An approach to solve the scattered field by perfectly conducting cylinders with circular cross-section, placed below a multilayered medium, under illumination by a line source, is presented. In principle, the interaction of the field scattered by the targets with the multilayer above leads to an infinite number of scattered fields, excited as multiple reflections in each layer by the interfaces. Nevertheless, the developed theoretical formulation is a very compact one, as only two scattered-field contributions are used in each layer, a down-propagating term, described as scattered-reflected field, and an up-propagating one relevant to the scattered-transmitted field. Suitable basis functions, i.e., cylindrical waves expressed through plane-wave spectra, are employed, which are defined through reflection and transmission coefficients of a multilayered medium. As shown in the numerical implementation, the method can be applied to the modeling of several radar problems of targets in complex environments. For example, the technique can be employed to model buried cylinders in geophysical scenarios, in Ground Penetrating Radar applications. The modeling of scattered field by hidden targets in Through-the-Wall radar surveys is another possible field of use. The multilayer may, indeed, model a stratified masonry, but also a room hiding a target in a buildings’ interior.

中文翻译：

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通过完美地传导隐藏在多层介质下的圆柱目标进行散射

提出了一种通过完美传导圆形横截面的圆柱体来解决散射场的方法，圆柱体放置在多层介质的下方，并通过线光源进行照明。原则上，靶材散射的场与上面的多层的相互作用导致无限数量的散射场，这些散射场被界面中的每一层反射为多重反射。然而，已发展的理论公式非常紧凑，因为每层仅使用两个散射场贡献，向下传播的术语称为散射反射场，而向上传播的术语与散射透射场有关。场地。使用合适的基本函数，即通过平面波谱表示的圆柱波，通过多层介质的反射系数和透射系数定义。如数值实现所示，该方法可以应用于复杂环境中目标的几种雷达问题的建模。例如，在探地雷达应用中，该技术可用于在地球物理场景中对埋藏圆柱进行建模。穿墙雷达测量中隐藏目标对散射场的建模是另一种可能的使用领域。实际上，多层可以模拟分层的砌体，但也可以模拟在建筑物内部隐藏目标的房间。在探地雷达应用中。穿墙雷达测量中隐藏目标对散射场的建模是另一种可能的使用领域。实际上，多层可以模拟分层的砌体，但也可以模拟在建筑物内部隐藏目标的房间。在探地雷达应用中。穿墙雷达测量中隐藏目标对散射场的建模是另一种可能的使用领域。实际上，多层可以模拟分层的砌体，但也可以模拟在建筑物内部隐藏目标的房间。