首页 >  2001, Vol. 5, Issue (1) : 13-16

摘要

全文摘要次数: 4643 全文下载次数: 27
引用本文:

DOI:

10.11834/jrs.20010103

收稿日期:

1999-12-02

修改日期:

2000-07-21

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合成孔径雷达图像的近岸海面风场反演
国家海洋局 海洋动力过程与卫星海洋学重点实验室,国家海洋局 第二海洋研究所,浙江 杭州 310012
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°。

Coastal Ocean Surface Wind Retrieval from SAR Imagery
Abstract:

This paper presents an approach to the retrieval of high resolution 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£oradiometric 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 4.03o respectively.

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