Reliability Monitoring Algorithm in Multi-constellation Satellite Navigation

Global Navigation Satellite Systems (GNSS), including GPS, BeiDou, GLONASS, Galileo and other systems, are becoming more and more widely used in our today life. As a result, multi-constellation receiver that compatible with more than one system will take the place of single-constellation receiver that only uses GPS or BeiDou system. Reliability monitoring algorithm in single-constellation receiver has some limitations when applied in multi-constellation receiver. Therefore, an enhanced reliability monitoring algorithm based on weighted and statistic schemes is designed for multi-constellation receiver that compatible with GPS and BeiDou in this paper. The experiment results show that the algorithm improves the performance in both static and dynamic scenes, especially about 31 % in static scene than the BeiDou/GPS multi-constellation receiver without it.