Automatic Detection and Suppression of Parasitic Chirp Signals in the Intermediate Time–Frequency Domain

  • P. E. GolubtsovEmail author
  • I. I. Morozov


The problem of automatic parasitic chirp components detection and suppression in a digital signal is considered. The detection is based on the calculation of the discrete Wigner distribution accompanied by the Hough transform. The filtration is achieved by a series of discrete fractional Fourier transforms converting the signal to special coordinates, where the entire energy of the parasitic signals is accumulated at a few samples and then reset. The main novelty is the utilization of new construction of discrete fractional Fourier transform coordinated with the discrete Wigner distribution. The advantages of the proposed approach are illustrated by the simulations.


Chirp signal Fractional Fourier transform Wigner distribution Hough transform 



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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.JSC Radio Engineering Corporation “Vega”MoscowRussian Federation

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