Study on Multipath Effect of GEO Satellite in BeiDou Navigation Satellite System

摘要

For BeiDou navigation satellite system, multipath fading from geostationary Earth orbit (GEO) satellites constraints BeiDou receiver to provide a high-precision positioning service, which is not negligible. By designing multipath fading mathematical model, the mechanism of multipath fading is analyzed. This paper proposes a method, by analyzing the fading trend of the first nulling point and second nulling point of Kepler multipath fading (KMPF) factor, which can reflect variation trend of the multipath error of GEO. Finally, the simulation results verify that the KMPF factor provides an important method to analyze the GEO multipath errors.