Ocean surface wave measurements from fully polarimetric SAR imagery

查看全文 作　　者：XIE [1]Tao;William [2]PERRIE;HE [1]YiJun;LI [3,4]HaiYan;FANG [1]He;ZHAO [1]ShangZhuo;YU [1]WenJin

机构地区：[1]School of Marine Sciences, Nanjing University of Information Science and Technology;[2]Fisheries and Oceans Canada, Bedford Institute of Oceanography;[3]Key Laboratory of Computational Geodynamics, Chinese Academy of Sciences;[4]College of Earth Sciences, University of Chinese Academy of Sciences

出　　处：《Science China Earth Sciences》索引2015年第58卷第10期,共13页

基　　金：This work was supported by the National Natural Science Foundation of China(Grant NO.41276187);the Global Change Research Program of China(Grant No.2015CB953901);the Startup Foundation for Introducing Talent of NUIST(Grant No.20110310);Program for Innovation Research and Entrepreneurship Team in Jiangsu Province;the CFOSAT project,the Canadian Program on Energy Research and Development;the Canadian Space Agency GRIP program funding for wave-ice interactions 摘　　要：A new method for the retrieval of ocean wave parameters from SAR imagery is developed,based on the shape-from-shading(SFS)technique.Previously,the SFS technique has been used in the reconstruction of 3D landform information from SAR images,in order to generate elevation maps of topography for land surfaces.Here,in order to retrieve ocean wave characteristics,we apply the SFS methodology,together with a method to orient the angular measurements of the azimuth slope and range slope,in the measurement of ocean surface waves.This method is applied to high resolution fine-quad polarization mode(HH,VV,VH and HV)C-band RADARSAT-2 SAR imagery,in order to retrieve ocean wave spectra and extract wave parameters.Collocated in situ buoy measurements are used to validate the reliability of this method.Results show that the method can reliably estimate wave height,dominant wave period,dominant wave length and dominant wave direction from C-band SAR images.The advantage of this method is that it does not depend on modulation transfer functions(MTFs),in order to measure ocean surface waves.This method can be used in monitoring ocean surface wave propagation through open water areas into ice-covered areas,especially the marginal ice zone(MIZ)in polar oceans. 关键词：海洋波浪合成孔径雷达图像角测量表面波全极化 SAR图像从明暗恢复形状调制传递函数

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Ocean surface wave measurements from fully polarimetric SAR imagery

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