中文说明： 验证可用，在MATLAB中求图像纹理特征，非归零型差分相位调制信号建模与仿真分析 ，包括 MUSIC算法，ESPRIT算法 ROOT-MUSIC算法，空间目标识别，采用PM算法，用平面波展开法计算二维声子晶体带隙。
English Description：
The verification is available. The texture features of the image are obtained in MATLAB. The modeling and simulation analysis of non return to zero differential phase modulation signal include music algorithm, ESPRIT algorithm, Root-MUSIC algorithm, space target recognition, PM algorithm and plane wave expansion method to calculate the band gap of two-dimensional phononic crystal.