A Hybrid Asymptotic-FVTD Method for the Estimation of the Radar Cross Section of 3D Structures
Department of Electrical, Electronic, Telecommunications Engineering and Naval Architecture (DITEN), University of Genoa, 16145 Genoa, Italy
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Electronics 2019, 8(12), 1388; https://doi.org/10.3390/electronics8121388
Received: 19 October 2019 / Revised: 30 October 2019 / Accepted: 17 November 2019 / Published: 21 November 2019
(This article belongs to the Special Issue Electromagnetic Scattering and Its Applications: From Low Frequencies to Photonics)
The Finite Volume Time-Domain (FVTD) method is an effective full-wave technique which allows an accurate computation of the electromagnetic field. In order to analyze the scattering effects due to electrically large structures, it can be combined with methods based on high-frequency approximations. This paper proposes a hybrid technique, which combines the FVTD method with an asymptotic solver based on the physical optics (PO) and the equivalent current method (ECM), allowing the solution of electromagnetic problems in the presence of electrically large structures with small details. Preliminary numerical simulations, aimed at computing the radar cross section of perfect electric conducting (PEC) composite objects, are reported in order to evaluate the effectiveness of the proposed method.
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MDPI and ACS Style
Fedeli, A.; Pastorino, M.; Randazzo, A. A Hybrid Asymptotic-FVTD Method for the Estimation of the Radar Cross Section of 3D Structures. Electronics 2019, 8, 1388.
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