The Study of RAIM Performance by Simulation

Di Ruihui, Beijing University of Aeronautics and Astronautics, China

Authors: Abidat Ahmed I., Cong Li, Tan Zhan Zhong

Using two methods of the parity space algorithm of RAIM technique which are FDI and FDE methods, the simulations of RAIM performance with respect to the bias of the fault satellite have been done for three different flight phases respectively. The simulation results are proposed. Based on the simulation results, each performance of RAIM is analyzed in several respects in detail. According to the analysis of simulation results, the parity space algorithm of RAIM can meet the integrity requirements completely for nonprecision approach, terminal and enroute flight phase. It also indicates that the performance of FDE is better than that of FDI.

Keywords : detection threshold (TD), test statistics (r), horizontal radial positioning error (HRPE), FDI(fault detection and isolation) and FDE(fault detection and exclusion)