首页> 外文期刊>Applied optics >ELECTROMAGNETIC WAVE SCATTERING BY HIGHLY ELONGATED AND GEOMETRICALLY COMPOSITE OBJECTS OF LARGE SIZE PARAMETERS - THE GENERALIZED MULTIPOLE TECHNIQUE
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ELECTROMAGNETIC WAVE SCATTERING BY HIGHLY ELONGATED AND GEOMETRICALLY COMPOSITE OBJECTS OF LARGE SIZE PARAMETERS - THE GENERALIZED MULTIPOLE TECHNIQUE

机译:大尺寸参数的高度扩展和几何复合对象的电磁波散射-广义多极技术

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摘要

The potency and versatility of a numerical procedure based on the generalized multipole technique (GMT) are demonstrated in the context of full-vector electromagnetic interactions for general incidence on arbitrarily shaped, geometrically composite, highly elongated, axisymmetric perfectly conducting or dielectric objects of large size parameters and arbitrary constitutive parameters. Representative computations that verify the accuracy of the technique are given for a large category of problems that have not been considered previously by the use of the GMT, to our knowledge. These problems involve spheroids of axial ratios as high as 20 and with the largest dimension of the dielectric object along the symmetry axis equal to 75 wavelengths; sphere-cone-sphere geometries; peanut-shaped scatterers; and finite-length cylinders with hemispherical, spherical, and flat end caps. Whenever possible, the extended boundary-condition method has been used in the process of examining the applicability of the suggested solution, with excellent agreement being achieved in all cases considered. It is believed that the numerical-scattering results presented here represent the largest detailed three-dimensional precise modeling ever verified as far as expansion functions that fulfill Maxwell's equations throughout the relevant domain of interest are concerned. [References: 29]
机译:在全矢量电磁相互作用的背景下,论证了基于广义多极技术(GMT)的数值程序的效力和通用性,该相互作用可在大尺寸任意形状,几何复合,高度伸长,轴对称的完美导电或介电物体上普遍入射参数和任意本构参数。据我们所知,对于以前未通过使用GMT进行考虑的一大类问题,给出了验证该技术准确性的代表性计算。这些问题涉及轴比高达20的球体,并且沿着对称轴的电介质物体的最大尺寸等于75个波长。球锥几何形状;花生状散射体;以及带有半球形,球形和扁平端盖的有限长圆柱体。在可能的情况下,在检查建议解决方案的适用性过程中一直使用扩展边界条件方法,并且在所有考虑的情况下都取得了很好的一致性。可以相信,这里提出的数字散射结果代表了有史以来最大的详细三维精确建模,这是在整个相关领域中满足麦克斯韦方程组的展开函数所证实的。 [参考:29]

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