APPLICATION OF THE FOURIER AND WAVELET TRANSFORMS IN NOISE REDUCTION OF THE OUT OF THE ORDINARY DATA
Tafreshi M.A.H., Sadeghi Yahya · 2006
In this article the noise reduction of the experimental data by the Fourier and the wavelet transforms has been investigated. Using both simulated and experimental data (from the plasma focus facility, Dena), the sensitive features of the application of the Fourier transform are visualized and discussed. Then, the main idea of the wavelet transform and the results of the noise reduction with this transform are presented. Due to this investigation, for the cases such as the current derivative of the Dena facility, where the reliability of the Fourier transform can be doubtful, the wavelet transform can be considered as a more accurate alternative approach.