GPS Positioning Algorithm by Using H_∞ and Kalman Filters

Abstract

This paper is concerned with the application of the H_∞ and the Kalman filtering techniques to GPS positioning, specially to a recursive estimation algorithm for the static carrier phase differential method. In order to speed up the algorithm and to keep the positioning accuracy, we propose an algorithm utilizing the H_∞ filter in the early stage of the estimation, and then switching to the Kalman filter. Finally, the experimental results by using real receiver data obtained at static points are shown.