Results 11 to 20 of about 467 (179)
Programmable photonic unitary circuits for light computing. [PDF]
NanophotonicsAbstract Unitarity serves as a fundamental concept for characterizing linear and conservative wave phenomena in both classical and quantum systems. Developing platforms that perform unitary operations on light waves in a universal and programmable manner enables the emulation of complex light–matter interactions and the execution of general‐purpose ...
Kim K +5 more
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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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Parametric Decomposition of Pulsed Lidar Signals with Noise Corruption Using FRFT Spectrum Analysis
Remote Sensing, 2021 The parametric decomposition of full-waveform Lidar data is challenging when faced with heavy noise scenarios. In this paper, we report a fractional Fourier transform (FRFT)-based approach for accurate parametric decomposition of pulsed Lidar signals ...
Fan Xu +5 more
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IET Radar, Sonar & Navigation, 2023 Traditional direction of arrival (DOA) estimation methods of wideband linear frequency modulated (LFM) signal based on the fractional Fourier transform (FRFT) highly depend on the peak value of LFM signal in the FRFT domain.
Jun Zhong +4 more
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Applied Sciences, 2021 In this paper, a method for automatically separating the mixed circular fringe patterns based on the fractional Fourier transform (FrFT) analysis is proposed.
Hsuan-Ting Chang +5 more
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Results in Optics, 2021 In this paper, a novel scheme for multidepth three dimensional (3D) object authentication is presented based on partial fractional Fourier transform spectrum (FrFT) and phase retrieval technique.
Qu Wang, Deping Xiong, Liang Lei
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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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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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Sparse representation-based DOA estimation of coherent wideband LFM signals in FRFT domain
EURASIP Journal on Wireless Communications and Networking, 2017 In this paper, the method of direction-of-arrival (DOA) estimation for wideband signals based on sparse representation of FRFT domain is proposed by using the excellent convergence of FRFT to LFM signals.
Bo Li, Xiuhong Wang
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Enhanced Fast Fractional Fourier Transform (FRFT) Scheme Based on Closed Newton-Cotes Rules
AxiomsThe paper presents an enhanced numerical framework for computing the one-dimensional fast Fractional Fourier Transform (FRFT) by integrating closed-form Composite Newton-Cotes quadrature rules.
Aubain Nzokem +2 more
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