数字高程模型(DEM)成果裁切探讨

Digital Elevation Model( DEM) to Investigate the Results of Cutting

随着计算机技术及测绘产品的不断发展,数字高程模型(DEM)已成为地理信息空间系统和"数字地球"的重要组成部分。在测绘技术蓬勃发展的今天,数字高程模型(DEM)的生产已成为各生产部门较关注的问题之一,特别是近年来数字龙江地理空间框架建设一期工程对数字高程模型(DEM)产品成果的要求有很大提高,数字高程模型(DEM)成果的裁切也显得尤为重要,本文从工作中遇到的DEM成果裁切问题入手,结合笔者多年的测绘生产经验,研讨DEM成果裁切问题。

With the continuous development of computer technology and mapping products , digital elevation model （ DEM） has be-come more and more important part of spatial geographic information system and the “digital earth”.In the vigorous development of Surveying and mapping technology today , digital elevation model （DEM ） production has become one of the production department , especially in recent years , the construction of digital geo spatial framework of the Longjiang one phase of the project of digital elevation model （ DEM） product requirements are very high, the digital elevation model （ DEM） results of cutting is also very important , start-ing with the DEM results from the cutting problems encountered in the work , and combining the years of Surveying and mapping pro-duction experience ,research results of DEM cutting problem .