基于时域积累平均和小波多分辨率分析方法的弱信号去噪

Weak Signal De-noising Based on Accumulated Average in Time-domain and Multi-resolution Analysis Methods

当传感器采集到的信号信噪比很小时,传统的微弱信号测量方法不太理想。提出了对传感器采集到的微弱信号进行累加平均和小波变换中的多分辨率分析方法相结合去噪。通过仿真分析,表明该方法可以有效地提取出有用信号,抑制噪声。

When the noise ratio of the signal from the sensor, the traditional measurement method of the weak signal was not perfect. The method that combine the cumulative average and multi-resolution analysis in wavelet transform was presented which can de-noise the weak signal collected from the sensor. The simulation analysis shows that the method can extract the useful signal effectively and restrain the noise.