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Fast and accurate analysis of broadband RCS using method of moments with loop-tree basis functions

机译：带有环树基函数的矩量法快速准确地分析宽带RCS

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摘要

An efficient method for wide-band electromagnetic (EM) scattering properties analysis of three-dimensional arbitrarily shaped perfectly electric conductor (PEC) objects is proposed in this study. The electric field integral equation (EFIE) is solved by the method of moments (MoM) base on the loop-tree basis functions. The EM properties not only can be achieved accurately in high frequency band, but also in low frequency band within the desired bandwidth using loop-tree basis functions. To improve the computation efficiency, the Maehly approximation method is utilised. Compared with the direct solution method and asymptotic waveform evaluation technique, the proposed technique is found to be efficient in a broadband and wide angular domain with the lower central processing unit time required and without loss of accuracy.
机译：提出了一种有效的三维任意形状的完美电导体（PEC）物体宽带电磁（EM）散射特性分析的方法。电场积分方程（EFIE）通过基于环树基函数的矩量法（MoM）求解。使用环路树基函数，不仅可以在高频带中精确地获得EM特性，而且可以在所需带宽内的低频带中精确地实现EM特性。为了提高计算效率，采用了Maehly近似方法。与直接求解方法和渐近波形评估技术相比，发现该技术在宽带和广角域中是有效的，所需的中央处理单元时间较短，并且不会损失精度。

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