基于抛物线方程求解二维电磁散射问题

2-D electromagnetic scattering calculations with the parabolic equation

文章应用抛物线方程求解二维凸面物体的双站雷达散射截面,模拟多体散射问题。其优点在于将传统的波动方程降维处理,采用步进迭代方法,节省大量计算资源。应用完全匹配层和有限差分法计算单个和多个圆柱的小角度双站RCS,计算结果和精确解基本吻合,且计算速度大大提高。

The parabolic equation（PE） is used to compute the bistatic RCS of two-dimensional convex objects and simulate the scattering of multi-objects. Since the PE method degrades the traditional wave equation＇s dimensions and uses the marching iteration method, a lot of computation resources are saved. The perfectly matched layer technique and the finite difference method are applied to com- puting the narrow-angle bistatic RCSs of the single cylinder and multiple cylinders. Numerical results are in good agreement with analytical solutions ,and the soeed of calculation is improved greatly.