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°。

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.