An Improvement on the Complete Model-Based Decomposition of Polarimetric SAR Data

An Improvement on the Complete Model-Based Decomposition of Polarimetric SAR Data
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偏振SAR数据基于模型的完整分解的改进

DOI:
10.1109/lgrs.2014.2313955
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发表时间:
2014-04
影响因子:
4.8
通讯作者:
Xie Chunhua
Xie Chunhua
中科院分区:
工程技术2区
文献类型:
--
作者:
An Wentao;Xie Chunhua

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本文提出了一种改进的全极化合成孔径雷达(SAR)三分量模型分解(C3 MD)方法。在分析原始C3 MD中第三分量的散射机制时,使用取向角旋转(OAR)。然而,发现解取向更适合于应用于分析第三分量的散射机制,因为解取向最小化相干矩阵的交叉偏振功率,从而使相干矩阵更接近于表面散射或双反射散射。通过采用去定向代替原C3 MD中的OAR,提出了一种改进的C3 MD算法。E-SAR数据的实验结果表明了改进的有效性。
An improvement on the complete three-component model-based decomposition (C3MD) of polarimetric synthetic aperture radar (SAR) data is proposed in this letter. When analyzing the scattering mechanism of the third component in the original C3MD, an orientation angle rotation (OAR) is used. However, the deorientation is found more suitable to be applied to analyze the scattering mechanism of the third component, because the deorientation minimizes the cross-polarization power of a coherency matrix so as to make the coherency matrix much closer to that of surface scattering or double-bounce scattering. With applying the deorientation instead of the OAR used in the original C3MD, an improved C3MD algorithm is proposed. Experiments with E-SAR data are presented to illustrate the effectiveness of the improvement.
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