基于高斯射束和帧分解的快速单稳态散射计算

2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI:10.1109/comcas52219.2021.9629065

C. Letrou, M. Hariz, B. Galanti, A. Boag

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引用次数: 0

摘要

将框架理论应用于源场分解，有利于将入射平面波分解为一组近轴高斯光束。这种光束的空间和光谱定位特性允许它们通过多次反射，当反射表面光滑且与波长相比足够大时。高斯光束的光谱定位也产生了显著的减少光束的数量，有助于单稳态散射截面。提出了一种利用这些特性的算法，并将其应用于模拟类似城市环境的一组块的散射，与波长相比具有较大的尺寸。数值结果将证明该方法的有效性，并将与快速迭代物理光学结果进行比较。

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Fast Monostatic Scattering Computation Based on Gaussian Beam Shooting and Frame Decomposition

Frame theory applied to source field decomposition facilitates the decomposition of an incident plane wave into a set of paraxial Gaussian beams. Spatial and spectral localization properties of such beams allow to bounce them through multiple reflections when reflecting surfaces are smooth and large enough as compared to wavelength. Gaussian beam spectral localization also yields dramatic reduction of the number of beams contributing to monostatic scattering cross section. An algorithm taking advantage of those properties is presented and applied to scattering by a set of blocks simulating an urban-like environment, with large dimensions as compared to wavelength. Numerical results will illustrate the method efficiency and will be compared to Fast Iterative Physical Optics results.

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来源期刊

2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)

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