摘要
目前国内建成的CORS系统以提供实时差分服务为主,对于毫米级的后处理,往往因为测站与基站的长距离需要测站长时间的观测,因此限制了CORS的应用拓展。本文通过CORS系统已知精确坐标、观测数据以及基准站间固定基线值,利用最小二乘内插方法,获取网内任意一点的空间相关误差,解决了虚拟基站的GPS观测数据的模拟,实现了CORS系统下测站与虚拟基站的短基线,从而能在短时间获取高精度的测站成果,并在苏州CORS系统下对研究成果进行测试计算及精度分析,得到了该模式下观测时间与定位精度关系的结论。
At present, the built CORS system only provides the real-time differential service. Because of the long-distance between station and base station and needing enough observation time, the application of CORS is limited in the post process with mm level. This research used least-squares interpolation methods to obtain the space-related error of any point within the network, by using accurately known coordinates, as well as the baseline between actual observational data and the base stations in CORS, resolved the simulation GPS observation data by the virtual base station, realized a short baseline between the CORS station and the virtual base station, which could obtain high-precision results in a short time. It also has been tested the accuracy of calculation and analysis in Suzhou CORS, received the conclusion about time and positioning accuracy in this mode. This research has the practical value and significance of the promotion for the applied research on the high-precision fast positioning under different requirements of CORS.
出处
《测绘科学》
CSCD
北大核心
2011年第1期17-19,共3页
Science of Surveying and Mapping
作者简介
陈中新（1974－），男，高级工程师，研究方向为GNSS连续运行参考站系统的建设、应用及相关领域的研发。E—mail：chenzx@sipac．gov．cn
