Accuracy analysis of BDS-3 triple-frequency precise point positioning
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摘要: 我国北斗卫星导航系统(BDS)处于最后阶段BDS-3的建设之中,其定位精度一直是国内外研究的热点．本文基于IGS连续跟踪站实测数据,阐述了BDS三频精密单点定位模型,初步对比分析了BDS-2与BDS-3的观测数据质量以及精密单点定位精度．经研究发现,BDS-3数据质量良好,相比BDS-2有所提高,单独利用BDS-3卫星进行精密单点定位精度相比于BDS-2略差,收敛时间也略慢,二者结合下的精密单点定位精度与收敛时间相比单独定位有很大的提升．Abstract: China BeiDou navigation system is in the final stage of BDS-3 construction, and its positioning accuracy has been a hot topic at home and abroad. Based on the measured data of IGS continuous tracking station, this paper expounds the Beidou triple-frequency precise point positioning model, and compares and analyzes the observation data quality of BDS-2 and BDS-3 and the positioning precision. The research found that the data quality of BDS-3 is better, compared with BDS-2. The accuracy of precise point positioning using BDS-3 satellite is slightly worse than that of BDS-2, and the convergence time is slightly slower. Combined BDS-2 and BDS-3, the precision and the convergence time of the precise point positioning is greatly improved compared with the PPP result of BDS-2 only.
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Key words:
- BDS-3 /
- precise point positioning /
- triple-frequency /
- data quality /
- accuracy
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