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Ocean Vector Winds Retrieval From C-Band Fully Polarimetric SAR Measurements

文献类型：期刊论文

作者Zhang, Biao1; Perrie, William2; Vachon, Paris W.3; Li, Xiaofeng; Pichel, William G.4; Guo, Jie5; He, Yijun1
刊名IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
出版日期2012-11-01
卷号50期号:11页码:4252-4261
关键词Fully polarimetric SAR ocean-surface wind fields polarimetric correlation coefficient SAR polarimetric odd-symmetry simultaneous wind speed and direction SAR retrievals
ISSN号0196-2892
产权排序[Zhang, Biao; He, Yijun] Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China; [Perrie, William] Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada; [Vachon, Paris W.] Def Res & Dev Canada, Ottawa, ON K1A 0Z4, Canada; [Pichel, William G.] Ctr Satellite Applicat & Res STAR, IM Syst Grp, Natl Environm Satellite Data & Informat Serv, Natl Ocean & Atmospher Adm, Camp Springs, MD 20746 USA; [Guo, Jie] Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
通讯作者Zhang, B (reprint author), Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China.
中文摘要We present an efficient algorithm for retrieving the ocean-surface wind vector from C-band Radar Satellite RADARSAT-2 fully polarimetric synthetic aperture radar (SAR) measurements based upon the copolarized geophysical model function, i.e., CMOD5.N, and the cross-polarized ocean backscatter model, i.e., C-2PO. The analysis of fine quad-polarization mode single-look complex SAR data and collocated in situ moored buoy observations reveals that the polarimetric correlation coefficient between co- and cross-polarization channels has odd symmetry with respect to the wind direction. This characteristic is different from the feature that normalized radar cross sections for quadpolarization have even symmetry regarding the wind direction. We first use the C-2PO model to directly retrieve wind speeds without any external wind-direction and radar-incidence-angle inputs. Subsequently, the retrieved wind speeds, along with incidence angles and CMOD5.N, are employed to invert the wind direction, still with ambiguities. The odd-symmetry property is then applied to remove the wind direction ambiguities. Thus, it is shown that fully polarimetric SAR measurements provide complementary directional information for the ocean-surface wind fields. This method has the potential to improve wind vector retrievals from space.
英文摘要We present an efficient algorithm for retrieving the ocean-surface wind vector from C-band Radar Satellite RADARSAT-2 fully polarimetric synthetic aperture radar (SAR) measurements based upon the copolarized geophysical model function, i.e., CMOD5.N, and the cross-polarized ocean backscatter model, i.e., C-2PO. The analysis of fine quad-polarization mode single-look complex SAR data and collocated in situ moored buoy observations reveals that the polarimetric correlation coefficient between co- and cross-polarization channels has odd symmetry with respect to the wind direction. This characteristic is different from the feature that normalized radar cross sections for quadpolarization have even symmetry regarding the wind direction. We first use the C-2PO model to directly retrieve wind speeds without any external wind-direction and radar-incidence-angle inputs. Subsequently, the retrieved wind speeds, along with incidence angles and CMOD5.N, are employed to invert the wind direction, still with ambiguities. The odd-symmetry property is then applied to remove the wind direction ambiguities. Thus, it is shown that fully polarimetric SAR measurements provide complementary directional information for the ocean-surface wind fields. This method has the potential to improve wind vector retrievals from space.
学科主题Geochemistry & Geophysics; Engineering; Remote Sensing
研究领域[WOS]Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
关键词[WOS]SURFACE WIND ; SCATTEROMETER DATA ; DIRECTION ; QUIKSCAT ; IMAGES ; RADAR ; SCATTERING
收录类别SCI
资助信息Canadian Space Agency Government Related Initiatives Program; National Nature Science Foundation of China [41176170]; Nanjing University of Information Science and Technology [S8111003001]; National Natural Science Youth Foundation of Jiangsu Province [SBK201241656]
原文出处http://dx.doi.org/TGRS.2012.2194157
语种英语
WOS记录号WOS:000310888000003
公开日期2013-03-08
源URL[http://ir.yic.ac.cn/handle/133337/6165]  
专题烟台海岸带研究所_海岸带信息集成与综合管理实验室
作者单位1.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China
2.Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada
3.Def Res & Dev Canada, Ottawa, ON K1A 0Z4, Canada
4.Ctr Satellite Applicat & Res STAR, IM Syst Grp, Natl Environm Satellite Data & Informat Serv, Natl Ocean & Atmospher Adm, Camp Springs, MD 20746 USA
5.Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Biao,Perrie, William,Vachon, Paris W.,et al. Ocean Vector Winds Retrieval From C-Band Fully Polarimetric SAR Measurements[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2012,50(11):4252-4261.
APA Zhang, Biao.,Perrie, William.,Vachon, Paris W..,Li, Xiaofeng.,Pichel, William G..,...&He, Yijun.(2012).Ocean Vector Winds Retrieval From C-Band Fully Polarimetric SAR Measurements.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,50(11),4252-4261.
MLA Zhang, Biao,et al."Ocean Vector Winds Retrieval From C-Band Fully Polarimetric SAR Measurements".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 50.11(2012):4252-4261.

入库方式： OAI收割

来源：烟台海岸带研究所

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