提高GPS拟合高程精度的方法探讨  

The Discussion of Improving Accuracy of GPS Fitting Height

作　　者：祁亚科[1] 余力[1] 张亚杰[1] 张柏林[1] 赵越[1] Qi Yake Yu Li Zhang Yajie Zhang Bolin Zhao Yue(First Team of Coalfield Geology Bureau of Henan Province, Zhengzhou Henan 450000, Chin)

机构地区：[1]河南省煤田地质局一队,河南郑州450000

出　　处：《工程地球物理学报》2016年第6期804-807,共4页Chinese Journal of Engineering Geophysics

基　　金：河南省地勘基金项目(编号:豫国土资发[2014]75号)

摘　　要：GPS测量技术在现代测绘工作中发挥着不可替代的关键作用,但是GPS测量直接获取的大地高需要转换成正常高才能在工程中应用。目前将大地高转换为正常高主要采用高程拟合的方式进行,如何提高GPS拟合高程的精度是测绘工作者关注的热点。实验了几种不同的GPS高程拟合方式,将其结果与水准测量结果相比较,证明了合理选点对于GPS拟合高程的精度影响很大,并得到了分区拟合是一种较好的拟合方式的结论。The measuring technique of GPS plays an irreplaceable role in modern surveying and mapping workings,but the geodetic height,obtained directly by GPS must be converted to normal height which can be used in engineering applications.Now we always use the height fitting way in order to convert the geodetic height to normal height,and how to improve the accuracy of GPS fitting height is a hot topic for many surveying and mapping workers.In this paper,the author did several experiments with different ways of GPS height fitting to compare its results with the results of leveling,which prove that choosing reasonably point has a great influence on the accuracy of GPS height fitting,and also get the conclusion that subregional fitting is a good way of fitting.

关 键 词：GPS 拟合高程 分区拟合 

分 类 号：P228[天文地球—大地测量学与测量工程]