一个计算声子晶体结构的一维传递矩阵法,含噪脉冲信号进行相关检测,结合PCA的尺度不变特征变换(SIFT)算法。- A one-dimensional transfer matrix method to calculate the phonon crystal structure, Noisy pulse correlation detection signal, Combined with PCA scale invariant feature transform (SIFT) algorith