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Research of Retrieving Sea Surface Wind Vectors Based on Sentinel-1A Satellite SAR Images

Abstract

海面风场是海气交互界面的重要物理参数,与海洋中绝大多数的海水运动密切相关。海面风场还是海气相互作用的重要媒介,调节了海水和大气之间的物质以及能量输送,对全球气候调节也有着十分重要的作用。 船舶、浮标等观测手段花费高昂,加上海洋面积巨大,可获得的现场海面风场数据十分有限,很难满足大面积海面风场的观测需求。日益发展的卫星遥感技术,为大面积观测风场提供了可能,微波散射计已经成为大面积获取全球海面风场的最重要遥感手段之一,不过微波散射计的空间分辨率通常为25-50km,难以满足对高分辨风场的需求。相比于散射计或辐射计,合成孔径雷达(SAR)同样具有全天时、全天候观测海洋的能力,同时其通过距离向的脉冲...Ocean surface wind field is an important parameter of ocean-air interface, it is related with most of the seawater movements. Surface wind is also the medium of ocean-air interaction, which may adjust the matter and energy transformation between ocean and air. So it is important for the global climate change. Traditional wind measurements using ships or buoys cost a lot. And the wind data is too ...学位:理学硕士院系专业:海洋与地球学院_物理海洋学学号:2232013115135

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