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On the class of uncertainty inequalities for the coupled fractional Fourier transform [PDF]

open access: goldJournal of Inequalities and Applications, 2022
The coupled fractional Fourier transform F α , β $\mathcal {F}_{\alpha ,\beta}$ is a two-dimensional fractional Fourier transform depending on two angles α and β, which are coupled in such a way that the transform parameters are γ = ( α + β ) / 2 $\gamma
Firdous A. Shah   +3 more
doaj   +3 more sources

Fractional Fourier Transform: Main Properties and Inequalities

open access: yesMathematics, 2023
The fractional Fourier transform is a natural generalization of the Fourier transform. In this work, we recall the definition of the fractional Fourier transform and its relation to the conventional Fourier transform.
Mawardi Bahri   +1 more
doaj   +2 more sources

Experimental Implementation of the Optical Fractional Fourier Transform in the Time-Frequency Domain [PDF]

open access: hybridPhysical Review Letters, 2023
The fractional Fourier transform (FrFT), a fundamental operation in physics that corresponds to a rotation of phase space by any angle, is also an indispensable tool employed in digital signal processing for noise reduction. Processing of optical signals
Bartosz Niewelt   +6 more
openalex   +3 more sources

Color image encryption based on chaotic compressed sensing and two-dimensional fractional Fourier transform. [PDF]

open access: yesSci Rep, 2020
Combining the advantages of structured random measurement matrix and chaotic structure, this paper introduces a color image encryption algorithm based on a structural chaotic measurement matrix and random phase mask.
Wang X, Su Y.
europepmc   +2 more sources

Approximation Theorems Associated with Multidimensional Fractional Fourier Transform and Applications in Laplace and Heat Equations

open access: yesFractal and Fractional, 2022
In this paper, we establish two approximation theorems for the multidimensional fractional Fourier transform via appropriate convolutions. As applications, we study the boundary and initial problems of the Laplace and heat equations with chirp functions.
Yinuo Yang   +3 more
doaj   +2 more sources

Tunable fractional Fourier transform implementation of electronic wave functions in atomically thin materials [PDF]

open access: yesBeilstein Journal of Nanotechnology, 2018
A tunable fractional Fourier transform of the quantum wave function of electrons satisfying either the Schrödinger or the Dirac equation can be implemented in an atomically thin material by a parabolic potential distribution applied on a direction ...
Daniela Dragoman
doaj   +2 more sources

The minimality of mean square error in chirp approximation using fractional fourier series and fractional fourier transform [PDF]

open access: yesScientific Reports, 2022
Chirps are familiar in nature, have a built-in resistance to noise and interference, and are connected to a wide range of highly oscillatory processes.
Omar T. Bafakeeh   +9 more
doaj   +2 more sources

Study on the Mainardi beam through the fractional Fourier transforms system [PDF]

open access: diamondКомпьютерная оптика, 2018
In this paper, we introduced the Mainardi beam and indicated its attributes under the Fractional Fourier transform for power variations of Fractional Fourier transform.
Forouzan Habibi   +2 more
doaj   +2 more sources

Hyers-Ulam-Mittag-Leffler stability of fractional differential equations with two caputo derivative using fractional fourier transform

open access: yesAIMS Mathematics, 2022
In this paper, we discuss standard approaches to the Hyers-Ulam Mittag Leffler problem of fractional derivatives and nonlinear fractional integrals (simply called nonlinear fractional differential equation), namely two Caputo fractional derivatives using
Anumanthappa Ganesh   +6 more
doaj   +2 more sources

On the fractional Fourier and continuous fractional wave packet transforms of almost periodic functions [PDF]

open access: goldJournal of Inequalities and Applications, 2017
We state the fractional Fourier transform and the continuous fractional wave packet transform as ways for analyzing persistent signals such as almost periodic functions and strong limit power signals. We construct frame decompositions for almost periodic
Banu Ünalmış Uzun
doaj   +2 more sources

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