CL多小波结合改进RLS滤波器的信号去噪方法

Signal Denoising Method of CL Multi-Wavelet Combining with the Improved RLS Filter

提出了CL多小波结合改进RLS滤波器的信号去噪方法,该方法将信号划分到不同的频段上,分别用不同起始步长的改进RLS滤波器对系数进行去噪,以提高改进RLS滤波器的去噪效果.仿真结果表明:采用CL多小波结合改进RLS滤波器方法的去噪效果,优于单独使用改进RLS滤波器和CL多小波阈值法的去噪效果.

The signal denoising method which combined CL multi-wavelet with the improved RLS filter was proposed.The signal was segmented into different frequent bands.Then different initial step length of the improved RLS filter was respectively used for signal denoising to enhance the denoising effect of the improved RLS filter.The simulation result indicated that the proposed method was obviously better than the improved RLS filter or the CL multi-wavelet threshold value method alone.