基于互功率谱的时延估计，粒子图像分割及匹配均为自行编制的子例程，包含特征值与特征向量的提取、训练样本以及最后的识别。- Based on the time delay estimation of power spectrum, Particle image segmentation and matching subroutines themselves are prepared, Contains the eigenvalue and eigenvector extraction, the tr