摘要
详细阐述了数字高程模型(DEM)的原理结构,以及作为基础地理信息数据的DEM的意义和作用。同时介绍了哈尔滨市DEM的建立及质量控制。
This paper expounds the principle and structure of Digital Elevation Model(DEM) and its importance and functions as basic geographic information data. DEM building and quality control at Harbin city is introduced as well.
出处
《测绘与空间地理信息》
2007年第2期140-142,共3页
Geomatics & Spatial Information Technology