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Direct observation of atmospheric turbulence with a video-rate wide-field wavefront sensor
Turbulence is a complex and chaotic state of fluid motion. Atmospheric turbulence within the Earth’s atmosphere poses fundamental challenges for...
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Effect of a Model Fire on Atmospheric Turbulence Characteristics
Abstract —This paper presents the analysis and generalization of the results of studies of turbulence in flame and in the vicinity of a combustion...
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Statistical law of laser echo disturbance characteristics under atmospheric turbulence
Atmospheric turbulence significantly affects laser transmission and echo. The size of the echo cross section and the distribution of energy are...
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Spectral changes of radial array beams in inhomogeneous atmospheric turbulence
Based on the generalized Huygens-Fresnel principle, an analytical expression for the spectral intensity of the radial array Gaussian Schell mode beam...
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Development And Execution Of An FSO Communication System To Track The Scattered Laser Beam During Atmospheric Turbulence
Modern free-space optical communication systems primarily use intensity modulation with direct detection. The effectiveness of free-space optical...
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Performance estimation of SISO and MIMO Ro-FSO link under atmospheric turbulence
The present study focuses on analysing the bit error rate (BER) of single-input single-output and multiple-input multiple-output Radio-over free...
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Estimation of the Atmospheric Turbulence Parameters Using the Angle-of-Arrival Covariance Function
AbstractThe Fried’s length r 0 , the outer scale L 0 , the isoplanatism θ 0 , the coherence time τ 0 , and the profile of the optical turbulence energy
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Beam Propagation Factor of a Partially Coherent Twisted Elliptical Vortex Beam in Inhomogeneous Atmospheric Turbulence
Based on the extended Huygens–Fresnel principle and the second-order moments of the Wigner distribution function (WDF), we derive the analytical...
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Performance evaluation of UAV-assisted FSO link in generalized Malaga distributed atmospheric turbulence conditions
An unmanned aerial vehicle (UAV)-assisted free-space optical communication (FSO) system has recently played a significant role in increasing optical...
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Design and Construction of an Operational Prototype of Optical Atmospheric Turbulence Parameters Measurement Device Based on Moiré Deflectometry
AbstractLaboratory equipment based on the Moiré deflectometry method have been recently introduced for atmospheric turbulence measurements. One of...
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Comparative Study of Two Definitions of the Turbulent Distance for Laser Beams Propagating Through Non-Kolmogorov Atmospheric Turbulence
Using two definitions of the turbulent distance to characterize the laser beam propagation through atmospheric turbulence, we derive a general...
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Enhancing performance in hybrid FSO/RF communication systems under atmospheric turbulence and pointing errors
The continuous progress in hybrid free space optical/radio frequency (FSO/RF) communication systems has led to their significant potential in...
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A comprehensive investigation on the propagation properties of a generalized Hermite cosh-Gaussian beam through atmospheric turbulence
The impact of atmospheric turbulence on the properties of a generalized Hermite cosh-Gaussian beam (GHCGB) is investigated. The formula for the...
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Intermittency of Kolmogorov and Coherent Turbulence in the Mountain Atmospheric Boundary Layer (Review)
Abstract —The review is devoted to the intermittency of atmospheric turbulence of different types (Kolmogorov and coherent) in the mountain boundary...
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Effects of moderate to weak atmospheric turbulence on the propagation properties of the Whittaker–Gaussian laser beam
The propagation properties of the Whittaker–Gaussian (WG) beam propagating in turbulent atmosphere are investigated in detail based on the extended...
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Kurtosis Parameter and Coupling Coefficient of Partially-Coherent Twisted Gaussian Beam Propagating Through Non-Kolmogorov Atmospheric Turbulence
We derive analytical expressions of the kurtosis ( K ) parameter and the coupling ( C ) coefficient of the partially-coherent twisted Gaussian (PCTG)...
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The effects of atmospheric turbulence on the spectral changes of diffracted pulsed hollow higher-order cosh-Gaussian beam
In this paper, we derive by using the Fourier transform and the extended Huygens-Fresnel, the analytical formulae for a truncated and non-truncated...
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Comparative Measurements of Atmospheric Turbulence Parameters by Optical Methods
Abstract —Different methods for measuring random wavefront tilts are considered. Possibilities of measuring the Fried parameter by the differential...
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Performance enhancement of atmospheric turbulence channels in DWDM-FSO PON communication systems using M-ary hybrid DPPM-M-PAPM modulation schemes under pointing errors, ASE noise and interchannel crosstalk
This paper focuses on improving the efficiency of free-space optical (FSO) communication by employing a combination of hybrid on–off keying (OOK)...
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Investigations on modified OOK and adaptive threshold for wavelength division multiplexing free-space optical systems impaired by interchannel crosstalk, atmospheric turbulence, and ASE noise
This paper presents the design and analysis of a dense wavelength division multiplexing free-space optical communication (DWDM-FSO) optical fiber...
