Numerical Study on Characteristics of Electromagnetic Wave Propagation along Random Rough Surface

我们提出了一种离散光线追踪法，数值模拟了随机粗糙面的传播和后向散射，具有较高的精度。我们还开发了一种算法来生成各种类型的随机粗糙面。结果表明，基于具有幅度修正因子和距离传输阶数的单射线或双射线模型，可以用简单的方式描述电场分布的系综平均。

We have proposed a discrete ray tracing method to numerically simulate propagation along random rough surface and back scattering from it with a good accuracy. We have also developed an algorithm to generate various types of random rough surfaces. It has been demonstrated that the ensemble averages of electric field distributions can be described in a simple fashion based on the 1-ray or 2-ray model with amplitude modification factor and propagation order of distance.