Results 11 to 20 of about 790,815 (305)
Stabilizing and deblurring atmospheric turbulence [PDF]
2011 IEEE International Conference on Computational Photography (ICCP), 2011 A new approach is proposed to correct geometric distortion and reduce space and time-variant blur in videos that suffer from atmospheric turbulence. We first register the frames to suppress geometric deformation using a B-spline based non-rigid registration method.
ZHU XIANG, MILANFAR PEYMAN
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An Efficient Recognition Method for Orbital Angular Momentum via Adaptive Deep ELM
Sensors, 2023 For orbital angular momentum (OAM) recognition in atmosphere turbulence, how to design a self-adapted model is a challenging problem. To address this issue, an efficient deep learning framework that uses a derived extreme learning machine (ELM) has been ...
Haiyang Yu +3 more
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New 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
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Vehicle-induced turbulence and atmospheric pollution [PDF]
Atmospheric 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
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Applied 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
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Average Intensity of SLVGB for Slant Path Propagation in Atmospheric Turbulent
Results 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
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Experimental investigation of the performance of different modulation techniques under controlled FSO turbulence channel [PDF]
, 2010 This paper experimentally investigates and compares the performance of the free space optics system employing three different modulation schemes, on-off keying (OOK) with nonreturn- to-zero (NRZ) and return-to-zero (RZ) and the binary phase shift keying (
Z. Ghassemlooy +12 more
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Modelling and simulation of turbulence in unsteady separated and suddenly-expanded flows [PDF]
, 2011 The scope of this PhD thesis is the simulation of turbulence in time-dependent, separated and suddenly-expanded channel flows. High-resolution and very high-order numerical methods have been employed in the framework of Implicit Large Eddy Simulation ...
Karantonis, Konstantinos
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Temporal and spatial variation of refractive index structure coefficient over South China sea
Results 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
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Effect of Prandtl's ration on balance in geophysical turbulence [PDF]
, 2015 Support for this research has come from the UK Engineering and Physical Sciences Research Council (grant no. EP/H001794/1).The fluid dynamics of the atmosphere and oceans are to a large extent controlled by the slow evolution of a scalar field called ...
McKiver, William Joseph +1 more
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