IGS基准站在高精度GPS数据处理中的应用

摘要

The precision of GPS control network is affected by the quality of net configuration when we process GPS control network observation data of high precision based on the mode of continuous operational base station. The net configuration will be bad if the distribution of domestic base station is non - uniformed or the number of base station selected is not enough. We select some IGS base station properly according to the distribution of IGS base station so that the precision of GPS control network will be improved obviously. The paper takes Xisha - Nansha's GPS data of 927 surveying engineering project as the example and selects the IGS base station to form better net configuration. It improves the precision of network consumedly and obtains the ideal position precision.%处理基于连续运行基准站的作业模式下高精度GPS控制网观测数据时,因国内网络工程基准站分布不均或选取的观测数据缺失造成网形结构较差的情况下,控制网的精度就会受到较大的影响.根据IGS基准站分布情况,适当选取部分基准站参与控制网的数据处理,能够明显改善控制网精度.本文以927工程西沙-南沙测区数据处理为例,采用IGS基准站以达到较好的网形结构,大幅度的提升了控制网精度,获取了较为理想的点位精度.