说明：  基于小波多分辨率分析的思想，提出一种降低混沌信号噪声的方法。首先对一个混沌时间序列进行小波分析，得到信 号在各个尺度上的不同特性;再对各个高频细节信号进行二次小波去噪;最后对二次小波去噪后的信号进行线性叠加，达到 提取真实信号的目的
(Based on the idea of wavelet multiresolution analysis, a method to reduce the noise of chaotic signal is proposed. First, the wavelet analysis of a chaotic time series is carried out to get the letter. The different characteristics of the signal on different scales, and then the two high-frequency wavelet denoising is done for each high-frequency detail signal. Finally, the two wavelet denoising signal is superimposed linearly.)