匹配追踪算法在振动信号去噪中的应用

针对振动信号在采集过程中易受噪声干扰的情况，提出了一种采用匹配追踪算法来处理含噪的机械振动信号的方法，通过稀疏分解与重构对振动信号进行去噪。仿真实验表明该算法不仅可以有效地抑制噪声，提高信噪比，还能够获得较小的最小均方误差值，较好地保持振动信号的特征形态。

Application of Matching Pursuit Algorithm in Vibration Signal De-noising

Vibration signals were usually interfered by noises during signal acquisition process. A matching pursuit filter approach was put forward to process mechanical vibration signals containing noise. Sparse decomposition and reconstruction was carried out on the vibration signal de-noising. The experimental results show that this approach not only can effectively restrain noises and increase the SNR, but also be able to obtain the smaller MSE and keep the shape feature of the vibration signal unchanged.