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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing. >Full-wave analysis of microwave scattering from short vegetation: an investigation on the effect of multiple scattering
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Full-wave analysis of microwave scattering from short vegetation: an investigation on the effect of multiple scattering

机译：短植被对微波散射的全波分析：多重散射效应的研究

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摘要

A full-wave solution for polarimetric scattering from a cluster of randomly oriented three-dimensional lossy dielectric structures above an impedance surface is presented to investigate the importance of multiple scattering. The problem is formulated using an integral equation in conjunction with the exact image representation of dyadic Green's function for the half-space problem. Then, the integral equation is solved for the induced equivalent polarization currents using the method of moments. The accuracy of the numerical code is verified using other existing numerical results and experimental observations. The model is then used to examine the effect of multiple scattering among a cluster of relatively short stems and is shown that multiple scattering significantly affects the cross-polarized backscatter whereas it has a moderate effect on the copolarized backscattering depending on the stem density.
机译：为了研究多重散射的重要性，提出了一种全波解决方案，用于从阻抗表面上方的随机定向的三维有损介电结构簇中进行极化散射。该问题是使用积分方程和半空间问题的二进格林函数的精确图像表示来表示的。然后，使用矩量法求解感应等效极化电流的积分方程。使用其他现有的数值结果和实验观察结果验证了数字代码的准确性。然后，该模型用于检查相对较短的茎簇中多次散射的影响，并显示多次散射会显着影响交叉极化的反向散射，而根据茎的密度，它对同极化的反向散射具有中等程度的影响。

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