Fast integer ambiguity resolution in carrier phase differential GPS

摘要

In this paper we propose a method to estimate the integer ambiguity by applying the H{sub}∞ filter, specially for the carrier phase differential method. This positioning method is based on measuring the distance between the receivers and the satellites using the carrier phase of the satellites. Generally, measuring the distance 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, we combine, in this paper, one of these method called "LAMBDA (Least squares AMBiguity Decorrelation Adjustment)" with the H{sub}∞ filtering technique. Finally, the experimental results by using real receiver data obtained at static points are shown.