国家北斗动态基准服务产品精度分析

Accuracy assessment and analysis of national BeiDou dynamic datum service products

随着中国北斗卫星导航系统(BDS)的快速发展,利用北斗卫星导航系统维持国家动态坐标基准已成为国家基准维护一项基本任务。该文利用中国测绘科学研究院北斗分析中心(CGS)自主研发的多系统GNSS数据处理软件(GPAS),结合国家北斗基准站数据,对动态基准服务产品进行了全面深入的分析。结果表明,利用北斗基准站数据生成的各类动态基准产品,可以满足变形监测等事后毫米级、导航定位亚米级精度需求。

With the rapid development of China BeiDou satellite navigation system(BDS),it has become a basic task to maintain national dynamic coordinate datum by using BeiDou satellite navigation system.In this paper,a multi-system GNSS data processing software(GPAS),developed independently by BeiDou Analysis Center of Chinese Academy of Surveying and Mapping,is used to process IGS,MGEX and national BeiDou GNSS data.Eight types of dynamic reference service products are generated form the data of the BeiDou reference station by GPAS.By a thorough analysis of the dynamic reference service products,it is found that all kinds of dynamic reference products can meet the precision requirements of the millimeter grade for deformation monitoring and sub-meter level for navigation and positioning.