GPS网中基准点的数量及位置分布对精度的影响分析

The Analysis of Precision Impact of Datum Points Quantlty and Position Distribution on GPS Network

GPS网中,基准点的数量、组合方式及其分布位置都将影响到GPS网的定位精度,不合理的组合和分布方式也会影响GPS网固有的高精度。为了获取高质量的GPS定位成果,布设高等级控制网时必须要科学地选择基准点的数量及其分布,以便找到最佳组合方案。通过工程实例,分析了GPS网中基准点组合及分布方法,得出了相关结论。

In GPS network, the reference points quantity,combination metnoa ana distributing tion affect the accuracy of GPS positioning result. The unreasonable combination and distribution way will affect the GPS net inherent high accuracy. In order to acquire result of height quality, it is necessity scientific to select the reference points quantity and distribution when build high-grade control net, so that we can find out the optimal combination plan. The reference points combination and distribution method are introduced in this paper, and drawn the related conclusion by the example in the GPS network.