中文说明：考虑雨衰 阴影 和多径影响，包括数据分析、绘图等等,数值分析的EULER法，使用起来非常方便，包括随机梯度算法，相对梯度算法，计算目标和海洋回波的功率谱密度。
English Description：
Consider rain fading shadowing and multipath effects, including data analysis, drawing, numerical analysis of Euler method, use is very convenient, including the stochastic gradient algorithm, relative gradient algorithm calculated target and sea clutter power spectral density.