海面溢油自动监测中的油膜与类油膜特征分析  

Characteristics Analysis of the Oil Spill and Looks-alike for Sea Surface Oil Spill Automatic Monitoring

作　　者：舒迟 宋莎莎 SHU Chi;SONG Sha-sha(Yantai Maritime Administration,Yantai Shandong 264000,China;Safety&Environmental Protection Branch,CNOOC Energy Technology&Services Limited,Tianjin 300452,China)

机构地区：[1]烟台海事局,山东烟台264000 [2]中海油能源发展股份有限公司安全环保分公司,天津300452

出　　处：《船海工程》2020年第2期64-67,共4页Ship & Ocean Engineering

基　　金：国家自然科学基金(41976176)。

摘　　要：利用合成孔径雷达采集到的海上影像数据,可以全天时、全天候对海上溢油问题进行实时自动监测,海面溢油在SAR图像上呈现为明显的暗斑,海洋、大气现象等因素形成(通常称之为类油膜)也会在SAR图像上呈现出暗斑痕迹,为实际溢油情况判定增加了多种疑似类的不确定因素。通过在形状、灰度及纹理方面的差异对比,得到类油膜在纹理特征的概率密度分布上与油膜的各项性能指标有明显差异性,该方法对于提升自动监测系统有参考价值。In the many means of oil spill monitoring over sea surface,space-borne synthetic aperture radar(SAR)is an advanced sensor,capable of providing high-resolution observations under all-weather and day-night conditions.The backscattering over oil spill area is relatively lower than the surroundings because sea surface capillary and short gravity waves are damped by the oil spills.Generally,signatures of oil spills are visible as dark targets in SAR images,which is helpful to detect or segment areas of interest.However,dark targets appear on SAR images can also be formed by oceanic or atmospheric phenomena and they are therefore referred to as looks-alike.In order to improve the technical specifications of the sea surface oil spill automatic monitoring system,it is very necessary and meaningful to study the differences in shape,gray and texture features between oil spill and looks-alike.

关 键 词：SAR 溢油 监测 类油膜 

分 类 号：U698.7[交通运输工程—港口、海岸及近海工程]