城市坐标基准维持数据处理与稳定性分析研究

Data Processing and Stability Analysis of Maintenance of City Coordinate Datum

CORS系统作为建立和维持区域高精度三维基准的重要基础设施,还需向区域用户提供精确的三维实时定位服务,因此CORS系统基准网自身的稳定性是确保系统正常运行的关键。本文以CORS系统为基础,提出了一套完整的城市坐标基准维持与稳定性分析的方法和流程,并通过武汉市CORS系统基准网数据进行了验证,结果表明了该方法的可行性。CORS系统连续高精度观测数据为地理空间框架的形变分析和城市坐标基础维持提供了先进、高效的手段和方法。

As the main body of realization and maintenance of regional reference frame, CORS networks also provide precise positioning for RTK users. Consequently stability serves the key need for the operation of CORS network. This paper proposes an appropriate strategies for GPS data processing and deformation analysis of maintenance of city coordi- nate datum based on CORS network data,which is proved practical and can reflect the stability of CORS network correct- ly through the dataset from Wuhan CORS network. Results show that the methodology of deformation analysis and data processing based on the regional CORS network data is feasible and effective. It is concluded that high-precision contin- uous tracking data from CORS is a very valuable asset and can provide a technically advanced and cost-effective geosci- entific infrastructure for deformation monitoring analysis.