Study of Receiver Autonomous Integrity Monitoring Algorithm

The receiver autonomous integrity monitoring (RAEM) uses the redundant measurements to detect and exclude fault. The probability of missed detection is high when using the current RAIM algorithm in fault detection. An improved RAIM algorithm which can reduce the probability of missed detection is presented in this paper. The approach of fault detection and identification based on least squares residuals method is studied. The experimental results in a certain type of receiver indicate that this algorithm is effective.