| 不同精度DEM流域地形特征提取分析及坡度误差控制研究 |
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| 引用本文： | 秦福来,王晓燕,窦培谦,王丽华. 不同精度DEM流域地形特征提取分析及坡度误差控制研究[J]. 国土资源遥感, 2005, 0(4): 56-59 |
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| 作者姓名： | 秦福来 王晓燕 窦培谦 王丽华 |
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| 作者单位： | 首都师范大学资源环境与旅游学院,北京,100037 |
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| 基金项目： | 北京市科技新星计划（编号：953810300）和首都师范大学学生科研基金（编号：222084）资助. |
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| 摘 要： | 以北京密云水库牤牛河流域为试验区,对该流域4种精度DEM提取的流域地形值进行分析,并基于此对不同精度DEM所提取的坡度值进行了误差量化控制,运用曲线回归方法,建立了坡度损失拟合方程系.试验证明,该方法对坡度误差控制较好,具有较大的应用价值.
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| 关 键 词： | DEM 精度 地形特征 坡度误差控制 |
| 文章编号： | 1001-070X(2005)04-0056-04 |
| 收稿时间： | 2005-01-18 |
| 修稿时间： | 2005-04-27 |
AN ANALYSIS OF THE WATERSHED TERRAIN FEATURES DERIVED FROM DEMS WITH DIFFERENT PRECISION AND A STUDY OF THE SLOPE ERROR CONTROL |
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| QIN Fu-lai,WANG Xiao-yan,DOU Pei-qian,WANG Li-hua. AN ANALYSIS OF THE WATERSHED TERRAIN FEATURES DERIVED FROM DEMS WITH DIFFERENT PRECISION AND A STUDY OF THE SLOPE ERROR CONTROL[J]. Remote Sensing for Land & Resources, 2005, 0(4): 56-59 |
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| Authors: | QIN Fu-lai WANG Xiao-yan DOU Pei-qian WANG Li-hua |
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| Abstract: | In this paper, the authors have analyzed the effects of different precisions on the watershed terrain features derived from DEMs and quantitatively studied the error of slope. As an example of Mangniuhe watershed in Miyun reservoir, this paper analyzed the terrain features derived from DEMs with different precisions, and made error control on the value of slope derived from different precisions of DEM. The curve estimation regression method was used to formulate the equations of slope losses and fitting. Tests show that this method can better control the error, thus deserving wide application. |
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| Keywords: | DEM Precision Terrain features Slope error control |
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