Results 1 to 10 of about 3,627 (192)
Applied Sciences, 2021 Fractional Fourier transform (FrFT) is a useful tool to detect linear frequency modulated (LFM) signal. However, the detection performance of the FrFT-based method will deteriorate drastically in underwater multi-path environment.
Zhichen Zhang, Haiyan Wang, Haiyang Yao
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Fractional Fourier transforms of vortex Hermite-cosh-Gaussian beams
Results in Optics, 2021 In this paper, we investigate the propagation properties of a vortex Hermite-cosh-Gaussian beam (vHChGB) passing through a fractional Fourier transform (FRFT) optical system.
E.M. El Halba, Z. Hricha, A. Belafhal
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Hyperbolic FRFT‐FBMC for 5G signals [PDF]
IET Communications, 2019 This study considers a novel type of signal for 5G communications based on filter bank multi‐carrier‐quadrature amplitude modulation (FBMC‐QAM). In this new method, the innovative type of fractional Fourier transform on the basis of hyperbolic chirps that denominated as hyperbolic fractional Fourier transform (FRFT) is implemented.
Mohammad Reza Mousavi +2 more
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The Solvability of a Class of Convolution Equations Associated with 2D FRFT
Mathematics, 2020 In this paper, the solvability of a class of convolution equations is discussed by using two-dimensional (2D) fractional Fourier transform (FRFT) in polar coordinates. Firstly, we generalize the 2D FRFT to the polar coordinates setting.
Zhen-Wei Li, Wen-Biao Gao, Bing-Zhao Li
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Fractional Fourier Transform-Based Tensor RX for Hyperspectral Anomaly Detection
Remote Sensing, 2022 Anomaly targets in a hyperspectral image (HSI) are often multi-pixel, rather than single-pixel, objects. Therefore, algorithms using a test point vector may ignore the spatial characteristics of the test point.
Lili Zhang +3 more
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Investigation of Chaotic Image Encryption in Spatial and FrFT Domains for Cybersecurity Applications
IEEE Access, 2020 The need for cybersecurity increases to protect the exchange of information for improving the data privacy. This paper presents an investigation of the encryption efficiency of the chaotic-based image block ciphering in the spatial and Fractional Fourier
Osama S. Faragallah +8 more
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Mitigation of Fiber Nonlinearity Effects in Ultra High-Dense WDM System by Using Fractional Fourier Transform for 32 Channel System [PDF]
Engineering and Technology Journal, 2016 The optical signal is severely degraded when transmitted in the fiber due to both the linear and nonlinear distortions. It is well known that, the linear distortions in single mode fiber include chromatic dispersion (CD) and polarization-mode dispersion (
Ali Y. Fattah, Saif Hussam Abdul-Wahed
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EURASIP Journal on Audio, Speech, and Music Processing, 2009 Fractional Fourier transform (FrFT) has been proposed to improve the time-frequency resolution in signal analysis and processing. However, selecting the FrFT transform order for the proper analysis of multicomponent signals like speech is still debated.
Yin Hui, Nadeu Climent, Hohmann Volker
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Estimation Method of SAR Doppler Frequency Rate Based on FrFT
Xibei Gongye Daxue Xuebao, 2020 Due to the problem that the existing Doppler frequency rate estimation method is limited by the estimation accuracy, a novel estimation method of Doppler frequency rate is proposed.
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Using EMD-FrFT filtering to mitigate high power interference in chirp tracking radars [PDF]
, 2011 This letter presents a new signal processing subsystem for conventional monopulse tracking radars that offers an improved solution to the problem of dealing with manmade high power interference (jamming).
Elgamel, Sherif, Soraghan, John
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