Abstract To compare the positioning performance of the new signals and old signals of Beidou-3 satellite navigation system, we conduct a comprehensive evaluation of BDS-3 precise point positioning with new signals B1C/B2a using two-week observation data from 17 MGEX stations. The results show that the accuracy in E, N, U directions of static PPP with BDS-3 B1C/B2a was 1.3 cm, 0.8 cm, and 1.9 cm, respectively, while that of kinematic PPP was 2.6 cm, 1.8 cm, and 4.2 cm, respectively. The static positioning accuracy in U direction showed an improvement of 13.6% compared to the BDS-3 B1I/B3I combination, the accuracy in E, N directions were similar. In the kinematic mode, the accuracy in E, N, U directions were similar, with differences within 1 mm. In terms of three-dimensional(3D) error, BDS-3 B1C/B2a static PPP achieved centimeter-level accuracy within 40 minutes, while kinematic PPP achieved decimeter-level accuracy within 5 minutes. The static PPP with the dual-system BDS-3 B1C/B2a+GPS L1/L2 achieved centimeter-level accuracy in three dimensions within 20 minutes, while the kinematic PPP achieved centimeter-level accuracy within 30 minutes. Comparing with dual-system BDS-3 B1I/B3I+GPS L1/L2, the positioning accuracy and convergence speed are basically the same. Overall, the positioning performance of B1C/B2a frequency is superior to that of B1I/B3I frequency.
WEI Haopeng,XIAO Guorui,ZHAO Dongqing et al. Comprehensive Performance of Beidou New Frequency B1C/B2a Precise Point Positioning[J]. jgg, 2024, 44(6): 572-576.
WEI Haopeng,XIAO Guorui,ZHAO Dongqing et al. Comprehensive Performance of Beidou New Frequency B1C/B2a Precise Point Positioning[J]. jgg, 2024, 44(6): 572-576.