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主要研究了随机粗糙表面的电磁散射问题。在用数值方法研究粗糙表面电磁散射过程中,经常遇到大型的数值计算问题。为解决这些问题建议运用一种新的基于积分方程的区域分解算法。用此新的算法对粗糙表面的散射进行了Monte Carlo模拟。散射计算结果与用直接反演的计算结果进行了比较,结果表明,两种方法符合很好,证明了区域分解算法的可行性。另外,从散射结果也得到粗糙表面散射的背向加强现象。
The main research of random rough surface electromagnetic scattering problem. In the numerical method to study the electromagnetic scattering of rough surface, we often encounter large numerical problems. In order to solve these problems, it is suggested to use a new region decomposition algorithm based on integral equation. The Monte Carlo simulation of the scattering of the rough surface is performed with this new algorithm. The results of the scattering calculation are compared with those obtained by the direct inversion. The results show that the two methods are in good agreement and the feasibility of the regional decomposition algorithm is proved. In addition, backscattering of the rough surface is also obtained from the scattering results.