针对传统RWG矩量法分析电大或阵列目标耗时长的问题,提出将等效偶极子法(Equivalent Dipole-moment Method, EDMM)和特征基函数法(Characteristic Basis Function Method, CBFM)结合起来对其进行分析,利用EDMM计算中距离基 函数对的互耦效应,再利用CBFM计算远距离基函数对之间的互耦作用,不仅简化了阻抗矩阵元素的求解,而且加快了阻 抗矩阵的求逆过程。通过该方法对一多目标阵列的散射特性进行了分析,能在保证计算结果精度的同时大大缩减运算的 时间,从而体现了该方法的准确性和实用性。

Considering the problem of needing superabundant time when analyzing the electronic large targets or multi-garget using traditional RWG-MoM, the equivalent dipole moment method (EDMM) and the characteristic basis function method (CBFM) are present to be combined. Firstly, EDMM is used to simplify the computation of mutual coupling between the middle-range basis functions. Secondly, CBFM is also used to calculate the mutual coupling between the long-distance basis functions. So, not only the calculation of impedance matrix elements is simplified, but also the inversion of impedance matrix is quickly to be obtained. Then the scattering field of a multi-target array is calculated by this method. The numerical results obtained are in good agreement with that achieved by traditional RWG-MoM, and the calculating time is reduced obviously, which validate the efficiency and accuracy of the method proposed in this paper.

国家自然科学基金资助项目