Results 1 to 10 of about 2,111 (266)

Passive Continuous Variable Quantum Key Distribution through the Oceanic Turbulence [PDF]

open access: yesEntropy, 2023
Continuous variable quantum key distribution (CVQKD) can be potentially implemented through seawater channels, whereas the involved oceanic turbulence has a negative effect on the maximal transmission distance of quantum communication systems.
Yiwu Zhu, Lei Mao, Hui Hu, Yijun Wang
doaj   +2 more sources

Beam intensity and spectral coherence of Hermite-cosine-Gaussian rectangular multi-Gaussian correlated Schell-model beam in oceanic turbulence [PDF]

open access: yesHeliyon, 2023
The beam spreading and evolution behavior of a partially coherent, Hermite-cosine-Gaussian (HcosG) rectangular multi-Gaussian correlated Schell-model beam propagating in oceanic turbulence is studied. Analytical expressions for the cross-spectral density
Xu Wu, Chuang Wang, Yuhui Kong, Kenan Wu
doaj   +2 more sources

A new reference-quality precipitation gauge wind shield [PDF]

open access: yesAtmospheric Measurement Techniques, 2023
Gauge-based precipitation measurements suffer from undercatch due to the effects of wind, with solid-precipitation measurements especially susceptible to such errors.
J. Kochendorfer   +5 more
doaj   +1 more source

Log-Skew-Normality of Ocean Turbulence [PDF]

open access: yesPhysical Review Letters, 2021
The statistics of intermittent ocean turbulence is the key link between physical understanding of turbulence and its global implications. The log-normal distribution is the standard but imperfect assumed distribution for the turbulent kinetic energy dissipation rate.
Cael, B. B., Mashayek, Ali
openaire   +5 more sources

Bi-Photon Entangled Airy Beams through Unstable Oceanic Turbulence

open access: yesJournal of Marine Science and Engineering, 2022
Orbital angular momentum (OAM) carried by bi-photon entangled Airy beams in unstable oceanic turbulence is theoretically investigated. The analytical expression of the spatial coherence radius of a spherical wave in the unstable stratification oceanic ...
Donghui Yang   +4 more
doaj   +1 more source

The quantification and correction of wind-induced precipitation measurement errors [PDF]

open access: yesHydrology and Earth System Sciences, 2017
Hydrologic measurements are important for both the short- and long-term management of water resources. Of the terms in the hydrologic budget, precipitation is typically the most important input; however, measurements of precipitation are subject to large
J. Kochendorfer   +10 more
doaj   +1 more source

Scintillation Index for Spherical Wave Propagation in Anisotropic Weak Oceanic Turbulence with Aperture Averaging under the Effect of Inner Scale and Outer Scale

open access: yesPhotonics, 2022
Due to the advantages of high transmission rate, lower power consumption, high security, etc., underwater wireless optical communication (UWOC) has been widely studied and considered as a potential technique for underwater communication.
Zhiru Lin   +3 more
doaj   +1 more source

Research on Hypergeometric-Gaussian Vortex Beam Propagating under Oceanic Turbulence by Theoretical Derivation and Numerical Simulation

open access: yesJournal of Marine Science and Engineering, 2021
In this paper, we use two methods to research the propagation characteristics of a Hypergeometric-Gaussian (HyGG) vortex beam under oceanic turbulence. One is numerical calculation based on the Rytov approximation theory, where the theoretical detection ...
Xinguang Wang, Le Wang, Shengmei Zhao
doaj   +1 more source

Radially Phased-Locked Hermite–Gaussian Correlated Beam Array and Its Properties in Oceanic Turbulence

open access: yesPhotonics, 2023
The descriptions of a radially phased-locked Hermite–Gaussian correlated beam array are introduced, the equation of this beam array in oceanic turbulence is derived, and the intensity profiles of this beam array are shown and analyzed.
Peiying Zhu   +5 more
doaj   +1 more source

Lommel-Gaussian Pulsed Beams Carrying Orbital Angular Momentum Propagation in Asymmetric Oceanic Turbulence

open access: yesIEEE Photonics Journal, 2020
By developing the complex phase perturbation for vortex pulsed beams in asymmetric oceanic turbulence and the spatiotemporal orthogonal basis for Lommel-Gaussian pulsed beam, we establish the received probability model of orbital angular momentum (OAM ...
Ye Li, Yixin Zhang, Yun Zhu
doaj   +1 more source

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