IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
Integer Ambiguity Estimation by Applying H Filter in Carrier Phase Differential GPS
Kubo YukihiroIto AkihikoSugimoto Sueo
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Keywords: GPS
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2000 Volume 120 Issue 11 Pages 1644-1651

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Abstract

This paper is concerned with the application of the H filtering technique to the carier phase differential GPS positioning. This positioning method is based on measuring the range between the receivers and the satellites using the carrier phase of the satellites.
Generally, measuring the range with the carrier phase measurement involves the ambiguous cycles of the carrier signals. These cycles always take integer numbers, and are called “integer ambiguity”. Although many research activities have been focusing on the estimation of the integer ambiguity based on the least squares criterion, we combine, in this paper, one of these methods called “LAMBDA (Least squares ANIBiguity Decorrelation Adjustment)” with the H filtering technique.
Finally, the experimental results by using real receiver data obtained at static points are shown. The proposed method shows a robustness for uncertainty of the noise statistics.

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