Ambiguity Resolution While Moving - Experimental Results

Ronald R. Hatch

Abstract:	A number of methods for resolving the whole-cycle ambiguities of carrier phase have been described in the literature. For “at sea” and “in flight” applications, those techniques which can be used while the host vehicle is underway are of particular interest. In this paper results using the “ambiguity search” technique are described. It was previously claimed that, using this technique, the ambiguities could be resolved almost instantaneously under the right conditions. In this paper the performance is studied when the conditions are far from optimum. Single-frequency receivers are used, and only five or six satellites are tracked simultaneously. Even under these conditions, the performance is adequate for some applications. The computational time required to search through the potential solutions probably rules out single-frequency receivers for real time applications; but, for post-processing applications which involve reasonably short distances, single-frequency receivers may suffice. The tropospheric refraction effects can be a significant error source for aircraft applications.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	707 - 714
Cite this article:	Hatch, Ronald R., "Ambiguity Resolution While Moving - Experimental Results," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 707-714.
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