Analysis of the BDS-3 Complete System on Positioning Performance in Polar Region

The BDS-3 complete system was officially put into operation on July 31, 2020. This article uses the measured data of international GNSS Monitoring and Assessment System (iGMAS) stations to analyze the basic positioning performance of the BDS-3 complete system in the polar region. It includes multiple evaluation contents such as coverage performance, data quality, user equivalent ranging error (UERE), and positioning performance. Through experimental analysis, it can be seen that the BDS-3 complete system has more than 10 visible satellites in polar region. PDOP value is less than 1.6, and PDOP availability is 100%; BDS-3 data quality is better than BDS-2. The accuracy of BDS-3 B1C uere in polar region is only 0.47 m, and the positioning accuracy of BDS-3 at various frequency in polar region meets the service performance specifications, and the positioning accuracy is better than GPS. Compared with BDS-2, BDS-3 has significantly improved in coverage capability, UERE and positioning accuracy.