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对散射问题的波动方程引入一种变换,使得变换后的新方程经多重直线法离散后,离散方程的矩阵元素可以利用FFT快速计算得到。而多重直线法能加快直线法的收敛速度。数值计算结果表明多重直线法结合FFT是一种高效率的全波分析方法
The wave equation of the scattering problem is introduced into a transformation so that after the transformed new equation is separated by the multiple linear method, the matrix elements of the discrete equation can be quickly calculated by FFT. The multiple linear method can speed up the convergence rate of the straight line method. The numerical results show that combining multiple linear method with FFT is a high efficiency full wave analysis method