A Method Eliminating the Clutter in Analog Voice Signals Based on Mode Decomposition and Principal Component Extraction
The analog voice communication system plays an important role in battlefield command due to its high equipment reliability and simple technology system.The analog voice signal clutter caused by noise from radio voice acquisition equipment and environmental equipment affects the demodulation and listening of voice signals.In view of the above problem,this paper uses mode de-composition to remove the single tone component in the signal,and uses decomposition and recon-struction of fast Fourier transform(FFT)to further suppress the noise,realizes the clutter elimi-nation of analog voice signals.Simulation experiments show that the method proposed in this paper can further improve the quality of demodulated voice.
万方数据
维普
