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采用几何光学模型和统计的方法研究了风成海面的极化辐射特性 .本文假设海面由一系列随机分布的小镜面组成 ,海面对电磁波的散射可看作镜面的反射 ,风成海面的辐射是小镜面辐射的统计平均 .计算了前三个Stokes参数 ,结果表明辐射亮温随方位的变化关系为余弦函数 ,周期为π ;辐射亮温随方位角的变化幅度为几个Κ .风成海面的极化辐射特性提供了利用被动微波遥感手段反演海洋风场的途径 .
The geometrical optics model and statistical method are used to study the polarization of the wind into the sea surface.The paper assumes that the sea surface is composed of a series of randomly distributed small mirrors which can be regarded as the specular reflection and the sea surface radiation Is the statistical average of the small mirror radiation.The first three Stokes parameters are calculated.The results show that the radiation bright temperature changes cosine function with the azimuth, the period is π, and the variation range of the radiant temperature with azimuth is several K. The polarized radiation characteristics of the sea surface provide a means of using the microwave remote sensing method to retrieve the ocean wind field.