Ambiguity Resolution Without Static Initialization Using a High Performance C/A Code Receiver

M. E. Cannon, G. Lachapelle, and G. Lu

Abstract:	Carrier phase ambiguity resolution without static initialization is investigated using the GPSCardTM, a high performance, single frequency, lo-channel, C/A code receiver. The two unique characteristics of this unit are a lo-cm C/A code accuacy and narrow correlator spacing on the code tracking loops which increases multipath rejection capability. Test results collected with a land vehicle are presented. Code-only DGPS positions are obtained with an accuracy I 1 meter. These positions are used to reduce the size of the search cube and to resolve the ambiguities without static initialization within 1 to 3 minutes when using a 5 Hz carrier tracking bandwidth. A least-squares search technique is used for ambiguity resolution.
Published in:	Proceedings of the 48th Annual Meeting of The Institute of Navigation (1992) June 29 - 1, 1992 ANA Westin Hotel Dayton, OH
Pages:	161 - 166
Cite this article:	Cannon, M. E., Lachapelle, G., Lu, G., "Ambiguity Resolution Without Static Initialization Using a High Performance C/A Code Receiver," Proceedings of the 48th Annual Meeting of The Institute of Navigation (1992), Dayton, OH, June 1992, pp. 161-166.
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