| 一种基于高分辨率雷达影像以及外部DEM辅助的复杂地形制图方法 |
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| 引用本文： | 卢丽君,张继贤,王腾. 一种基于高分辨率雷达影像以及外部DEM辅助的复杂地形制图方法[J]. 测绘学报, 2011, 40(4): 459-463 |
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| 作者姓名： | 卢丽君 张继贤 王腾 |
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| 作者单位： | 1. 中国测绘科学研究院,北京,100830
2. 武汉大学测绘遥感信息工程国家重点实验室,湖北武汉,430079 |
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| 基金项目： | 国家863计划(2009AA12Z145); 国家973计划(2007CB714405) |
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| 摘 要： | 为满足在坡度陡、高差大的复杂地形地区高精度DEM制图的需要,在传统的雷达干涉测量技术的基础上,通过引入外部DEM,建立外部DEM模拟相位和干涉解缠相位的对应关系,构建多维线性模型,进行线性回归分析,去除误差相位趋势;同时根据引入的外部DEM估计高程的误差范围,进行高程点的滤波,达到精化DEM的目的,形成最终的DEM产品。该方法已经应用于高分辨雷达影像（COSMO数据）在云南德钦地区DEM地形图的制作,通过GPS数据的验证,其精度达到了国家1∶50 000 DEM制图要求。
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| 关 键 词： | 合成孔径干涉雷达 数字高程模型 DEM精化 |
A DEM Mapping Method Assisted by External DEM with High Resolution InSAR Data in Complex Terrain Area |
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| LU Lijun,ZHANG Jixian,WANG Teng.Chinese Academy of Surveying , Mapping,Beijing ,China,.State key Laboratory of Information Engineering in Surveying,Mapping , Remote Sensing,Wuhan University,Wuhan. A DEM Mapping Method Assisted by External DEM with High Resolution InSAR Data in Complex Terrain Area[J]. Acta Geodaetica et Cartographica Sinica, 2011, 40(4): 459-463 |
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| Authors: | LU Lijun ZHANG Jixian WANG Teng.Chinese Academy of Surveying Mapping Beijing China .State key Laboratory of Information Engineering in Surveying Mapping Remote Sensing Wuhan University Wuhan |
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| Affiliation: | LU Lijun1,ZHANG Jixian1,WANG Teng21.Chinese Academy of Surveying and Mapping,Beijing 100830,China,2.State key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079 |
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| Abstract: | In order to fulfill the request of digital elevation model(DEM) mapping in complex terrain areas with the remarkable height difference and steep slopes,a DEM refinement mapping approach is presented in complex terrain areas with high resolution SAR data.On the basis of interferometric synthetic aperture radar(InSAR) technology,a coarse external DEM is firstly introduced,the one-to-one correspondence between interferogram and external DEM can be determined.Then multiple linear models are established,the tren... |
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| Keywords: | InSAR digital elevation model DEM refinement |
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