粗糙海面上三维金属目标的电磁散射特性分析
doi: 10.3724/SP.J.1146.2006.01102
Analysis of Electromagnetic Scattering from the 3D Conducting Object on the Random Ocean-Like Rough Surfaces
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摘要: 该文采用矩量法(MoM)计算粗糙海面上三维金属目标的电磁散射特性。计算了位于半空间媒质中的电偶极子和磁偶极子的矢量位并矢格林函数和标量位格林函数，并将其应用于矩量法中。把海水视为下半空间媒质，粗糙海面为位于上半空间中的介质表面。通过建立介质和金属混合目标的积分方程，并采用迭代方法求解矩阵方程以得到该模型的散射特性，数值结果验证了本文方法的有效性。Abstract: The ElectroMagnetic (EM) scattering characteristic from the 3D conducting object above the random ocean-like rough surfaces is evaluated by using the Method of Moment (MoM) in this paper. The vector potential dyadic Greens function and the scalar potential Greens functions are calculated of the electric dipole and magnetic dipole in the half space media. Using them in the MoM, the water sea could be regarded as the half low space medium and the sea rough surfaces could be regarded as the dielectric surfaces above the sea. The scattering characteristic of this model is calculated by establishing the integral equation of the combined conducting/dielectric objects and solving the matrix equation with the iteration method. The numerical results show the method presented in this paper is valid.
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Pino M R and Landesa L, et al.. The generalized forwardbackwardmethod for analyzing the scattering from targetson ocean-like rough surfaces[J]. IEEE Trans. on AntennasPropagat， 1999, 47(6): 961-969.[2]Donohue D J, Ku H C, and Thompson D R. Application ofiterative moment-method solutions to ocean surface radarscattering[J].IEEE Trans. on Antennas Propagat.1998, 46(1):121-132[3]Torrungrueng D, Chou H, and Johnson J T. A novelacceleration algorithm for the computation of scattering fromtwo-dimensional large-scale perfectly conducting randomrough surfaces with the forward-backward method[J].IEEETrans. on Geoscience and Remote Sensing.2000, 38(4):1656-1668[4]Liu Z, He J and Xie Y, et al.. Multilevel fast multipolealgorithm for general targets on a half-space interface[J].IEEETrans. on Antennas Propagat.2002, 50(12):1838-1849[5]Dural G and Aksun M I. Closed-form Greens functions forgeneral sources and stratified media[J].IEEE Trans. onMicrowave Theory Tech.1995, 43(7):1545-1552[6]Chow Y L, Yang J J and Fang D G, et al., Closed form spatialGreens function for the thick substrate[J].IEEE Trans. onMicrowave Theory Tech.1991, 39(3):588-592[7]Aksun M I. A robust approach for the derivation ofclosed-form Greens functions[J].IEEE Trans. on MicrowaveTheory Tech.1996, 44(3):651-658 -
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