Research on Clock Bias-based RAIM Algorithm in BDS/GPS Dual-system

Abstract

Clock bias prediction model is established in this paper based on the characteristics of BDS/GPS dual-system, so faulty satellite can be better detected and identified by applying clock bias prediction value into pseudorange equation. Experiments have proved the robustness of this algorithm because fault detection and identification rate is not reduced by additional redundant information in the condition of sufficient available satellites; meanwhile, fault detection and identification rate is significantly improved in the condition of insufficient available satellites.