GPS高程拟合方法在工程中的应用  

Application of GPS Height Fitting Method in the Practical Project

作　　者：简程航 雷坤超[2] 马静[1] 林沛[2] 

机构地区：[1]北京市地质工程勘察院,北京100048 [2]北京市水文地质工程地质大队,北京100195

出　　处：《城市地质》2014年第1期50-53,共4页Urban Geology

基　　金：北京市岩溶水资源勘查评价工程;项目编号:BJYRS-ZT

摘　　要：GPS测量技术已日趋成熟和完善,但其在平面测量中的精度高,高程测量中精度低的特点也越来越受到关注。本文结合实际工程项目对GPS高程拟合方法进行分析,重点对平面拟合法与曲面拟合法进行了应用实例分析及精度评定,探讨了已知点选取的位置、数量等因素对精度的影响。通过实例结果分析表明,在本区域GPS高程拟合中,两种方法均能满足精度要求,且曲面拟合精度更优。GPS survey technology has been mature and perfect with the higher precision in the plane survey, but with the lower precision in the height survey. Based on the study on the GPS height fitting method in the practical project, this paper focused on analysis of the plane fitting method and curve-surface fitting method in the practical project, and evaluated the precision of the two methods; then study the location of the selected survey points, and numbers of the points etc how to affect the survey precision. The study result shows that the two fitting methods can meet the precision requirements for the practical project, and curve-surface fitting method has the higher precision.

关 键 词：GPS高程拟合 平面拟合 曲面拟合 

分 类 号：P228.49[天文地球—大地测量学与测量工程]