Results 31 to 40 of about 790,815 (305)
BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence [PDF]
, 2009 Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations.
Ghassemlooy, Zabih +3 more
core +1 more source
Remote Sensing, 2022 It is very useful for adaptive optics (AO) systems to have appropriate knowledge of optical turbulence. However, due to the limitations of space and time, it is difficult to obtain turbulence parameters, especially in the far sea area. In this paper, the
Manman Xu +3 more
doaj +1 more source
Parameter Optimization Based BPNN of Atmosphere Continuous-Variable Quantum Key Distribution
Entropy, 2019 The goal of continuous variable quantum key distribution (CVQKD) is to be diffusely used and adopted in diverse scenarios, so the adhibition of atmospheric channel will play a crucial part in constituting global secure quantum communications. Atmospheric
Yu Su, Ying Guo, Duan Huang
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Triple cascade behaviour in QG and drift turbulence and generation of zonal jets [PDF]
, 2009 We study quasigeostrophic (QG) and plasma drift turbulence within the Charney-Hasegawa-Mima (CHM) model. We focus on the zonostrophy, an extra invariant in the CHM model, and on its role in the formation of zonal jets.
Nazarenko, Sergey +3 more
core +1 more source
Average Polarization of Electromagnetic Gaussian Schell-Model Beams through Anisotropic Non-Kolmogorov Turbulence [PDF]
Radioengineering, 2016 Polarization properties of electromagnetic Gaussian Schell-model beams propagating through the anisotropic non-Kolmogorov turbulence of marine-atmosphere channel are studied based on the cross-spectral density matrix.
Yuanhang Zhao, Yixin Zhang, Qiu Wang
doaj
Investigating Alfvénic wave propagation in coronal open-field regions [PDF]
, 2015 The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves.
Morton, Richard +2 more
core +1 more source
IEEE Access, 2019 The orbital angular momentum (OAM) wireless communication technology is widely studied in recent literatures. But the atmospheric turbulence is rarely considered in analyzing the capacity of OAM-based millimeter wave (OAM-mmWave) communication systems ...
Hanqiong Lou, Xiaohu Ge, Qiang Li
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Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data
Solar-Terrestrial Physics, 2022 The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y. +5 more
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Two-dimensional magnetohydrodynamic turbulence in the small magnetic Prandtl number limit [PDF]
, 2012 In this paper we introduce a new method for computations of two-dimensional magnetohydrodynamic (MHD) turbulence at low magnetic Prandtl number $\Pra=\nu/\eta$.
Tobias, Steve, Dritschel, David Gerard
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Applied Sciences, 2018 The satellite-to-ground optical communication system suffers from atmosphere turbulence severely. It is well-known that the coherent detection can increase the receiver sensitivity and performing aperture averaging can reduce the scintillation caused by ...
Hongwei Li +5 more
doaj +1 more source