基于GF-3的不同极化方式SAR图像海面油膜识别的比较——以“桑吉”轮事故为例

付弘涛; 秦平

引用本文：

付弘涛,秦平.基于GF-3的不同极化方式SAR图像海面油膜识别的比较——以“桑吉”轮事故为例[J].海洋开发与管理,2019,36(3):54-56

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基于GF-3的不同极化方式SAR图像海面油膜识别的比较——以“桑吉”轮事故为例
付弘涛,秦平
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自然资源部东海预报中心

摘要:

基于我国自主研发的首颗分辨率达到1 m的C频段多极化合成孔径雷达高分三号卫星（GF-3），通过典型溢油案例定性和定量地比较了双极化与单极化图像预处理性能，分析了不同的极化组合对海面油膜识别结果的影响。得出结论：同向极化与异向极化成像差异明显，VV极化明显比VH极化回波强度高，并且油膜识别度较高；相反，双极化VHVV方式与单极化VH方式图像效果区别不大，双极化方式并不能绝对性地提高地物识别度。

关键词: 合成孔径雷达案例双极化单极化油膜识别

DOI：

基金项目:

Comparison of Sea Surface Oil Film Identification in Different Polarization based GF-3 SAR Images: A Case Study of the “Sangji” Accident

FU Hongtao,QIN Ping

East China Sea Forecast Center,Ministry of Natural Resources

Abstract:

Based on the first c-band multi-polarization synthetic aperture radar satellite data (GF-3) with a resolution of 1m independently developed in China,the dual-polarization and unipolarization image preprocessing performance was compared qualitatively and quantitatively in typical oil spill cases,and the influence of different polarization combinations on the identification results of offshore oil film was analyzed.It was concluded that the imaging difference between unidirectional polarization and anisotropic polarization was obvious,the VV polarization was obviously higher than the VH polarization echo,and the oil film identification was higher.On the contrary,the image effect of dualpolarization VHVV mode was not much different from that of singlepolarization VH mode,and dualpolarization mode could not absolutely improve the recognition of ground objects.

Key words: Synthetic aperture radar,Case,Double polarization,Literal,Oil film identification