基于Global Mapper的DEM坐标系统转换  

DEM Transformation from 54' Beijing to WGS-84 with Global Mapper

作　　者：方青 蒋丹妮 聂怀昌 付浩 

机构地区：[1]西安测绘总站,陕西西安710054

出　　处：《测绘与空间地理信息》2014年第5期153-155,共3页Geomatics & Spatial Information Technology

摘　　要：数字高程模型(DEM)作为重要的测绘成果基础数据,在道路规划、城市建设等国民经济以及国防领域有着重要的作用,但是,由于DEM生产过程中,所用的坐标系不尽相同,在DEM实际使用中存在诸多不便。本文首先简要介绍常用坐标系及坐标系转换的概念,然后通过利用Global Mapper软件实现DEM数据坐标系转换,并对转换结果进行精度统计分析,为DEM在实际使用中坐标系转换提供借鉴。As a basic product of surveying and mapping,DEM plays an important role in national economy and national defense. Generally produced in one coordinate system,DEM can hardly be reused in another system. The present study develops a method which transforms DEM from 54＇Beijing coordinate to WGS-84 coordinate with Global Mapper. The present proposed method has been proved to be able to meet the accuracy standards and might possibly be useful in DEM application.

关 键 词：数字高程模型 坐标系转换 精度检测 

分 类 号：P208[天文地球—地图制图学与地理信息工程]