A nonlinear method of multipath mitigation for new GNSS signals

摘要

Multipath is one of the major sources of accuracy degradation in Global Navigation System (GNSS). In this paper, a novel multipath mitigation method, which based on a combination of correlation functions and nonlinear algorithm, is proposed. This method could be applied to Binary Offset Carrier (BOC) modulated signals, which are adopted by both GNSS like the modernized Global Positioning System (GPS) and Galileo. Moreover, GNSS receivers could use this method in order to diminish the power of side peaks in autocorrelation function of BOC(n,n) signals while keeping the sharp of main peak. The good performance of the proposed scheme in multipath mitigation has been tested using simulation results.