摘要
指出地面点的空间位置是用坐标和高程表示的,高程是表示地球上点的空间位置的三要素之一,不同的高程基准面决定了不同的高程系统,介绍了国家高程基准,对大地高、正高和正常高三种高程系统以及三者之间的转换关系进行了分析,以便更好地为工程建设服务。
It pointed out that the spatial site of ground point was expressed with coordinate and height,the height was one of three elements to express earth point spatial site,the different height base level decided different height system.The national height base level was introduced,the geodetic elevation,orthometric and normal height system and their conservation relationship were analyzed,so as to serve for engineering construction better.
出处
《山西建筑》
2010年第3期357-358,共2页
Shanxi Architecture
关键词
高程系统
高程基准面
大地高
正高
正常高
height system
height base level
geodetic elevation
orthometric
normal height
