Application of Fractional Fourier Transform to Hologram Formation of a Moving Acoustic Source
Fractal and FractionalThis paper examines how the fractional Fourier transform (FrFT) can be used to form and analyze acoustic holograms produced by a moving, linear, frequency-modulated (LFM) source in a shallow water waveguide.
Sergey Pereselkov +5 more
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The Fractional Fourier Transform and Its Application to Energy Localization Problems
EURASIP Journal on Advances in Signal Processing, 2003 Applying the fractional Fourier transform (FRFT) and the Wigner distribution on a signal in a cascade fashion is equivalent to a rotation of the time and frequency parameters of the Wigner distribution.
ter Morsche Hennie G, Oonincx Patrick J
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High-sensitive state perception method for inverter-fed machine turn insulation based on FrFT-Mel
Global Energy InterconnectionAmidst the swift advancement of new power systems and electric vehicles, inverter-fed machines have progressively materialized as a pivotal apparatus for efficient energy conversion.
Ruitian Fan +5 more
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Maejo International Journal of Science and Technology, 2009 The behaviour of harmonic and chirp functions was studied on the time-frequency plane with the help of fractional Fourier transform (FRFT). Studies were also carried out through simulation with different numbers of samples of the functions. Variations were observed in the maximum side-lobe level (MSLL), half main-lobe width (HMLW) and side-lobe fall ...
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Ultrasonic Detection of Erosion on Pipe Elbow based on FrFT Filtering
Shiyou jixie, 2022 As a low cost and high-efficiency nondestructive testing technology, ultrasonic non-axisymmetric exciting guided wave can detect the thinned section of pipe elbow.
Li Ning +4 more
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A Novel Doppler Rate Estimator Based on Fractional Fourier Transform for High-Dynamic GNSS Signal
IEEE Access, 2019 When the fractional Fourier transform (FRFT) is introduced into the weak and high-dynamic global navigation satellite system (GNSS) signal acquisition, the 2-D search cell will be transferred to a 3-D one with respect to the code chip, the Doppler shift,
Yiran Luo +5 more
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DFRFT: A Classified Review of Recent Methods with Its Application
Journal of Engineering, 2013 In the literature, there are various algorithms available for computing the discrete fractional Fourier transform (DFRFT). In this paper, all the existing methods are reviewed, classified into four categories, and subsequently compared to find out the ...
Ashutosh Kumar Singh, Rajiv Saxena
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The FrFT convolutional face: toward robust face recognition using the fractional Fourier transform and convolutional neural networks [PDF]
Science China Information Sciences, 2019 Wu, Xin +3 more
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Hyperspectral Image Classification Based on Fractional Fourier Transform
Remote SensingTo effectively utilize the rich spectral information of hyperspectral remote sensing images (HRSIs), the fractional Fourier transform (FRFT) feature of HRSIs is proposed to reflect the time-domain and frequency-domain characteristics of a spectral pixel ...
Jing Liu, Lina Lian, Yuanyuan Li, Yi Liu
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Parameter Estimation of LFM Signals Based on PID-PSO-FRFT
Fractal and FractionalThe fractional Fourier transform (FRFT) serves as an effective tool for linear frequency modulated (LFM) signal parameter estimation, whose performance depends on the search efficiency for the optimal transform order.
Xuelian Liu +5 more
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