Improved RLS positioning algorithm for satellite navigation systems

The calculating algorithm of the receiver of satellite navigation systems has important effect on positioning accuracy. In this paper, the novel Weight Least Square (WLS) by weighting processing for Recursive Least Square (RLS) algorithm is proposed to improve the positioning accuracy of the receiver. The associated weight of the proposed algorithm exploits the elevation angle to make the satellite data of larger elevation play a more important role in the application of WLS. The performance comparison between the proposed algorithm and RLS are given by numerical simulations. Simulation results show that the improved algorithm can effectively eliminate some error factors and improve the accuracy of positioning.