Results 11 to 20 of about 13,243 (227)

The orbital angular momentum of a turbulent atmosphere and its impact on propagating structured light fields

open access: yesNew Journal of Physics, 2021
When structured light is propagated through the atmosphere, turbulence results in modal scattering and distortions. An extensively studied example is that of light carrying orbital angular momentum (OAM), where the atmosphere is treated as a phase ...
Asher Klug, Isaac Nape, Andrew Forbes
doaj   +1 more source

Vehicle-induced turbulence and atmospheric pollution [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Theoretical models of the Earth's atmosphere adhere to an underlying concept of flow driven by radiative transfer and the nature of the surface over which the flow is taking place: heat from the sun and/or anthropogenic sources are the sole sources of ...
P. A. Makar   +6 more
doaj   +1 more source

Atmospheric Optical Turbulence Characteristics over the Ocean Relevant to Astronomy and Atmospheric Physics

open access: yesApplied Sciences, 2021
Due to the space and time constraints of turbulence measurement equipment and the experiment scene, it is difficult to obtain the atmosphere refractive index structure constant over the ocean.
Manman Xu   +5 more
doaj   +1 more source

Average Intensity of SLVGB for Slant Path Propagation in Atmospheric Turbulent

open access: yesResults in Optics, 2021
The physical meaning of propagation characteristics of an (SLVGB) Super Lorentz vortex Gauss beam in a turbulent atmosphere is studied and analyzed. To use the method of Huygens-Fresnel integral. Likewise, to apply the ITU-R turbulence structure constant
Hussein Thary Khamees
doaj   +1 more source

Surface Layer Turbulence at the Maidanak Observatory

open access: yesAtmosphere, 2023
Results of night-time surface layer turbulence measurements using ESO LuSci at the Maidanak observatory are presented. Turbulence in the surface layer was evaluated at the Maidanak observatory using LuSci during the period of 2021–2022.
Azimjon Azimov   +5 more
doaj   +1 more source

Temporal and spatial variation of refractive index structure coefficient over South China sea

open access: yesResults in Engineering, 2021
Turbulence is a scientific problem that has not been solved completely for 300 years. Turbulence is brought out by buoyancy heat bubble and wind shear, which transports matter and energy between the earth’s surface and the atmosphere.
Shiyong Shao   +5 more
doaj   +1 more source

Analysis of the Optical Turbulence Model Using Meteorological Data

open access: yesRemote Sensing, 2022
The model of atmosphere optical turbulence is important in the research field of laser atmospheric transmission, and plays a key role in astronomical site selection. In this paper, the single and overall statistical analysis between different outer scale
Manman Xu   +3 more
doaj   +1 more source

An Atmospheric Turbulence Probe

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 1980
In this paper, a complete low-cost atmospheric turbulence probe, capable of measuring temperature, differential temperature, humidity, horizontal wind speed and direction, and vertical wind component is described. Special care has been taken to minimize the probe's weight so that it may be carried easily by a balloon.
Asimakopoulos, D.N.   +3 more
openaire   +2 more sources

Blind atmospheric turbulence deconvolution [PDF]

open access: yesIET Image Processing, 2020
A new blind image deconvolution technique is developed for atmospheric turbulence deblurring to overcome limitations of ‘generic’ blind deconvolution algorithms that do not take into account the complicated physics of the turbulence. The originality of the proposed approach relies on an actual physical model, known as the Fried kernel, that quantifies ...
Charles-Alban Deledalle, Jérôme Gilles
openaire   +1 more source

Accurate Semantic Segmentation in Turbulence Media

open access: yesIEEE Access, 2019
Accurate image semantic segmentation in atmosphere turbulence conditions is challenging due to the severe degradation effects introduced by the random refractive-index fluctuations of atmosphere.
Linyan Cui, Yan Zhang
doaj   +1 more source

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