【摘要】 本文以雨介质为例，把离散随机介质视为一随机系统，应用系统辨识方法，得到了雨介质的传递函数矩阵模型和模型参数。利用雨介质的系统模型，结合电波传播理论，求出了雨介质的一个重要传输参数：路经平均雨滴尺寸分布。计算结果与实测值对比表明本文提出的方法是简便有效的。更多还原

【Abstract】 The discrete random medium is taken as a random system in this paper- Taking therainfall as example and by using system identification nlethod, the transfer function matrix model andthe parameter of rainfall are obtained- Appling the system medel of rain medium and radio wavepropagation theory, an important transfer parameter, average raindrop size distribution of path, isobtained. The comparision between the experimental data and theoretical result shows that themethed in this paper is simple, convenient and effective.更多还原