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ASTER立体像对提取山地DEM精度研究 被引量:5

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摘要 文中通过实例研究了ASTER立体像对在高山峡谷地区提取DEM的精度。首先简述ASTER的立体像对提取DEM的国内外发展现状,然后针对一处高程变化显著地区在1:10万比例尺地形图采集地面控制点(GCP),用1∶5万精度的DEM作检验,获得GCP范围内高程误差为±20.4m,GCP范围外高程误差为±48.2m,平均误差是±34.3m。这就证明可以在小区域内选取GCP控制点,由ASTER立体像大范围外推生成大范围DEM,而且采用常规的技术手段和普通的商业软件就可实现。该方法提取DEM对于我国地形资料缺乏的西部地区有很强的实用性。
出处 《矿山测量》 2008年第2期34-37,共4页 Mine Surveying
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参考文献14

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二级参考文献34

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