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Efficient Electromagnetic Scattering Modeling from Composite Dielectric-Metal Targets
Version 1
: Received: 11 December 2023 / Approved: 11 December 2023 / Online: 11 December 2023 (19:23:59 CET)
A peer-reviewed article of this Preprint also exists.
Hua, M.; He, S. Efficient EM Scattering Modeling from Metal Targets Coated with Anisotropic Thin Layers. Electronics 2024, 13, 536. Hua, M.; He, S. Efficient EM Scattering Modeling from Metal Targets Coated with Anisotropic Thin Layers. Electronics 2024, 13, 536.
Abstract
To address the challenges associated with the difficult electromagnetic (EM) scattering computations of anisotropic dielectric-coated metallic composite targets, we proposed an efficient hybrid algorithm for simulating the EM scattering of complex targets with anisotropic dielectric coatings. This method, based on Impedance Boundary Condition (IBC), utilizes surface impedance vectors to describe the EM properties of the dielectric. It fully leverages the respective advantages of the low-frequency Method of Moments (MoM) and the high-frequency Physical Optics (PO) to achieve high-precision and rapid EM simulation of anisotropic dielectric-coated metallic composite targets. Employing boundary conditions and equivalent principles, we equivalently transform the EM scattering problem of targets with thin dielectric coatings into the radiation problem of equivalent EM current on impedance surfaces. This enables the high-precision and rapid calculation of Radar Cross Sections (RCS) for complex targets with anisotropic dielectric coatings. Using examples such as a square plate structure, a simplified aircraft, and a complex satellite model, the simulation results exhibit a high degree of agreement with full-wave numerical solutions and demonstrate a significant advantage in computational resources. This research convincingly demonstrates the accuracy and effectiveness of the proposed method.
Keywords
electromagnetic scattering; dielectric-metal composite target; anisotropy; hybrid algorithm
Subject
Physical Sciences, Applied Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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