本文论述了建立利用多种资料进行地形图数字化快速修测系统的基本原理及其基本功能。
This paper focuses on the fundamental principle of establishing the quick digitizing revision system with much refresh information. discusses the fundamental function of this system.
为了实现测绘成果资料的科学化管理，建立了西山矿区地形图管理系统，以2 GB的数字化地形图创立了一个西山煤电集团公司规范的数据库。
This paper states the geographical map management system of Xishan coal mining area. Xishan coal electricity group company builds the company standard data-base for 2GB digital geographical map.
数字高程模型(dem)是记录地形起伏变化的资料，当中蕴含着各种地形地貌的结构信息，其中包括山谷线和山脊线。
Digital Elevation Model (DEM) records topographic fluctuation changes and in which it contains various topographic construct information including valley lines and ridge lines.
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