NovAtel's RT20 - A Real Time Floating Ambiguity Positioning System

Thomas Ford and Janet Neumann

Abstract:	Over the past 10 years, the thrust of many GPS programs has been towards solving the precise positioning problem with a fmed integer carrier solution. Progress has been made in this area, but an uncertain multipath environment and decorrelated ionospheric delays have made this technology problematic for a single frequency receiver. The nature of the solution requires an excess of computing resources and a lot of time, if special initialization methods are not used. NovAtel has developed a high performance floating ambiguity differential positioning package on a single board which promises to be as robust as a differential pseudorange system but approaches the accuracy achievable with a f&d ambiguity single frequency system. The process is described in this paper, including its features, data stream, positioning filters and test methods and results.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1067 - 1076
Cite this article:	Ford, Thomas, Neumann, Janet, "NovAtel's RT20 - A Real Time Floating Ambiguity Positioning System," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1067-1076.
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