摘要
阐述了构建基于参考椭球面的全球地形数据的意义,介绍了构建全球地形数据的数据源及构建方法,生成了基于参考椭球面的格网大小为2.5′×2.5′全球地形高程数据和密度数据,为椭球面边值问题的深入研究提供了基础数据。
The significance of constructing global terrain gird data based on the reference ellipsoid is presented.The methods and data resources are introduced.The grid data with the size of 2.5′ by 2.5′ for global terrain and density based on reference ellipsoid is produced.It is very useful for us to solve the boundary value problem based on ellipsoid.
出处
《测绘信息与工程》
2011年第2期22-24,共3页
Journal of Geomatics
关键词
参考椭球面
全球地形
边值问题
reference ellipsoid
global terrain
boundary value problem
