Broadband Laser Doppler Frequency Shift Emulator for Satellite Laser Communication
IEEE Photonics Journal, 2019 A novel emulator of laser Doppler frequency shift (DFS) for satellite laser communication based on microwave photonics technology is proposed and experimentally demonstrated.
Jinye Li +6 more
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Motion Model of Floating Weather Sensing Node for Typhoon Detection
Complex System Modeling and Simulation, 2022 To improve the accuracy of typhoon prediction, it is necessary to detect the internal structure of a typhoon. The motion model of a floating weather sensing node becomes the key to affect the channel frequency expansion performance and communication ...
Hui Lu, Xinyu Dong, Xianbin Cao
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Acousto-optic frequency switching for single-camera planar Doppler velocimetry [PDF]
, 2001 A single-camera Planar Doppler velocimetry system has been demonstrated, in which illumination beams at two closely-spaced optical frequencies are derived from a single Argon-ion laser.
Nobes, David S. +5 more
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Single camera 3D planar velocity measurements using imaging fibre bundles and two frequency Planar Doppler Velocimetry (2nu-PDV) [PDF]
, 2005 3D planar flow-field measurements are made using multiple imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a CCD camera.
Charrett, Thomas O. H. +5 more
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Metasurface Doppler Cloak for Broadband Radar Stealth
Advanced Physics ResearchConcealing an aircraft is a multi‐faceted endeavor, notably involving radio and infrared frequencies. In a radar stealth context, it often translates to the reduction of the radar cross‐section (RCS).
Tanguy Lopez +3 more
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Performance Analysis of OTFS Framework Over Wideband Time-Varying Channels
IEEE Open Journal of the Communications SocietyOrthogonal Time Frequency Space (OTFS) modulation has garnered significant attention for its robustness in high-mobility communication scenarios. Existing research predominantly focuses on narrowband time-varying channels, where Doppler effects manifest ...
Ziqiang Gao +8 more
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Modeling and analysis for dynamical Doppler shifts on terahertz communication signals propagating in inhomogeneous hypersonic plasma sheath [PDF]
AIP AdvancesPrevious studies have shown that terahertz (THz) signals could penetrate hypersonic plasma sheaths. Thus, it is considered to be a potential solution to the “blackout” problem.
Xiangmeng Lin +4 more
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IEEE Access, 2022 The Doppler effect critically degrades the performance of orthogonal frequency division multiplexing (OFDM) systems in general. This problem is significantly worse for underwater acoustic (UWA) communication systems due to the distinct characteristics of
Van Duc Nguyen +3 more
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TechnologiesSpace gravitational wave detection is performed via a laser interferometry system across hundreds of thousands to millions of kilometers for picometer-level displacement measurement, using phasemeters to read gravitational wave-induced displacement ...
Zhenbang Xie +3 more
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Area spectral efficiency of soft-decision space–time–frequency shift-keying-aided slow-frequency-hopping multiple access [PDF]
, 2012 Slow-frequency-hopping multiple access (SFHMA) can provide inherent frequency diversity and beneficially randomize the effects of cochannel interference.
Ngo, Hoang Anh +3 more
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