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Laser Beam Atmospheric Propagation Modelling for Aerospace LIDAR Applications

open access: yesAtmosphere, 2021
Atmospheric effects have a significant impact on the performance of airborne and space laser systems. Traditional models used to predict propagation effects rely heavily on simplified assumptions of the atmospheric properties and their interactions with ...
Thomas Fahey   +3 more
doaj   +3 more sources

Turbulence-Resistant Femtosecond Filaments via Nonlinear Self-Guiding and OAM Modulation [PDF]

open access: yesSensors
As a prominent frontier in ultrafast laser–matter interaction, femtosecond laser filamentation holds great potential for atmospheric pollutant detection and remote sensing. However, its practical application in the open atmosphere is severely hampered by
Jinpei Liu   +5 more
doaj   +2 more sources

Diagnostic study of geomagnetic storm-induced ionospheric changes over very low-frequency signal propagation paths in the mid-latitude D region [PDF]

open access: yesAnnales Geophysicae, 2022
We performed a diagnostic study of geomagnetic storm-induced disturbances that are coupled to the mid-latitude D region by quantifying the propagation characteristics of very low-frequency (VLF) radio signals from transmitters located in Cumbria, UK ...
V. U. J. Nwankwo   +10 more
doaj   +1 more source

Atmospheric drag effects on modelled low Earth orbit (LEO) satellites during the July 2000 Bastille Day event in contrast to an interval of geomagnetically quiet conditions [PDF]

open access: yesAnnales Geophysicae, 2021
In this work, we simulated the atmospheric drag effect on two model SmallSats (small satellites) in low Earth orbit (LEO) with different ballistic coefficients during 1-month intervals of solar–geomagnetic quiet and perturbed conditions. The goal of this
V. U. J. Nwankwo   +10 more
doaj   +1 more source

Polarization of Radiation by the Aerosol-Gas Component of the Atmosphere for Lidar Wavelengths [PDF]

open access: yesEPJ Web of Conferences, 2020
The report presents an original algorithm for solving the radiation transfer equation based on the Monte Carlo method for problems of atmospheric laser sensing, taking into account the polarization of radiation.
Zimovaya Anna, Konoshonkin Alexander
doaj   +1 more source

Nonlinear forecasts of ƒoF2: variation of model predictive accuracy over time [PDF]

open access: yesAnnales Geophysicae, 2002
Space weather effects can strongly influence high-frequency (HF) communications by changing the ionospheric environment through which the radio waves propagate. Since many systems utilize HF communications, the ability to make real-time assessments
A. H. Y. Chan   +3 more
doaj   +1 more source

Is the Anisotropic Tilt Angle Necessary in the Turbulence Spectrum of Refractive-Index Fluctuations?

open access: yesFrontiers in Physics, 2022
With the deepening of atmospheric turbulence research, scientists have discovered that the anisotropy of turbulence cells cannot be ignored. The anisotropic non-Kolmogorov turbulence model is more in line with the actual situation of atmospheric ...
Chao Zhai
doaj   +1 more source

Wind–Temperature Regime and Wind Turbulence in a Stable Boundary Layer of the Atmosphere: Case Study

open access: yesRemote Sensing, 2020
The paper presents the results of probing the stable atmospheric boundary layer in the coastal zone of Lake Baikal with a coherent Doppler wind lidar and a microwave temperature profiler.
Viktor A. Banakh   +2 more
doaj   +1 more source

Effect of Wind Transport of Turbulent Inhomogeneities on Estimation of the Turbulence Energy Dissipation Rate from Measurements by a Conically Scanning Coherent Doppler Lidar

open access: yesRemote Sensing, 2020
A method for estimation of the turbulent energy dissipation rate from measurements by a conically scanning pulsed coherent Doppler lidar (PCDL), with allowance for the wind transport of turbulent velocity fluctuations, has been developed.
Igor N. Smalikho, Viktor A. Banakh
doaj   +1 more source

Effect of Thermal Blooming on the Higher-Order Mode Fiber Laser Array Propagation Through the Atmosphere

open access: yesFrontiers in Physics, 2022
The influence of thermal blooming on the propagation properties of higher-order mode (HOM) fiber laser array is studied by using the algorithm for simulating the laser beam propagation in the atmosphere.
Yuqiu Zhang   +5 more
doaj   +1 more source

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