The polarimetric features of oil spills in full polarimetric synthetic aperture radar images
The polarimetric features of oil spills in full polarimetric synthetic aperture radar images
复制标题
全偏振合成孔径雷达图像中溢油的偏振特征
DOI：
10.1007/s13131-017-1065-4
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发表时间：
2017-05
影响因子：
1.4
通讯作者：
Meng Junmin
中科院分区：
文献类型：
--
作者：
Zheng Honglei;Zhang Yanmin;Wang Yunhua;Zhang Xi;Meng Junmin
与单极化合成孔径雷达图像相比，全极化合成孔径雷达图像不仅包含了目标的几何特性和后向散射特性，而且还包含了散射目标的极化特性。因此，极化合成孔径雷达在海面溢油探测中具有更大的优势。特征提取作为溢油检测的关键步骤，直接影响到溢油识别的准确性。首先分析了海洋溢油在全极化合成孔径雷达图像中的极化信息、平均散射角等极化特征。提出了一种新的反映布拉格散射信号与镜面散射信号比例的偏振参数P。为了研究极化特征对溢油观测的能力，基于SIR-C/X-SAR和Radarsat-2获取的全极化SAR图像，对多极化特征进行了系统的比较和分析。实验结果表明，在中低风速条件下，C波段图像比L波段图像更容易检测到溢油。此外，还发现新的偏振参数对海面散射机制很敏感。实验结果表明，在C波段SAR图像中，新的极化参数和基座高度比其他极化参数具有更好的检测效果。
Compared with single-polarized synthetic aperture radar (SAR) images, full polarimetric SAR images contain not only geometrical and backward scattering characteristics, but also the polarization features of the scattering targets. Therefore, the polarimetric SAR has more advantages for oil spill detection on the sea surface. As a crucial step in the oil spill detection, a feature extraction directly influences the accuracy of oil spill discrimination. The polarimetric features of sea oil spills, such as polarimetric entropy, average scatter angle, in the full polarimetric SAR images are analyzed firstly. And a new polarimetric parameter P which reflects the proportion between Bragg and specular scattering signals is proposed. In order to investigate the capability of the polarimetric features for observing an oil spill, systematic comparisons and analyses of the multipolarization features are provided on the basis of the full polarimetric SAR images acquired by SIR-C/X-SAR and Radarsat-2. The experiment results show that in C-band SAR images the oil spills can be detected more easily than in L-band SAR images under low to moderate wind speed conditions. Moreover, it also finds that the new polarimetric parameter is sensitive to the sea surface scattering mechanisms. And the experiment results demonstrate that the new polarimetric parameter and pedestal height perform better than other polarimetric parameters for the oil spill detection in the C-band SAR images.
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影响因子：
8.2
作者：
S. Skrunes;C. Brekke;T. Eltoft
通讯作者：
S. Skrunes;C. Brekke;T. Eltoft
影响因子：
8.2
作者：
S. Durden;J. V. Zyl;H. Zebker
通讯作者：
S. Durden;J. V. Zyl;H. Zebker
影响因子：
3.4
作者：
Migliaccio, M.;Nunziata, F.;Gambardella, A.
通讯作者：
Gambardella, A.
DOI：
10.1016/j.isprsjprs.2012.12.007
发表时间：
2013-04-01
影响因子：
12.7
作者：
Nunziata, Ferdinando;Gambardella, Attilio;Migliaccio, Maurizio
通讯作者：
Migliaccio, Maurizio
DOI：
10.1109/igarss.2012.6352270
发表时间：
2012-07
期刊：
2012 IEEE International Geoscience and Remote Sensing Symposium
影响因子：
--
作者：
Arnt-Børre Salberg;Ø. Rudjord;A. Solberg
通讯作者：
Arnt-Børre Salberg;Ø. Rudjord;A. Solberg