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| 东北川岗地形区SRTM数据质量评价* | |
| 引用本文： | 闫业超,张树文,岳书平.东北川岗地形区SRTM数据质量评价*[J].中国科学院研究生院学报,2008,25(1):41-46. |
| 作者姓名： | 闫业超 张树文 岳书平 |
| 作者单位： | 1. 中国科学院东北地理与农业生态研究所,长春,130012;中国科学院研究生院,北京,100049 2. 中国科学院东北地理与农业生态研究所,长春,130012 |
| 基金项目： | 中国科学院知识创新工程项目 |
| 摘 要： | 数字高程模型是支撑全球变化和区域可持续发展研究的重要基础数据。本文针对东北川岗地形特点，选取典型试验区，在ARCVIEW软件的支持下，对SRTM数据与1：5万、1：10万地形图建立的DEM进行了对比分析。认为SRTM数据能够较好地反映出缓坡地区的坡度变化和细小沟谷的形态特征，利用SRTM数据提取的地形指数能较好地体现水系的自然弯曲，展示谷地串珠状的沼泽洼地形态，与实际地貌形态更为接近，其数据描述精度略高于1：5万地形图DEM。 |
| 关 键 词： | SRTM DEM 数据质量 川岗地形 评价 |
| 文章编号： | 1002-1175(2008)01-0041-06 |
| 修稿时间： | 2006年9月15日 |
Evaluation of SRTM Data Quality in Area of undulating hills of Northeast China |
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| YAN Ye-Chao,ZHANG Shu-Wen,YUE Shu-Ping.Evaluation of SRTM Data Quality in Area of undulating hills of Northeast China[J].Journal of the Graduate School of the Chinese Academy of Sciences,2008,25(1):41-46. | |
| Authors: | YAN Ye-Chao ZHANG Shu-Wen YUE Shu-Ping |
| Institution: | 1．Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Science, Changchun 130012, China; 2．Graduate School of Chinese Academy of Science, Beijing, 100049, China |
| Abstract: | Digital Elevation Model (DEM) is essential data for research on global environment change and regional sustainable development. Aiming at the topographic characteristics of undulating hills, using ARCVIEW software, the author selects typical test area and compares SRTM data with the DEM generated from 1:50000 and 1:100000 topographic maps. The result shows that SRTM data can present more detail in gentle slope area and lay out the shape of small channels. Topographic Index extracted by SRTM data is more similar with the actual land surface by giving the natural winding stream and low-lying marshes. Consequently, SRTM data contain more detail than 1:50000 topographically derived DEM. |
| Keywords: | Shuttle Radar Topography Mission Digital Elevation Model data quality undulating-hill landform evaluation |
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