| 一种新的SAR像素偏移量估计流程及其在同震形变监测中的应用 |
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| 引用本文： | 董晓燕,丁晓利,李志伟,王永哲.一种新的SAR像素偏移量估计流程及其在同震形变监测中的应用[J].武汉大学学报(信息科学版),2011(7). |
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| 作者姓名： | 董晓燕 丁晓利 李志伟 王永哲 |
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| 作者单位： | 中南大学信息物理工程学院;香港理工大学土地测量与地理资讯学系; |
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| 基金项目： | 国家自然科学基金资助项目(40974006,40774003,40901172); 国家教育部新世纪优秀人才支持计划资助项目(NCET-08-0570); 湖南省高校创新平台开放研究基金资助项目(09K005); 湖南省科技厅重大专项基金资助项目(2008FJ1006) |
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| 摘 要： | 提出了一种无需外部数据的新同震形变偏移量计算流程。以2003年伊朗巴姆里氏6.6级地震为例,利用两景震前无形变数据证明了新方法的精度较传统方法提高了0.224个像素。利用震前震后两景数据计算了方位向同震形变场,与Okada模型模拟得到的方位向同震形变进行了比较。
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| 关 键 词： | 偏移量 轨道偏移量 同震形变偏移量 强度图相关法 巴姆地震 |
A New Chain for SAR Pixel Offset Estimation and Its Application in Co-seismic Deformation Measurement |
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| DONG Xiaoyan DING Xiaoli, LI Zhiwei WANG Yongzhe.A New Chain for SAR Pixel Offset Estimation and Its Application in Co-seismic Deformation Measurement[J].Geomatics and Information Science of Wuhan University,2011(7). |
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| Authors: | DONG Xiaoyan DING Xiaoli LI Zhiwei WANG Yongzhe |
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| Institution: | DONG Xiaoyan1 DING Xiaoli1,2 LI Zhiwei1 WANG Yongzhe1(1 School of Info-Physics and Surveying Engineering,Central South University,932 South Lushan Road,Changsha 410083,China)(2 Dept.of Land Surveying & Geo-Informatics,The Hong Kong Polytechnic University,Kwloon,Hong Kong) |
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| Abstract: | The traditional methods for estimating pixel offsets of two SAR images use the orbit offsets of several points to fit the orbit offsets of the whole image by using the least squares rule,and then removes them from the total offsets.However,the procedures of data processing are quite complicated.What's more,without GCPS,this method contained many kinds of error sources which lead to low precision.To overcome these limits,this paper presents a new simple data processing chain for calculating co-seismic offset... |
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| Keywords: | offset orbit offsets co-seismic offsets intensity correlation Bam earthquake |
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