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Monte-Carlo-based optical wireless underwater channel modeling with oceanic turbulence
, 2020Underwater optical wireless communication has attracted widespread attention due to its high bandwidth. The complex compositions of seawater affect the transmission of underwater optical signals. However, for underwater optical wireless channel modeling,
Jianlei Zhang +4 more
semanticscholar +1 more source
Rogue waves in oceanic turbulence
Physica D: Nonlinear Phenomena, 2008A stochastic model of wave groups is presented to explain the occurrence of exceptionally large waves, usually referred to as rogue waves. The model leads to the description of the non-Gaussian statistics of large waves in oceanic turbulence and to a new asymptotic distribution of their crest heights in a form that generalizes the Tayfun model. The new
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, 2020
We theoretically analyze the average bit error rate (ABER) performance of underwater wireless optical communication (UWOC) systems using rectangular quadrature-amplitude modulation (QAM) over strong oceanic turbulence channels with pointing error.
Yuqing Fu +4 more
semanticscholar +1 more source
We theoretically analyze the average bit error rate (ABER) performance of underwater wireless optical communication (UWOC) systems using rectangular quadrature-amplitude modulation (QAM) over strong oceanic turbulence channels with pointing error.
Yuqing Fu +4 more
semanticscholar +1 more source
Langmuir turbulence in the ocean
Journal of Fluid Mechanics, 1997Solutions are analysed from large-eddy simulations of the phase-averaged equations for oceanic currents in the surface planetary boundary layer (PBL), where the averaging is over high-frequency surface gravity waves. These equations have additional terms proportional to the Lagrangian Stokes drift of the waves, including vortex and ...
McWilliams, James C. +2 more
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Radial phased-locked multi-Gaussian Schell-model beam array and its properties in oceanic turbulence
, 2020The radial phased-locked multi-Gaussian Schell-model (MGSM) beam array composed by the N MGSM beamlets is first given to describe a new laser array. The evolution properties of radial phased-locked MGSM beam array in free space and oceanic turbulence are
Dajun Liu +4 more
semanticscholar +1 more source
Optics Communications, 2019
Based on the extended Huygens–Fresnel principle, the cross-spectral density function of a partially coherent anomalous hollow vortex beam (AHVB) propagating in underwater oceanic turbulence has been derived, and the influences of the beam parameters and ...
Dajun Liu +4 more
semanticscholar +1 more source
Based on the extended Huygens–Fresnel principle, the cross-spectral density function of a partially coherent anomalous hollow vortex beam (AHVB) propagating in underwater oceanic turbulence has been derived, and the influences of the beam parameters and ...
Dajun Liu +4 more
semanticscholar +1 more source
1980
Abstract The variability of the ocean over a wide range of scales, from the megameter to the millimeter, is examined in the light of turbulence theory. The geophysical constraints which arise from the Earth's rotation and curvature and from the stratification are discussed with emphasis on the role they can play at different scales in inducing ...
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Abstract The variability of the ocean over a wide range of scales, from the megameter to the millimeter, is examined in the light of turbulence theory. The geophysical constraints which arise from the Earth's rotation and curvature and from the stratification are discussed with emphasis on the role they can play at different scales in inducing ...
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Turbulence and microstructure in the ocean
Uspekhi Fizicheskih Nauk, 1973The possibility of distinguishing between turbulence and wave fluctuations of the hydrodynamic fields is discussed. Possible mechanisms of generation of turbulence in the ocean are considered, and theoretical information as well as experimental data are given concerning the spectra of small-scale turbulence in the upper layer of the ocean. Intermittent
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Properties of partially coherent elegant Laguerre-Gaussian beam in free space and oceanic turbulence
, 2020The analytical expression of partially coherent elegant Laguerre-Gaussian (PCELG) beam generated by anisotropic Gaussian Schell-model sources is given. The analytical formulas of CSD for a PCELG beam propagating in free space and oceanic turbulence are ...
Tong Xia +5 more
semanticscholar +1 more source
2011
In two experimental operations in deep water off the west coast of British Columbia, temperature and velocity microstructure have been recorded with a spatial resolution of 2 millimeters or better, from the thermocline down to a depth of 330 meters. Some measurements have been taken along horizontal paths at discrete depths, and, by superimposing a ...
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In two experimental operations in deep water off the west coast of British Columbia, temperature and velocity microstructure have been recorded with a spatial resolution of 2 millimeters or better, from the thermocline down to a depth of 330 meters. Some measurements have been taken along horizontal paths at discrete depths, and, by superimposing a ...
openaire +1 more source