摘要
CORS系统具有快速获取高精度坐标等优势,但其建设运营成本较高,一般只覆盖城市地区。精密单点定位技术具有低成本、灵活性高、测量便捷等优势,可应用于无CORS覆盖地区的测绘作业。该文对在线PPP服务系统进行了精度分析,并将其解算的即时坐标成果经框架及历元转换至CGCS2000坐标,与观测点真实的CGCS2000坐标进行了对比分析。结果表明,AUSPOS与PPP服务系统解算的坐标精度基本相当,经框架及历元转换至CGCS2000坐标后的精度为3cm。
The CORS system has the advantages of quickly obtaining high-precision coordinates,but its construction and operation costs are high and it generally only covers urban areas.The precision singlepoint positioning technology has the advantages of low cost,high flexibility and convenient measurement,which can be applied to surveying and mapping operation in CORS-free area.This paper conducts an accuracy analysis on the online PPP service system,converts the real-time coordinate results calculated by it into CGCS2000 coordinates through the frame and epoch,and conducts a comparative analysis with the actual CGCS2000 coordinates of the observation point.The results show that the coordinate accuracy calculated by AUSPOS and PPP service systems is basically the same,and the accuracy after converting to CGCS2000 coordinates by frame and epoch is 3cm.
作者
陈楚燕
崔家武
Chen Chuyan;Cui Jiawu(Guangzhou Urban Planning&Design Survey Research Institute)
出处
《勘察科学技术》
2023年第5期12-16,共5页
Site Investigation Science and Technology
