海洋科学2016，Vol.40Issue(2)：159-164,6.DOI:10.11759/hykx20150927002
基于二维激光观测的溢油及其乳化过程散射模式研究进展
Scattering model research based on two-dimensional laser ob-servation of spilled oil and emulsification processes
摘要
Abstract
Synthetic aperture radar (SAR) is an effective microwave sensor to detect oil spills, which can image ocean surfaces during the day and night with high resolution and over large coverage areas independent of cloud cover. SAR plays an increasingly important role in oil spill disaster emergency monitoring of the sea surface. Oil spill detection using SAR images relies on the fact that oil slicks decrease the sea surface back-scatter of capil-lary-gravity waves, which result in a dark formation that contrasts with the brightness of the surrounding spill-free sea. However, the emulsifying processes of the sea surface oil spill directly affects the observational precision of the scattering cross-section in SAR. This project will be based on physical oceanography, the principle of lasers, and the sea surface electromagnetic scattering theory. Using a laser scanner, observing the sea surface roughness of an oil spill can establish a corresponding relationship with the characteristic parameters of oil spills and the scat-tering coefficient. We experimentally coupled the relationship between the characteristic parameters of oil spills with the scattering cross-section. Using electromagnetic scattering, numerical modeling sets up the sea surface scattering model of oil spills and allows the study of the influence of the oil spill emulsifying process on the scat-tering cross-section. This project will provide the possibility to monitor oil spill volume, thickness and distribution pattern by SAR. It will further reveal the sea surface scattering mechanisms of oil spills and improve the accuracy and ability of monitoring oil spills by SAR.关键词
微波后向散射/激光扫描仪/海面溢油/溢油海面粗糙度/乳化Key words
microwave scattering cross section/laser scanner/oil spill of sea surface/roughness of oil film/emulsification引用本文复制引用
过杰,孟俊敏,何宜军..基于二维激光观测的溢油及其乳化过程散射模式研究进展[J].海洋科学,2016,40(2):159-164,6.基金项目
国家自然科学基金面上项目(41576032,41176160)@@@@ Supported by General Program of National Natural Science Foundation of China (41576032 （41576032,41176160）
41176160)。 （）
