摘要
西南边境地区地形复杂、山高坡陡、交通不便,采用常规的水准测量方法测量极为困难。本文引入最新的EGM2008地球重力场模型用于西南边境地区的GPS高程拟合,并探讨与分析了基于EGM2008地球重力场模型的高程拟合精度。本文以云南省"兴地睦边"农田整治重大项目中的某高山地测区为例,结合常规高程拟合数学模型与EGM2008地球重力场模型,建立区域似大地水准面精化模型进行GPS高程拟合,其结果与常规高程拟合数学模型的结果进行对比分析。
Based on complex terrain,high mountains and steep slopes,inaccessible in the Southwest border region,the conventional method of leveling measurement is extremely difficult. This paper introduced the latest EGM2008 Earth gravity field model for GPS elevation fitting in the southwest border region,and explored and analyzed elevation fitting accuracy based on EGM2008 Earth gravity field model. Through taking one alpine survey area of the ＂ develop the local economy and harmony border area＂ major farmland renovated project in Yunnan as example,this paper combined with conventional height fitting mathematical models and EGM2008 Earth gravity field model,established regional quasi-geoid refinement model to GPS elevation fitting,the results were compared with conventional height fitting mathematical model results.
出处
《测绘与空间地理信息》
2015年第4期177-179,181,共4页
Geomatics & Spatial Information Technology
