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The Fast Fourier Transform is an important method in analysis patterns. In this paper, the FFT is used to the images of the patterns to analyze the competition of the modes and the evolution of the patterns. With the increase of applied voltage the competition between patterns are obtained in dielectric barrier discharge system with two liquid electrodes at the pressure p = 0.3 atm and p = 0.2 atm...
Fast Fourier transform of the time series is an important way to analyze the periodic and chaos behavior of the signal. In this paper, the light signals of two types of ring-shaped spots, which are found in dielectric barrier discharge in the mixture of air and argon with two liquid electrodes, are recorded and compared through fast Fourier transform. It can be seen from the fast Fourier transform...
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