ZHBDCORS Multi-GNSS数据质量分析

Multi-GNSS Data Quality Analysis of ZHBDCORS

在北斗导航卫星系统(BeiDou navigation satellite system,BDS)迈进全球服务之际,对珠海市北斗连续运行基准站(Zhuhai BeiDou continuously operating reference station,ZHBDCORS)系统2014年以来积累的全球导航卫星系统(global navigation satellite system,GNSS)连续观测数据进行质量检核,分析其质量变化原因,评估系统的BDS支持度。结果表明,ZHBDCORS站点接收机及解算软件均不可跟踪BDS-3信号,且未完全跟踪BDS-3卫星播发的BDS-2信号;部分基准站受观测环境影响,数据完整性差,多路径误差明显,应考虑迁站升级;同等观测条件下,BDS呈现更强的抗遮挡能力。

As BeiDou navigation satellite system(BDS)starts providing full-scale global services,we check the accumulated global navigation satellite system(GNSS)data from Zhuhai BeiDou continuously operating reference station(ZHBDCORS)since 2014,and analyze the factors affecting the data quality to evaluate the BDS support of the system.The results show that the receivers and computing software can’t track BDS-3 signals and can’t completely track BDS-2 signals emitted by BDS-3 satellites.Several reference stations are affected by the observation environment,resulting in poor data integrity and obvious multi-path error.So the relocation and upgrading should be considered.Under the same observation environment,BDS has stronger anti-occlusion ability.