一种电大尺寸对象电磁散射的MEI系数快速算法

针对二维电大尺寸对象电磁散射场的计算，提出一种电磁散射快速算法，该算法以不变性测试方程（measured equation of invariance, MEI）方法为基础，将循环卷积和测试电流跳点平均技术分别用于不同区域对应的MEI 系数，可以大大加速MEI测试方程系数的计算，提高MEI方法的计算速度，通过二维实例的仿真计算验证了这种算法的计算效率和准确度，证实了算法的有效性。

A new approach of accelerating the calculation for the MEI coefficients in the scattering of two-dimensional electrically large conductive bodies

To accelerate the calculation of the measured equation of invariance(MEI) coefficients, a fast approach was presented in the paper. This approach used the cyclic convolution method and skipping nodes technique to calculate the scattering field of metrons in the different areas of the scattering object. Compared with the conventional method, the cyclic convolution method and the skipping nodes technique can greatly reduce the computational complexity of the MEI coefficients. Numerical results show that the hybrid method is efficient.