城市CORS网络北斗化升级改造关键技术研究

北斗三号卫星发射、组网成功,为城市北斗CORS系统升级改造带来了实质性的建设意义。广州、深圳、中山等城市相继完成了城市级的北斗地基增强系统建设改造,湖北省、广东省、四川省等也完成了省级北斗地基增强服务系统的建设工作。如何充分利用原有CORS资源,完成城市CORS网络北斗化升级改造工作,笔者探讨与总结了结合广州城市CORS网络改造、城市CORS网络北斗化升级改造需要考虑的几个关键因素:一是CORS基准站选型与兼容性问题;二是数据处理中心对多系统数据处理的软件;三是CORS网络如何统一时空基准。经过系统测试,广州城市CORS网络的各项精度指标满足系统改造建设指标要求。

Research on Key Technologies of Urban Beidou CORS Network’s Upgrading

BD-3 satellites has been launched successfully,and has brought substantive construction significance to upgrade and rebuild the CORS system of urban Beidou CORS network. Guangzhou,Shenzhen,Zhongshan and other cities have completed the construction and transformation of the city CORS foundation strengthening system. Hubei,Guangdong and Sichuan provinces have also completed the construction of the provincial Beidou foundation strengthening service system. How to make full use of the original CORS resources to complete the upgrading of urban Beidou CORS network,the author discusses and summarizes several key factors that need to be considered in the upgrading of urban CORS network in Guangzhou. One is the selection and compatibility of CORS reference stations,the other is the multi-system data processing center. Data processing software,three is how the CORS network unified the spatiotemporal benchmarks. Through the system test,the precision index of Guangzhou CORS network meets the requirement of system reconstruction and construction.