Comparison of Terrain Representation of SRTM and Topographic Derived DEMs

CAI Qing-hua; YANG Qin-ke

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Comparison of Terrain Representation of SRTM and Topographic Derived DEMs

- Comparison of Terrain Representation of SRTM and Topographic Derived DEMs
- Bulletin of Soiland Water Conservation Vol. 28, Issue 3, Pages: 183-187(2009)
- 作者机构：
  
  西北大学城市与资源学系,陕西,西安,710127
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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CAI Qing-hua, YANG Qin-ke. Comparison of Terrain Representation of SRTM and Topographic Derived DEMs[J]. Bulletin of Soiland Water Conservation, 2009, 28(3): 183-187.
DOI：

CAI Qing-hua, YANG Qin-ke. Comparison of Terrain Representation of SRTM and Topographic Derived DEMs[J]. Bulletin of Soiland Water Conservation, 2009, 28(3): 183-187. DOI：

摘要

数字高程模型是进行地学研究的重要基础数据，SRTM数据是公众可以免费获取的精度达90 m的DEM数据。在ARCGIS软件的支持下，选取典型试验样区，利用1∶5万和1∶10万地形图建立的DEM和1∶25万TINDEM与SRTM数据进行分析，提取坡度和坡长等地形因子，得出SRTM对地形的表达能力。结果认为，SRTM数据在地形表述能力上仍远不如1∶5万的地形图，甚至还不如1∶10万地形图的地形表达能力，但是明显优于1∶25万TINDEM的地形表达能力。

Abstract

Digital Elevation Model(DEM)is the essential data for research on Terrain and SRTM data are the public free access dataset with 90 m resolution.Topographic representations of SR TM and DEMs generated from 1∶50 000

1∶100000

and 1∶250 000 topographic map sare compared and the surface and derived topographic parameters including slope

curvature

streams

and slope length are ext racted.Results show that SR TM data p resent less terrain details on the table capacity than the 1∶50000 topographical map

even not better than the 1∶10000 topographic map

but better than the 1∶250000 TINDEM.

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Related Institution

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