Results 21 to 30 of about 31,732 (215)

Probability density function of fiber-coupling efficiency and temporal power spectrum of irradiance fluctuations in the anisotropic non-Kolmogorov satellite-to-ground downlink

open access: yesResults in Physics, 2021
As many related experimental and theoretical results are identified, scholars have found that the anisotropy of turbulence cells is indispensable in the atmospheric turbulence.
Chao Zhai
doaj   +1 more source

Scintillation index of optical plane wave propagating through non Kolmogorov moderate-strong turbulence [PDF]

open access: yes, 2007
An optical plane wave propagating through atmospheric turbulence is affected by irradiance fluctuations known as scintillation. The scintillation index of an optical wave in strong turbulence can be analyzed by extended Rytov theory, which uses filter ...
Ferrero, Valter   +3 more
core   +1 more source

Fiber-coupling efficiency of a Gaussian-beam in anisotropic non-Kolmogorov turbulence in the presence of random angular jitter

open access: yesResults in Physics, 2020
Increasing experimental evidence and theoretical results verify that the non-Kolmogorov property and anisotropy are both exhibited in the atmospheric turbulence.
Chao Zhai
doaj   +1 more source

Average transmittance in non-Kolmogorov turbulence

open access: yesOptics Communications, 2013
Abstract Average transmittance in non-Kolmogorov turbulence is evaluated. Our recently published equivalent structure constant formulation is employed in our numerical evaluations. At the fixed propagation distance and wavelength, and at the corresponding equivalent structure constant, as the power law exponent of the non-Kolmogorov spectrum ...
Ata, Yalcin   +2 more
openaire   +2 more sources

Generalized wavefront phase for non-Kolmogorov turbulence

open access: yesOptics Letters, 2008
We introduce the Lévy fractional Brownian field family to model the turbulent wavefront phase. This generalized model allows us to overcome the limitations found in a previous approach [Perez et al., J. Opt. Soc. Am. A 21, 1962 (2004)]. More precisely, our new model provides stationary phase increments over the full inertial range. Thus it successfully
Perez, Dario G., Zunino, Luciano
openaire   +4 more sources

Invariant forms and control dimensional parameters in complexity quantification

open access: yesFrontiers in Applied Mathematics and Statistics, 2023
Non-equilibrium dynamics is omnipresent in nature and technology and can exhibit symmetries and order. In idealistic systems this universality is well-captured by traditional models of dynamical systems. Realistic processes are often more complex.
Snezhana I. Abarzhi
doaj   +1 more source

Galactic Magnetic Turbulence from Radio data [PDF]

open access: yes, 2011
Fluctuations in the Galactic synchrotron emission can be traced by the angular power spectrum of radio maps at low multipoles. At frequencies below few GHz, large-scale anisotropies are mainly induced by magnetic field turbulence.
Armstrong   +45 more
core   +2 more sources

Synthetic turbulence prediction in non-Kolmogorov turbulence

open access: yesJournal of Physics: Conference Series, 2011
We use Kinematic Simulation to assess the role of sweeping in the theory of Richardson for particle pair dispersion. We use different spectral laws to show the particular case of Kolmogorov spectrum. KS shows good consistency with Richardson's locality assumption for a large range of spectral laws (1.15 ≤ p ≤ 1.96).
F C G A Nicolleau   +2 more
openaire   +1 more source

Oceanic non-Kolmogorov optical turbulence and spherical wave propagation

open access: yesOptics Express, 2021
Light propagation in turbulent media is conventionally studied with the help of the spatio-temporal power spectra of the refractive index fluctuations. In particular, for natural water turbulence several models for the spatial power spectra have been developed based on the classic, Kolmogorov postulates.
Jin-Ren Yao   +6 more
openaire   +3 more sources

Effect of Wavefront Distortion in Non-Kolmogorov Turbulence on the Performance of Multi-Beam Transmission Coherent Detection

open access: yesPhotonics, 2023
This study aims to address the multi-beam transmission problem of optical wireless coherent communication systems under the influence of non-Kolmogorov turbulence.
Chenghu Ke, Tian Xing, Xizheng Ke
doaj   +1 more source

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