中文说明：是学习PCA特征提取的很好的学习资料，用于特征降维，特征融合，相关分析等,能量熵的计算，最终的权值矩阵就是滤波器的系数，相控阵天线的方向图（切比雪夫加权），包括数据分析、绘图等等。
English Description：
Is learning PCA feature extraction of good learning materials for feature dimensionality reduction, feature fusion, correlation analysis, energy entropy calculation, final weight matrix is that of the filter coefficients, phased array antenna directional diagram (Chebyshev weighted), including data analysis, drawing and so on.