全球定位系统2024，Vol.49Issue(1)：120-126,7.DOI:10.12265/j.gnss.2023183
北斗观测数据质量及动态PPP性能分析
BDS observation data quality and dynamic PPP performance analysis
摘要
Abstract
In order to analyze the global data quality,dynamic precise point positioning(PPP)performance and performance differences of BeiDou Navigation Satellite System(BDS)in different regions,we select the observation data of a total of 9 Multi-GNSS Experiment(MGEX)continuous tracking stations in 3 different region,using GPS as a reference,and from the satellite visibility,pseudo-range multipath effect,data integrity rate and signal-to-noise ratio(SNR),PPP positioning accuracy and other aspects to analyze the data quality and positioning accuracy of BDS in five aspects.The results show that the satellite visibility of BDS has regional differences,and the multipath effect and SNR ratio do not show regional characteristics.The data quality of BDS-3 is better than that of BDS-2,and the data quality of BDS at different frequency points is also significantly different.Difference,poor data quality at BlI frequency points.The dynamic positioning accuracy of BDS is slightly weaker than that of GPS,and multiple systems have a significant effect on improving positioning accuracy.关键词
北斗卫星导航系统(BDS)/质量分析/信噪比(SNR)/指标评估/精密单点定位(PPP)Key words
BeiDou Navigation Satellite System(BDS)/quality analysis/signal-to-noise ratio(SNR)/index evaluation/precision point positioning(PPP)分类
天文与地球科学引用本文复制引用
何聪聪,王中元,张坦..北斗观测数据质量及动态PPP性能分析[J].全球定位系统,2024,49(1):120-126,7.基金项目
江苏省自然科学基金资助项目(BK20181361) （BK20181361）
