PERFORMANCE EVALUATION OF GPS SINGLE-EPOCH ON-THE-FLY AMBIGUITY RESOLUTION

Y. M. Al-Haifi, S. J. Corbett, and P. A. Cross

Peer Reviewed

Abstract: GPS applications that require precise phase solutions in difficult environments, where loss of lock is likely, would benefit from instantaneous (single-epoch) phase integer ambiguity resolution. Among these applications are aircraft positioning and attitude determination during a photogrammetric flight, engineering surveying, and large-scale mapping. This paper reviews current GPS on-the-fly (OTF) techniques; a single-epoch ambiguity resolution approach is discussed in detail. Test results from 48 h of static data and 105 min. of kinematic data are presented. Results are also provided to demonstrate the ability of the algorithm to determine the attitude of a platform. Comparison of the technique’s performance with that of commercial software demonstrates subcentimeter precision results all of the time (100 percent success), provided that at least five satellites are available and multipath errors are small.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 44, Number 4
Pages: 479 - 488
Cite this article: Al-Haifi, Y. M., Corbett, S. J., Cross, P. A., "PERFORMANCE EVALUATION OF GPS SINGLE-EPOCH ON-THE-FLY AMBIGUITY RESOLUTION", NAVIGATION, Journal of The Institute of Navigation, Vol. 44, No. 4, Winter 1997-1998, pp. 479-488.
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