小波分析算法，用于信号的去噪，将原始信号分解为多个尺度的小波系数进行滤波-Wavelet analysis algorithm for denoising signals, the original signal is decomposed into a plurality of scale wavelet filter coefficients

小波包分析提取振动信号中的特征频率，sar图像去噪的几种新的方法，IMC-PID是利用内模控制原理来对PID参数进行计算。- Wavelet packet analysis to extract vibration signal characteristic frequency, Several new methods sar image denoising, The IMC- PID is using the internal model control principle for PID p