GPS水准高程在大比例地形测量中的精度分析  

Accuracy Analysis of GPS Leveling Height in Large Scale Terrain Survey

作　　者：王利锋[1] 蒋新华[1] 杨晓金[1] 宋光浩[1] 

机构地区：[1]河北省地勘局秦皇岛矿产水文工程地质大队,河北秦皇岛066001

出　　处：《北京测绘》2010年第1期44-45,40,共3页Beijing Surveying and Mapping

摘　　要：在地形测量中,若要利用GPS获得的高程信息,通常要求将其大地高转入到我国常用的正常高系统。基于此,本文简要介绍了高程拟合原理及常用的两种拟合方法,结合实例说明在大比例尺地形图测绘中,GPS水准高程拟合的可行性,并通过两种高程拟合方法的比较,作出相应的精度评价,得出有益的结论和建议。In terrain survey,the GPS geodetic height is usually transformed to the normal height system used in our country in order to utilize GPS height iifformations obtained.Base on this,the paper introduces the theroy about GPS height fitting as well two kinds of common GPS level fitting method ,and proves the feasibility of GPS leveling height fitting based on a real GPS case in large scale terrain survey.By making comparisons on level fitting methods,the author makes corresponding precision evaluation and gives beneficial conclusions and propals .

关 键 词：GPS 水准高程 高程拟合 拟合精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]