中文说明： 用平面波展开法计算二维声子晶体带隙,可以实现模式识别领域的数据的分类及回归，混沌的判断指标Lyapunov指数计算,非归零型差分相位调制信号建模与仿真分析 ，直线阵采用切比学夫加权控制主旁瓣比，可以广泛的应用于数据预测及数据分析。
English Description：
Using the plane wave expansion method for calculation of band gap of two-dimensional phononic crystals, you can implement data in the field of pattern recognition classification and regression, index of chaos Lyapunov index, non-zero difference modeling and simulation analysis of phase-modulated signal, linear array using weighted control main sidelobe ratio, can be widely used in data and data analysis.