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2009年6月30日,期待已久的ASTER GDEM数据由日本经济产业省(METI)和美国航天局(NASA)共同发布,其空间分辨率达到了1弧秒×1弧秒(约30m×30m),相比2003年NASA发布的SRTM数据有了很大的提高,并且其陆地表面覆盖率也大幅提高,达到了陆地面积的99%。本文介绍了ASTER GDEM的相关特性以及使用程序读取该数据的方法。 更多还原

【Abstract】 On 30th,June 2009,METI and NASA distributed the ASTER GDEM(Advanced Space borne Thermal Emission and Reflection Radiometer Global Digital Elevation Model).The space resolution of ASTER GDEM is 1 arc-sec×1 arc-sec(approximately 30m×30m) and the land surface coverage reached 99%,both have much greater improvement than SRTM which was distributed in 2003 by NASA.This paper introduced characteristics of ASTER GDEM and how to read the data with programming language. 更多还原