Research on Noise Processing Method for Long Wave Communication
Yongbin Wang · Computer and Digital Engineering · 2013
The signal of long wave communication was influenced by the atmospheric noise of the channel,which was non-Gausssian and non-stationary typically,and conventional denoising method failed on it.In this paper,the method of median filter and wavelet threshold denoising to suppress the VLF atmospheric noise was proposed.The SNR improvement factor was chosen as the indication of the performance improvement,and the simulation was implemented on Matlab platform.The simulation result of this method shown that the new approach could remove VLF channal noises effectively and improve the system performance.