Ambiguity Dilution of Precision: Definition, Properties and Application

Peter J.G. Teunissen and Dennis Odijk

Abstract: In this contribution we introduce and analyse a measure for the GPS ambiguity dilution of precision (ADOP). In contrast to the traditional way in which DOP-measures are introduced, our ADOP is defined such that it is invariant for the class of admissible ambiguity transformations, while at the same time it captures both the precision and correlation characteristics of the ambiguities. The ADOP is applicable to every GPS model in which ambiguities appear. For some special cases we also give the ADOP in closed-form. They hold true for the geometry-free GPS model, where we discriminate between the short-baseline case, the medium-baseline case, the long-baseline case, as well as the network case. The properties of the ADOPs will be discussed and their behaviour will be shown by both analytical and graphical means.
Published in: Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997)
September 16 - 19, 1997
Kansas City, MO
Pages: 891 - 899
Cite this article: Teunissen, Peter J.G., Odijk, Dennis, "Ambiguity Dilution of Precision: Definition, Properties and Application," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 891-899.
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