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本文首次给出柱形体的一种有价值的极化散射矩阵 Ss定义 ,Ss具有六个自由度 ,它包含了柱形体散射的所有信息 ,并给出计算平行极化 RCS的垂直极化 RCS等公式。从 Ss也易于导出线极化基极化散射矩阵 Sl 和圆极化基极化散射矩阵 Sc等。在此基础上本文将 Mo M- CGM- FFT混合技术扩展用于分析任意截面的非均匀介质柱的电磁极化散射问题。由于该混合技术的应用 ,大大降低了所需计算机内存和 CPU时间 ,提高了计算效率。本文以介质板柱体的极化散射为例进行了计算 ,所得结果与理论结果以及其它文献中的精确结果进行比较 ,吻合很好。并在此基础上对柱形体的极化散射进行了分析 ,得出几个一般性结论。
For the first time, this paper gives a definition of Ss, a valuable polarization scattering matrix for cylindrical bodies. Ss has six degrees of freedom, which contains all the information about the scattering of cylindrical bodies and gives the vertical polarization RCS for calculating parallel-polarized RCS formula. It is also easy to derive the linearly polarized base-scattering matrix S1 and the circularly-polarized base-polarization scattering matrix Sc from Ss. On this basis, this paper extends the Mo M-CGM-FFT hybrid technique to analyze the electromagnetic polarization scattering of inhomogeneous dielectric columns with arbitrary cross section. Due to the hybrid technology, the required computer memory and CPU time are greatly reduced, and the computing efficiency is improved. In this paper, the polarization scattering of a slab of a slab is calculated as an example. The obtained results are in good agreement with the theoretical results and other accurate results. On this basis, the polarization scattering of the cylindrical body is analyzed and several general conclusions are obtained.