Enhanced Single Frequency GPS Receiver Performance for Surveying Applications

Bryan Townsend

Abstract:	The error budget for GPS carrier phase and Pseudorange measurements is reviewed in terms of the single frequency user. Differential techniques significantly reduce or elimi- nate most GPS measurement biases and are widely used in surveying applications. Also, recent improvements in receiver design have made it possible to measure the C/A code Pseudorange at the 10 cm level of accuracy. The error due to multipath remains as the major bias effecting Pseudorange and carrier phase measurements. A tech- nique for improving receiver performance by reducing the C/A code Pseudorange error due to multipath is presented. The benefits of employing this technique in surveying applications is investigated in two ways. The first is to explore the effect it will have on differential Pseudorange positioning accuracy andimplicitly real-timeDGPS. Sec- ondly, the effect on time to convergence for rapid static and ambiguity on the fly techniques is also investigated.
Published in:	Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993) September 22 - 24, 1993 Salt Palace Convention Center Salt Lake City, UT
Pages:	1091 - 1091
Cite this article:	Townsend, Bryan, "Enhanced Single Frequency GPS Receiver Performance for Surveying Applications," Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993), Salt Lake City, UT, September 1993, pp. 1091-1091.
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