Evaluation of the World's Smallest Integrated Embedded GPS/INS, the H-764G

David C. Moya and Joseph J. Elchynski

Abstract:	A new class of Ring Laser Gyro (RLG)-based strapdown inertial navigation systems has been established with the advent of Honeywell’s H-764G Integrated Embedded Global Positioning System/Inertial Navigation System (GPWNS). This system takes full advantage of precision pseudo-range and pseudo-range rate data available only from the embedded GPS receiver module which is integrated with the inertial data in a Kahnan filter. This synergistic approach results in superior operation in high dynamic, antenna shading, and jamming environments. As this paper will show, the H-764G successfully demonstrated this means of attaining the goal of low noise, precise navigation operation. Significant advantages exist in the embedded system mechanization when compared to the performance of stand-alone systems. Chief among these advantages is the outstanding performance obtained with fewer than four satellites in view; simplified installation; and reduced size, weight, and power. Through these distinctions, Honeywell has produced an embedded GPWINS that consistently demonstrates a more accurate navigation solution. This paper will serve to document the progressive development of the H-764G GPS/INS through a presentation of a brief system description, a look at the wide range of system applications, a review of a number of key discriminators. and finally, the exhibition of independently acquired test results from the Air Force’s Central Inertial Guidance Test Facility (CIGTF) and the Naval Research and Development division.
Published in:	Proceedings of the 1993 National Technical Meeting of The Institute of Navigation January 20 - 22, 1993 Parc 55 Hotel San Francisco, CA
Pages:	275 - 285
Cite this article:	Moya, David C., Elchynski, Joseph J., "Evaluation of the World's Smallest Integrated Embedded GPS/INS, the H-764G," Proceedings of the 1993 National Technical Meeting of The Institute of Navigation, San Francisco, CA, January 1993, pp. 275-285.
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