小波消噪在振动信号处理中的应用

信噪分离是小波分析中的一个有效的信号检测方法。本文在阐述了小波分析及消噪的小波理论的基础上 ,给出了从噪声污染信号中恢复原信号的实例 ,并与傅立叶分析消噪进行了比较 ,结果表明对于非平稳振动信号小波消噪的效果明显优于傅立叶变换。

De  noising is a new signal detection method in wavelet analysis.On the base of briefly introducing the wavelet analysis theory and wavelet de  noising,some examples of signal recovery with white  noise heavily polluted are given in this paper,as a compare with FFT de  noising,wavelet de  noising is very efficient than FFT for the unsteady vibration signal.

辽宁省科学技术基金资助项目 (0 0 2 0 1 6)