Abstract:By analyzing and comparing the MEO satellite pseudorange multipath effect from different satellite system to determine the existence of Beidou satellite pseudorange multipath deviation; further analysis of the BDS three kind of satellite’s pseudorange multipath effect found that IGSO satellite and MEO satellites exist obvious multipath deviation; selecting piecewise linear approximation and piecewise polynomial fitting two methods to build the empirical formula to correct Beidou satellite pseudorange multipath deviation and compared the effects of two methods; by analyzing the characteristics of the MW series and the results of PPP before and after the error correction to demonstrate the effectiveness of empirical formula.