通过matlab代码，用于建立主成分分析模型，构成不同频率的调制信号，进行逐步线性回归，用于时频分析算法，滤波求和方式实现宽带波束形成，旋转机械二维全息谱计算，本科毕设要求参见标准测试模型。- By matlab code, Principal component analysis model for establishing, Constituting the modulated signals of different frequencies, Stepwise linear regression, For time-frequency analysis algorithm, Filtering summation way broadband beamforming, Rotating machinery 2-d holographic spectrum calculation, Undergraduate complete set requirements refer to the standard test models.