| 合成孔径雷达图像的近岸海面风场反演 |
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| 引用本文： | 杨劲松,黄韦艮,周长宝,傅斌,史爱琴,厉冬玲.合成孔径雷达图像的近岸海面风场反演[J].遥感学报,2001,5(1):13-16. |
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| 作者姓名： | 杨劲松 黄韦艮 周长宝 傅斌 史爱琴 厉冬玲 |
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| 作者单位： | 国家海洋局 |
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| 基金项目： | 本研究得到国家863项目(818－06－02)和国家海洋局海洋动力过程与卫星海洋学重点实验室开放基金的资助。 |
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| 摘 要： | 根据海面微波散射原理，给出了星载合成孔径雷达(Synthetic
Aperture Radar,SAR)图像海面风场反演的方法。该方法包括SAR图像辐射定标、海面风向确定和风速计算。利用该方法由加拿大RadarsatSAR图像反演获得了中国海南省东南部近岸海区海面风场，并与预报风场作了比较。结果显示，二者相符得很好，风速的均方根误差为0.94m/s，风向的均方根误差为4.03°。
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| 关 键 词： | 合成孔径雷达 海面风场 反演 风速 风向 SAR图像 |
| 文章编号： | 1007-4619 (2001) 01-0013-04 |
| 收稿时间： | 1999/12/2 0:00:00 |
| 修稿时间： | 1999年12月2日 |
Coastal Ocean Surface Wind Retrieval from SAR Imagery |
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| YANG Jin-song,HUANG Wei-gen,ZHOU Chang-bao,FU Bin,SHI Ai-qin and LI Dong-ling.Coastal Ocean Surface Wind Retrieval from SAR Imagery[J].Journal of Remote Sensing,2001,5(1):13-16. |
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| Authors: | YANG Jin-song HUANG Wei-gen ZHOU Chang-bao FU Bin SHI Ai-qin and LI Dong-ling |
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| Institution: | Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China;Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China;Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China;Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China;Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China;Key Lab.of Ocean Dynamic Processes and Satellite Oceanography,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China |
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| Abstract: | This paper presents an approach to the retrieval of highresolution ocean surface wind fields from spaceborne synthetic aperture radar (SAR) imagery based on scattering theory of microwave for ocean surface. It consists of three procedures: radiometric calibration of SAR image, wind direction determination and wind speed calculation. As a case study, a Radarsat SAR image of the coastal zone near the Hainan Island, China is analyzed. The results are compared with those calculated from a numerical model. It is shown that they are in good agreement. The root－mean－square errors of wind speed and wind direction are 0.94m/s and 4.03° respectively. |
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| Keywords: | synthetic aperture radar (SAR) ocean surface wind field |
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