Analysis of a High Performance C/A Code GPS Receiver in Kinematic Mode

M. Elizabeth Cannon and Gérard Lachapelle

Abstract:	The results of a land semikinematic test, conducted under normal operational conditions to assess the performance of a multipath resistant, lo-cm C/A code accuracy, C/A code receiver technology introduced in 1991 , are presented. A semikinematic or stop and go test, where the vehicle stops at selected control points, was conducted to provide an accurate assessement of both the carrier phase and code measurements under static and kinematic conditions. The data was analysed with kinematic software packages developed at The University of Calgary, and used previously to assess other geodetic receivers. The control points calculated with the carrier phase measurements are in agreement at the cm-level with the values determined previously through a conventional static GPS survey. The double difference code noise was found to behave in a quasi-random manner, with an estimated standard deviation of 50 cm, with or without the use of an antenna ground plane to reduce multipath. The effective multipath rejection characteristics of this new receiver type is attributed to the use of a narrow correlator spacing in the code tracking loops. Kinematic positioning tests based on code and carrier phase-smoothed code measurements using the between-receiver single difference technique, which is well suited for real- time applications, resulted in one metre and 50 cm accuracies, respectively, in terms of rms in each of the three coordinates. These accurate results will permit the effective implementation of rapid carrier phase ambiguity resolution techniques for both the static and kinematic case.
Published in:	Proceedings of the 1992 National Technical Meeting of The Institute of Navigation January 27 - 29, 1992 Catamaran Resort Hotel San Diego, CA
Pages:	379 - 389
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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