation System provides both long- and short-term accurate position, velocity, and attitude informa- tion during periods of significant GPS signal jamming and/or host vehicle high dynamics. Optimum performance dictates that the GPS pseudo-range anddeltarange measure- ments be used directly, rather than a GPS derived position/ velocity solution, as inputs to a single Kalman navigation filter. To circumvent additional security requirements associated with transmitting the corrected GPS pseudo- range and delta range measurements outside the GPS receiverand to providea smaller/lighter system, embedding a GPS receiver within the INS chassis provides a practical Zdlitecture. This paper discusses Litton’s GPINS development activi- ties. There are four major efforts currently underway: 1) LN-93G based on BLG standard navigator, 2) LN-1OOG based on Litton’s next generation RLG, the Zero-lockTM Laser Gyro (ZLGTM), 3) the GPS Guidance Package (GGP) using navigation quality fiber optic gyro (FOG) and micro- machined silicon accelerometer (SiAc) technology, and 4) LN-21OG using Litton’s l”/hr quality FOG and SiAc technology.
Published in:	Proceedings of the 5th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1992) September 16 - 18, 1992 Albuquerque, NM
Pages:	697 - 705
Cite this article:	Brown, Ronald A., Cox, Ronald E., Ebner, Robert E., "Global Positioning Inertial Navigation System Development," Proceedings of the 5th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1992), Albuquerque, NM, September 1992, pp. 697-705.
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