基于平面Delaunay三角网的多基站差分GPS数据处理方法

Method for Multi-datum Basement DGPS Data-process Based on DTIN

单基站差分GPS模式的结构和算法较为简单,其局限是要求动态站和基准站具有较强的误差相关性,一般要求两者之间的距离不能超过35km,否则精度很难满足要求,多基站差分GPS利用基准站均匀的空间分布和精确估计的基准站间的空间相关误差,最大程度的消除了基准站到动态站基线的空间误差,本文基于平面Delau-nay和重心基准原则的最佳三角网选择,对多基站差分GPS数据处理方法进行了分析。

The olo-datum basement DGPS is easy in fracture and arithmetic,but it demand powerful error-correlation for basement and dynamic station,which always need the distance between basement and dynamic station less than 35 kilometers.Otherwise,the accuracy is difficult to meet requirements.Multi-datum basement DGPS use the uniform spatial distribution of basement,and accurate estimate of the basements＇ space-related error to eliminate the space station-related errors on the baseline from basement to dynamic station.Based on the optimal TIN selection of plane delaunay and the principle of cg benchmark,we analyze the data processing method of multi-datum basement DGPS.