GPS起算数据兼容性分析

Compatibility Analysis for Starting Data of GPS Network

随着GPS技术的不断成熟,在各种控制网建设中的应用越来越多,若起算数据存在粗差或部分点间相对精度较低时,约束平差后的GPS网点成果精度会急剧下降,达不到预定要求。为此,在GPS控制网约束平差前必须对约束的起算点进行兼容性分析和处理,以达到预期的等级要求。以辽宁工程技术大学校园GPS控制网为实例,应用几种兼容性分析方法,得出了有益结论。

With the rapid development of GPS,it＇s used in more and more control networks. If there＇s gross error in the starting point data,or the relative precision between some control points is lower, the precision will drop suddenly after adjustment with restricted condition. Then we cant achieve the anticipated precision. Therefore,we should make the analysis of the starting point＇s compatibility and process it, so the anticipated order request could be achieved. Based on the GPS network in the Liaoning Technical University, several methods of compatibility analysis were used. A beneficial conclusion is obtained.