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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Identification of Coherent Scatterers in SAR Images Based on the Analysis of Polarimetric Signatures
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Identification of Coherent Scatterers in SAR Images Based on the Analysis of Polarimetric Signatures

机译：基于极化特征分析的SAR图像相干散射体识别

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摘要

In this letter, a new method of identification of coherent scatterers (CSs) in the quadpolarimetric synthetic aperture radar (SAR) data is introduced. The proposed method is based on the analysis of polarimetric signatures. The polarimetric signatures computed from real SAR data were compared with the polarimetric signatures of four canonical objects: trihedral, dihedral, left helix, and right helix. These canonical objects represent basic scattering mechanisms of single bounce, double bounce, and helix scattering. The obtained map of CSs was analyzed and compared with optical images of the studied region and with the map of polarized point scatterers obtained using the method proposed by S. R. Cloude. The developed method of the identification of CSs based on the polarimetric signature analysis gave promising results. It enables not only an accurate identification of the CSs but also a determination of the type of scattering mechanism that is characteristic for each of them.
机译：在这封信中，介绍了一种识别四极化合成孔径雷达（SAR）数据中相干散射体（CS）的新方法。所提出的方法是基于对极化特征的分析。将根据实际SAR数据计算出的极化特征与四个规范对象（三面体，二面体，左螺旋和右螺旋）的极化特征进行比较。这些规范的对象表示单次反射，两次反射和螺旋线散射的基本散射机制。分析获得的CS的图，并将其与研究区域的光学图像以及使用S. R. Cloude提出的方法获得的偏振点散射器的图进行比较。基于极化特征分析的CS的鉴定方法得到了令人满意的结果。它不仅能够准确识别CS，而且还能确定每种散射特征的散射机制类型。

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