| 时序差分雷达干涉中永久散射体的自动探测 |
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| 引用本文： | 罗小军,黄丁发,刘国祥.时序差分雷达干涉中永久散射体的自动探测[J].西南交通大学学报,2007,42(4):414-418. |
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| 作者姓名： | 罗小军 黄丁发 刘国祥 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目（40474003,40374008）;教育部优秀教师资助计划（2003109）致谢：感谢欧洲空间局（ESA）为本课题研究提供的相关SAR影像和软件. |
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| 摘 要： | 为了有效探测时序差分雷达干涉中的永久散射体,考虑永久散射体对雷达波的强反射特性和散射的稳定性,提出了探测永久散射体的振幅信息双阈值法.该方法根据振幅阈值选取具有强反射特性的点作为永久散射体候选点,然后根据振幅离差阈值,选取散射特性稳定的候选点作为永久散射体.利用上海地区的26幅ERS-1/2 C波段SAR(合成孔径雷达)图像进行了实验,证明该方法是有效和可靠的.
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| 关 键 词： | 永久散射体 合成孔径雷达干涉 探测 振幅 |
| 文章编号： | 0258-2724（2007）04-0414-05 |
| 修稿时间： | 2006-10-11 |
Automated Detection of Permanent Scatterers in Time Serial Differential Radar Interferometry |
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| LUO Xiaojun,HUANG Dingfa,LIU Guoxiang.Automated Detection of Permanent Scatterers in Time Serial Differential Radar Interferometry[J].Journal of Southwest Jiaotong University,2007,42(4):414-418. |
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| Authors: | LUO Xiaojun HUANG Dingfa LIU Guoxiang |
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| Institution: | School of Civil Eng. , Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | In order to effectively detect permanent scatterers(PSs) in time serial differential radar interferometry,a method,named amplitude information dual-threshold approach(AIDTA),was proposed based on the characteristics of strong reflection and stable backscattering of PS to radar waves.With this method,those points with strong reflection are firstly selected as permanent scatterer candidates(PSCs),and then PSs are taken out from the PSCs with stable backscattering.The proposed method has been proved effective and reliable by an experiment with 26 ERS-1/2 C-band synthetic aperture radar(SAR) images of Shanghai. |
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| Keywords: | permanent scatterer synthetic aperture radar interferometry detection amplitude |
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