基于EGM2008的铁路高程拟合应用研究  

Application Study of EGM2008 in Railway Height Fitting

作　　者：李成 LI Cheng(China Railway Design Group Co.,Ltd.,Tianjin 300251,China)

机构地区：[1]中国铁路设计集团有限公司,天津300251

出　　处：《测绘与空间地理信息》2018年第8期183-185,188,191,共5页Geomatics & Spatial Information Technology

摘　　要：铁路勘测中常常采用GNSS高程拟合法来获取点的正常高,GNSS高程拟合方法有很多,本文基于EGM2008重力场模型,从研究曲面拟合入手,分析其拟合精度。得出一些有益结论,为后续工程提供参考。In the railway survey,GNSS height fitting method is often used to get the normal height of the points. There are many ways to fit the GNSS height. This paper is based on the EGM2008 gravity field model,the fitting accuracy is analyzed from the study of surface fitting. Some useful conclusions are drawn to provide valuable experience for the follow-up project.

关 键 词：EGM2008 高程异常模型 高程拟合 

分 类 号：P228[天文地球—大地测量学与测量工程]