Results 11 to 20 of about 40,057 (229)

Satellite based band features change detection using discrete fractional Fourier transform [PDF]

open access: greenعلوم زمین خوارزمی, 2023
Changes in earth surface features may occur due to internal or external changes.  However, regardless of the origin of the change, detection and monitoring of these changes will contribute to environmental planning for sustainable development and optimal
raziyeh safa   +2 more
doaj   +1 more source

Integrated optical wave analyzer using the discrete fractional Fourier transform [PDF]

open access: greenJournal of the Optical Society of America B
Within the expansive domain of optical sciences, achieving the precise characterization of light beams stands as a fundamental pursuit, pivotal for various applications, including telecommunications and imaging technologies.
A. R. Urz'ua   +2 more
semanticscholar   +3 more sources

Analysis of parameter estimation using the sampling-type algorithm of discrete fractional Fourier transform

open access: diamondDefence Technology, 2014
Parameter estimation is analyzed using two kinds of common sampling-type DFRFT (discrete fractional Fourier transform) algorithm. A model of parameter estimation is established. The factors which influence estimation accuracy are analyzed.
Bing Deng, Jun-bao Luan, Shi-qi Cui
doaj   +2 more sources

Operator theory-based discrete fractional Fourier transform [PDF]

open access: yesSignal, Image and Video Processing, 2019
The fractional Fourier transform is of importance in several areas of signal processing with many applications including optical signal processing. Deploying it in practical applications requires discrete implementations, and therefore defining a discrete fractional Fourier transform (DFRT) is of considerable interest.
Aykut Koç
semanticscholar   +3 more sources

An Efficient Hamiltonian For Discrete Fractional Fourier Transform

open access: green, 2008
{"references": ["S. C. Pei and M. H. Yeh, \"Improved discrete fractional Fourier\ntransform,\" Optics Letters, vol. 22, pp. 1047-1049, July 15 1997.", "Ahmed I. Zayed, \"Relationship between the Fourier and Fractional\nFourier Transforms\", IEEE Signal Processing Letters, vol. 3, no. 12,\nDecember 1996.", "C. Candan, M.A. Kutay, H.M.
Sukrit Shankar   +3 more
openalex   +3 more sources

Review of Computing Algorithms for Discrete Fractional Fourier Transform [PDF]

open access: hybridResearch Journal of Applied Sciences, Engineering and Technology, 2013
Discrete Fractional Fourier Transform (DFRFT) has received lots of attention in last two decades because of its superior benefits and wide applications in various fields. In this study we present a comparative analysis of the most famous algorithms for the computation of DFRFT.
M. Irfan, Liying Zheng, Haroon Shahzad
openalex   +2 more sources

Rational-Ordered Discrete Fractional Fourier Transform

open access: green, 2012
Publication in the conference proceedings of EUSIPCO, Bucharest, Romania ...
Wen-Liang Hsue, Soo‐Chang Pei
openalex   +2 more sources

Sparse Discrete Fractional Fourier Transform and Its Applications

open access: yesIEEE Transactions on Signal Processing, 2014
The discrete fractional Fourier transform is a powerful signal processing tool with broad applications for nonstationary signals. In this paper, we propose a sparse discrete fractional Fourier transform (SDFrFT) algorithm to reduce the computational complexity when dealing with large data sets that are sparsely represented in the fractional Fourier ...
Shengheng Liu   +6 more
semanticscholar   +2 more sources

Induction Motor Fault Diagnosis Based on Discrete Fractional Fourier Transform of Stator Current [PDF]

open access: goldSensors and materials
Feng‐Chang Gu   +4 more
semanticscholar   +2 more sources

Discrete Fourier Transforms of Fractional Processes [PDF]

open access: green, 1999
Discrete Fourier transforms (dft's) of fractional processes are studied and an exact representation of the dft is given in terms of the component data. The new representation gives the frequency domain form of the model for a fractional process, and is particularly useful in analyzing the asymptotic behavior of the dft and periodogram in the ...
Peter C.B. Phillips
openalex   +2 more sources

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