求解谐振区复杂目标散射场的部件耦合分解法

Coupling Decomposition Method of Solving theScattering Field for Targets in the Resonance Region

本文提出了一种新的谐振区目标散射的计算方法──部件耦合分解法。这种方法在采用回路线栅模型的基础上，利用谐振区目标散射体中各部件散射体特性阻抗矩阵延续不变性的特点，考虑各部件散射体之间的相互电磁耦合作用，并应用数学上分块矩阵理论，以简化谐振区目标散射体的求解，利用这种方法，采用并行处理，可加快谐振区目标散射体的求解速度，扩大可求解问题的电尺寸，数值结果表明了本文提出的部件耦合分解方法的有效性。

A new coupling decomposition method of solving the scattering field for complex targets in resonance region is presented. Based on the reseau loop model and the features of continuation and invariability of characteristic impedance matrix, the calculation of RCS can be simplified by using this account of parts' mutual electromagnetic coupling action and theory of block matrix. By using this method combined with the technique of parallel calculation, the result can be got quickly. Taking advantage of the coupling decomposition property, the solved targets' size compared with the incidence wavelength can be expanded. Some examples are given, and the numerical results are good enough compared with previously published data.