Performance Analysis of Multi-mode Network RTK and Its Application in Urban Terrain Control Survey
In order to study the RTK positioning performance of multi-mode CORS (Continuously Operating Reference System) net-work based on BDS system, this paper integrates BDS system and GLONASS (Global Navigation Satellite System) system on the basis of GPS (Global Positioning System), and constructs GPS/BDS double star CORS system and GPS/BDS/GLONASS three Star CORS system respectively. By comparing and analyzing the calculation accuracy of the observation data of the double star system and the three star system, it is concluded that the internal coincidence accuracy, external coincidence accuracy and time series accuracy of the double star CORS system are higher than those of the three star system. At the same time, the plane accuracy of the double star system and the three star system is greater than the elevation accuracy. The application of the double star CORS system in urban ter-rain control survey shows that the double star CORS system can improve field work efficiency while ensuring data accuracy.
万方数据
维普
