基于区域椭球法的似大地水准面精化研究与实践  

Research and Application of Geoid Refinement Based on Regional Ellipsoid Method

作　　者：杨志强[1] 计国锋 

机构地区：[1]长安大学测绘与空间信息研究所,陕西西安710054

出　　处：《现代测绘》2014年第3期3-5,共3页Modern Surveying and Mapping

摘　　要：GPS技术已经非常成熟,但是GPS高程属于大地高系统,而我国实际水准数据采用的是正常高系统。导致GPS高程不能直接运用,降低了GPS数据的利用效率。本文应用区域椭球的定位定向拟合方法,通过对椭球的定向进行调整,以消除椭球面相对于投影面的倾斜异常,并应用软件实现该转换。经在某工程应用中对比,得出区域椭球法具有可观的应用前景。GPS technology has been very mature ,but GPS elevation belongs to the Geodetic height system ,and our actual level of data is in normal system .GPS height can not be directly led to the use of GPS ,which the efficiency of GPS data .This paper applicate area location and orientation ellipsoid fitting method ,by the ellipsoid orientation to eliminate the ellipsoid surface with respect to the projection plane tilt anomalies ,and application software to achieve this conversion .After a comparison in a project ,draw Regional ellipsoid method has considerable potential applications .

关 键 词：区域椭球法 似大地水准面精化 椭球定位定向 GPS高程 

分 类 号：P226[天文地球—大地测量学与测量工程]