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Gabor transform and continuous wavelet transform for model pulsed signals

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Abstract

A model of a pulsed signal in the form of a superposition of elementary nonstationary signals is considered. The parameters of such a superposition are chosen so that signal amplitude A(t) strongly varies with time. For such a signal, the analytic expression for the Gabor transform (GT) and continuous wavelet transform (CWT) using the mother Morlet wavelet are analyzed. A criterion is proposed for the matched behaviors of GT and CWT with signal amplitude A(t). The advantages of the CWT adaptively selecting the window size over the GT whose explicit form depends on the window size are demonstrated. The proposed method can be used for analysis of many transient stages of time-dependent signals in various branches of physics.

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Authors and Affiliations

  1. St. Petersburg State Polytechnical University, ul. Politekhnicheskaya 29, St. Petersburg, 195251, Russia

    D. A. Andreev, S. V. Bozhokin, I. D. Venevtsev & K. T. Zhunusov

Authors
  1. D. A. Andreev
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  2. S. V. Bozhokin
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  3. I. D. Venevtsev
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  4. K. T. Zhunusov
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Corresponding author

Correspondence to S. V. Bozhokin.

Additional information

Original Russian Text © D.A. Andreev, S.V. Bozhokin, I.D. Venevtsev, K.T. Zhunusov, 2014, published in Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 84, No. 10, pp. 10–15.

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Andreev, D.A., Bozhokin, S.V., Venevtsev, I.D. et al. Gabor transform and continuous wavelet transform for model pulsed signals. Tech. Phys. 59, 1428–1433 (2014). https://doi.org/10.1134/S1063784214100065

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  • DOI: https://doi.org/10.1134/S1063784214100065

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