小波包分解Welch平均法在焊接电弧声功率谱估计中的应用-Application of wavelet packet Welch method in the welding arc sound power spectrum estimation

粒子图像分割及匹配均为自行编制的子例程，小波包分析提取振动信号中的特征频率，计算目标和海洋回波的功率谱密度。- Particle image segmentation and matching subroutines themselves are prepared, Wavelet packet analysis to extract vibration signal characteristic frequency, Calculating a target and ocean echo po

基于互功率谱的时延估计，关于小波的matlab复合分析，计算两个矩阵之间的欧氏距离。- Based on the time delay estimation of power spectrum, Matlab wavelet analysis on complex, Calculation of the Euclidean distance between the two matrices.