Analysis of Scattering Properties of Continuous Slow-Release Slicks on the Sea Surface Based on Polarimetric Synthetic Aperture Radar
Analysis of Scattering Properties of Continuous Slow-Release Slicks on the Sea Surface Based on Polarimetric Synthetic Aperture Radar
复制标题
基于偏振合成孔径雷达的海面连续缓释浮油散射特性分析
DOI：
10.3390/ijgi7070237
复制
发表时间：
2018
影响因子：
3.4
通讯作者：
Fan Jianchao
中科院分区：
文献类型：
--
作者：
Li Guannan;Li Ying;Liu Bingxin;Hou Yongchao;Fan Jianchao
本研究利用极化合成孔径雷达（Pol-SAR）研究海面上连续缓释浮油的散射特性。目的是提取和分析连续缓释片的一般偏振散射特性，即，这些浮油由以相当缓慢和相对恒定的速率释放的物质组成，并确定浮油形成过程对这些特性的影响。使用多极化特征参数来自平均相干矩阵，我们发现，与连续缓释浮油的散射机制不同于人为浮油，可能是由于多重散射机制之间发生的厚的光滑层形成的界面。熵（H）和修正各向异性（A12）的组合是识别不同海况下连续缓释浮油的相对稳健的参数，可以作为浮油检测的参考参数。
This study employs polarimetric synthetic aperture radar (Pol-SAR) to examine the scattering properties of continuous slow-release oil slicks on the sea surface. The objective is to extract and analyze the general polarization scattering properties of continuous slow-release slicks, i.e., those slicks that consist of substances released at a fairly slow and relatively constant rate, and to determine the influence of the slick formation process on these properties. Using multi-polarization feature parameters derived from the averaged coherency matrix, we find that the scattering mechanisms related to the continuous slow-release slicks differ from those of anthropogenic slicks, possibly as a result of the multiple scattering mechanisms that occur between the interfaces formed by the thick slick layer. Combinations of entropy (H) and modified anisotropy (A12) are relatively robust parameters for identifying continuous slow-release slicks under different sea conditions, and may serve as a reference parameter for slick detection.