提高GPS定位技术高程测量精度的要素及方法  

Elements and Method to Improve GPS Positioning Accuracy of Elevation

作　　者：王炎[1] 

机构地区：[1]江西环境工程职业学院,江西赣州341000

出　　处：《北京测绘》2012年第2期56-58,共3页Beijing Surveying and Mapping

摘　　要：GPS定位技术已经被广泛地运用并发展成为一个真正的三维测量工具,然而,GPS技术的高程精度仍然是GPS定位技术亟待研究和解决的问题,利用GPS定位技术求得的高程是地面点在WGS-84坐标系中的大地高,而目前我国的实用高程系统采用的是正常高。本文通过对GPS定位技术求得的高程进行分析;对GPS定位技术求得的高程方法进行论述;提出了GPS定位技术求得的高程计算方法;解决了GPS定位技术求得的高程异常值,以实现大地高向我国实用高程的转换问题。GPS technology has been widely used and developed into a real 3D measurement tools.However,GPS technology elevation precision is still the GPS positioning key technology to research and solve problems.Using GPS technology values of the elevation is the ground point in WGS84 coordinate system height,presently our country＇s practical vertical system USES is the normal.This paper analyzes the height calculation with GPS,discusses the methods and results.Based on the experiments,this method calculates the elevation abnormal value and solves the problem of elevation transformation.

关 键 词：GPS定位技术 高程精度 高程拟合 水准点 

分 类 号：P228.4[天文地球—大地测量学与测量工程]