Results 81 to 90 of about 752 (176)
Journal of Harbin University of Science and Technology, 2017 In fault diagnosis of rolling bearings，the fault signal is easy to be interfered by the ambient noise， Therefore，an approach based on Fractional Fourier Transform( FＲFT) is studied in this research to collect valid data of rolling bearing fault.
SHAO Yan, LU Di, YANG Guang-xue
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Design and Detection of Multilinear Chirp Signals for Underwater Acoustic Sensor Networks
International Journal of Distributed Sensor Networks, 2015 In Underwater Acoustic Sensor Networks (UW-ASNs), some key problems have attracted more and more attention, including power consumption, performance of multiple access, and complexity of node.
En Cheng, Shengli Chen, Fei Yuan
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An Algorithm for Target Parameter Estimation Based on Fractional Fourier and Keystone Transforms
Leida xuebao, 2014 An important standard to measure the effectiveness of radar acquisition systems is the accuracy of target parameter estimation. To solve the estimation problem, the echo model of moving targets is established and the FRactional Fourier Transform (FRFT ...
Tian Rui-qi +3 more
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Chirp Signal Detection Performance Analysis Based on Generalized Stochastic Resonance
工程科学与技术, 2014 :For estimating the parameter information of target chirp signal within multiple chirp signal and noise,which is the conventional familiar model in signal processing,the stochastic resonance (SR) in over-damped bistable system driven by the multiple ...
王会琦, 吕王勇, 彭皓
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Fractal and FractionalTo address the limitations of traditional tumor diagnostic methods in image feature extraction and model generalization, this study innovatively proposes a synergistic diagnostic model that integrates fractional Fourier transform (FrFT) and error back ...
Xuanyu Liu +3 more
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Holographic data storage with fractional Fourier transform [PDF]
, 2001 For holographic data storage we applied fractional Fourier transform (FRFT) instead of the conventional Fourier transform. In comparison to the conventional Fourier transform, the FRFTs shifting rule makes the spectral distribution more uniform and the ...
Bae, YS, Jin, SI, Lee, Soo-Young
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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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Detection of Left-Sided and Right-Sided Hearing Loss via Fractional Fourier Transform
Entropy, 2016 In order to detect hearing loss more efficiently and accurately, this study proposed a new method based on fractional Fourier transform (FRFT). Three-dimensional volumetric magnetic resonance images were obtained from 15 patients with left-sided hearing ...
Shuihua Wang +8 more
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Time Delay Model of Fractional Fourier Transform and the Application in Signal Filtering [PDF]
, 2011 Various frequency bands of noises are contained in the actual signal. And it's difficult to eliminate the noise portion, which has a time delay and same spectrum with the original signal with conventional filtering methods.
Yuan Gan Wang, Hong Lin Yu, Xin Yu Liang
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Acquisition algorithm for BOC signals in high dynamic environment
Tongxin xuebao, 2019 As the synchronization of binary offset carrier (BOC) signals couldn’t be realized in high dynamic environment by traditional acquisition algorithms,an acquisition algorithm based on fractional Fourier transform (FRFT) and discrete polynomial-phase ...
Yi PAN +3 more
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