Abstract BDS Ground-based Augmentation System(GBAS) is an important infrastructure to promote high-precision BDS+ applications. For the first time, this paper studies the positioning performance of three nationwide GBASs: Qianxun, Sixents Technology and China Mobile. Through the analysis of two 8-9-hour observation sessions on July 21 and 22, 2021, we infer: 1) Both Qianxun SI and China Mobile support BDS-2 triple-frequency signals and BDS-3 dual-frequency signals(B1I and B3I), whereas Sixents Technology supports BDS-2 and BDS-3 dual-frequency signals(B1I and B3I); 2) All three BDS GBASs can provide 100% data availability; 3) Static baseline results show a <2×10-6 relative error of the closed loop with the three virtual base stations; 4) Single-epoch RTK results show that all three BDS GBAS can provide less than 3/9 mm horizontal/vertical precision. However, cm-dm level positioning bias exists among different BDS GBASs. As the result, it is not recommended to use inconsistent BDS GBASs in a single RTK task.
SHI Junbo,OUYANG Chenhao,YUE Jinguang et al. High-Precision Positioning Service Performance Analysis of Three BDS Ground-Based Augmentation Systems[J]. jgg, 2022, 42(7): 712-715.
SHI Junbo,OUYANG Chenhao,YUE Jinguang et al. High-Precision Positioning Service Performance Analysis of Three BDS Ground-Based Augmentation Systems[J]. jgg, 2022, 42(7): 712-715.
