数字地面模型 meaning in Chinese
digital terrain models
Examples
- Creation of triangulation digital terrain model and its application in alignment design
三角网数字地面模型的生成及其在路线设计中的应用 - ( 1 ) at first , the conception of egis is put forward . and some basic techniques of it are discussed , including the integration of the applied numerical model with gis , the research of creating dem ( digital elevation model ) and the application of dem in ece
本文的主要研究内容是： ( 1 )提出建立工程地理信息系统egis ，并进行一些基本方法的探讨，包括应用模型与gis集成模式的讨论，数字地面模型生成的方法比较和应用。 - Gis ( geographic information systems ) is a computer system with collecting , checking , intergreting and analysing information which is related with interface of earth . digital terrain model display two demission geographic position and relational properts information with digital pattern . dtm is an important component of gis , and is basic of " digital earth "
数字地面模型( digitalterrainmodel , dtm )是地表二维地理空间位置和其相关的地表属性信息的数字化表现，是地理信息系统( geographicinformationsystem , gis )的重要组成部分，是数字地球的基础。 - ( 2 ) discuss how to use the information from rs to distill the environmental geologic factors discuss the method for distill the surface sink , landslip , etc . from dtm , water , residential area , vegetation , gold mine points , gangue warehouse , etc . from spectrum analysis , roads , ground split , falls , etc . from crisp and eye distinguish
（ 2 ）探讨利用遥感信息进行环境地质因素的提取方法对各环境地质要素进行遥感信息的提取，探讨了基于数字地面模型的地面塌陷、崩塌等要素的提取方法；基于波谱分析的水体、居民区、植被、金矿点、尾矿库等要素的提取方法；基于边缘增强、目视判读等方法的线状要素如道路、地裂缝、构造线的提取。 - A digital elevation model ( dem ) is a digital file consisting of terrain elevations for ground positions at regularly spaced horizontal intervals . dem may be used in the generation of three - dimensional graphics displaying terrain slope , aspect ( direction of slope ) , and terrain profiles between selected points
数字高程模型( dem )是反映高程信息的数字地面模型，它是以数字的形式按一定的结构组织在一起、表示实际地形高低起伏和地形大小特征的空间分布模型。