Anti-Multipath Localization Method Based on MEDLL and WLS

Aiming at the influence of multipath effect on positioning accuracy, this paper proposes an anti-multipath positioning method based on MEDLL and WLS. Firstly, a multipath detection index MDCR was proposed based on MEDLL multipath detection method, and its indicator of multipath interference was compared with SAM, CNR, CDCM. Then, combining the correlation coefficients between these four indexes and the pseudo-distance multipath error and the fuzzy comprehensive evaluation method, a WLS localization algorithm based on multipath detection is proposed. Simulation results show that the positioning error of the proposed algorithm is better than that of the weighted positioning algorithm based on elevation Angle in both horizontal direction and 3D position under both static and dynamic multi-path conditions.