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矩量法是求解目标电磁散射问题的一种常用数值方法,因其精度较高而被广泛应用.应用矩量法求解目标频空电磁散射特性时,随着入射波的角度和频率的变化,需要间隔很小的角度和频率步长反复求解矩量法生成的矩阵方程,运算量极大.为解决此类问题,本文结合压缩感知理论和渐近波形估计形成一种新的有效计算方法.首先,基于压缩感知理论引入一种富含空间信息的新型入射源,其次,在该入射源照射下应用渐近波形估计技术求解,从而快速实现目标频空电磁散射特性分析.
Moment method is a common numerical method to solve the target electromagnetic scattering problem, which is widely used because of its high accuracy. When using the method of moment to solve the target electromagnetic scattering characteristics of the target, with the angle and frequency of the incident wave, In order to solve these problems, this paper combines compression sensing theory and asymptotic waveform estimation to form a new effective calculation method. First, a new type of incident source rich in spatial information is introduced based on compressive sensing theory. Secondly, the asymptotic waveform estimation technique is applied to the incident source to solve the target electromagnetic scattering characteristics.