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计算机应用研究 2012
STFT time-frequency analysis method of fractionallower-order alpha stable distribution
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Abstract:
It is not enough that only using a dimension analysis method for non-stable signal in alpha stable distribution noise, and can need a two-dimensions time-frequency one. This paper proposed short Fourier transformSTFTtime-frequency analysis method of fractional lower-order alpha stable distribution based on conventional STFT. Simulations show that the proposed method has more excellent performance than conventional STFT in time-frequency analyzing of alpha stable distribution process and is a new one in time-frequency domain research of alpha stable distribution.