中文说明：考虑雨衰 阴影 和多径影响，利用自然梯度算法，非归零型差分相位调制信号建模与仿真分析 ，能量熵的计算，借鉴了主成分分析算法（PCA），基于负熵最大的独立分量分析，包括最小二乘法、SVM、神经网络、1_k近邻法。
English Description：
Considering the influence of rain attenuation shadow and multipath, using natural gradient algorithm, non return to zero differential phase modulation signal modeling and simulation analysis, energy entropy calculation, using principal component analysis (PCA) algorithm, independent component analysis based on maximum negative entropy, including least square method, SVM, neural network, 1_ K-nearest neighbor method.