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数值模拟二维等腰直角三角形导电柱体和三维方形导电柱体对高斯脉冲平面波的电磁散射近场和远场分布。数值结果表明在三角柱体的电磁散射近场中镜面反射并不明显 ,但在远场却非常明显并且成为最主要的散射方向。三维电磁散射的数值结果表明 ,二次辐射是电磁散射的主要机理。并且在多个导体目标情况下 ,各自的散射场将互相干涉形成总的散射场。
The electromagnetic scattering near-field and far-field distribution of Gaussian pulse plane wave are numerically simulated by two-dimensional isosceles right-angled triangular conductive cylinder and three-dimensional square conductive cylinder. The numerical results show that the specular reflection is not obvious in the near-field of the electromagnetic scattering of the triangular cylinder, but it is obvious and becomes the most important scattering direction in the far field. The numerical results of three-dimensional electromagnetic scattering show that the secondary radiation is the main mechanism of electromagnetic scattering. And in the case of multiple conductor targets, the respective scattering fields will interfere with each other to form a total scattering field.