摘要
随着全球定位系统GPS高程测量技术的发展和EGM(Earth Gravitational Model)模型精度以及分辨率的不断提高,基于少量水准点实现区域GPS大地高转正常高成为可能。本文提出一种基于EGM2008模型,利用多面函数法来实现高程拟合的方法。结合咸阳北部某区域实验数据,采用上述方法完成区域内高程拟合,结果表明,该方法符合精度达到3 cm,满足大比例尺地形图测图精度要求。
With the development of the global positioning system GPS height measurement technology and the continuous improvementof the accuracy and resolution of the EGM （Earth Gravitational Model） model, it is possible to achieve geodetic height turn to normalheight based on a small amount of benchmark. This paper proposes a method based on the EGM2008 model to achieve height fitting using the polyhedral function method. Combined with the experimental data of a certain area in northern Xianyang, the above methodwas used to complete the regional height fitting. The results showed that the external accuracy of the method reached 3cm, which meetsthe accuracy requirements for large-scale topographic map mapping.
作者
杨沛旺
徐萌
罗梦
李孝玲
YANG Peiwang;XU Meng;LUO Meng;LI Xiaoling(Heilongjiang Institute of Geomatics Engineering,Harbin 150081,China)
出处
《测绘与空间地理信息》
2018年第10期153-155,共3页
Geomatics & Spatial Information Technology
