Integration of GPS and Strapdown Intertial Subsystems Into a Single Unit

David Buechler, Michael Foss

Abstract:	Most GPS receivers are designed for standalone operation. Single-channel, slow-sequencing receivers are recognized to be lowest cost, but lack dynamic capability, while multiplexed and multichannel designs allow operation during acceleration, but add cost, weight and power. It is also widely recognized that a marriage of &PS data with strapdown inertial data enhances the quality of bath, and many people are looking at integration of available GPS receivers with various available inertial systems. However, direct design at tho outset of a tightly integrated GPS and strapdown INS allows optimization of both for performance and cost. Using this approach, a properly designed slow-sequencing, single-channel receiver, married to a low cost strapdown-inertial unit, provides satellite tracking during 10-g acceleration, very high jamming suppression, improved strapdown inertial outputs, and improved GPS navigation accuracy. Packaging this GPS/I in a single unit reduces software and hardware redundancies, and- results in a very low-cost design.
Published in:	Proceedings of the 43rd Annual Meeting of The Institute of Navigation (1987) June 23 - 25, 1987 Dayton, Ohio
Pages:	113 - 117
Cite this article:	Buechler, David, Foss, Michael, "Integration of GPS and Strapdown Intertial Subsystems Into a Single Unit," Proceedings of the 43rd Annual Meeting of The Institute of Navigation (1987), Dayton, Ohio, June 1987, pp. 113-117.
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