Research on a Weighted Least Squares Algorithm in Satellite Positioning

Abstract

In order to overcome the problem of the reliability of the pseudorange observation measurement in the satellite navigation system, the least-squares method used by common navigation receivers cannot solve the problem of the reliability of the pseudorange observation. The concept of weight gives greater credibility to pseudorange observations, allowing more reliable pseudorange observations to participate in the positioning solution algorithm, effectively solving the credibility of pseudorange observations. problem. The experimental simulation results prove that the positioning algorithm proposed in this paper is superior to the traditional least squares positioning algorithm in terms of positioning accuracy, meets the normal satellite positioning requirements, and improves the positioning accuracy by 1.503m.