Results 11 to 20 of about 1,338,792 (250)

Uncertainty Quantification for Infrasound Propagation in the Atmospheric Environment

Applied Sciences, 2022
The propagation of infrasound in the atmosphere is influenced by atmospheric environmental parameters, which affect the precise localization of the infrasound source. Therefore, it has become crucial to quantify the influence of atmospheric environmental
Liang Yu, Xiaoquan Yi, Ran Wang, Chenyu Zhang, Tongdong Wang, Xiaopeng Zhang   +5 more
doaj   +1 more source

Statistical Analysis of Hybrid Atmospheric Ducts over the Northern South China Sea and Their Influence on Over-the-Horizon Electromagnetic Wave Propagation

Journal of Marine Science and Engineering, 2023
Atmospheric ducts are special super-refractive atmospheric structures that can cause over-the-horizon propagation of electromagnetic waves. Different types of atmospheric ducts have different influences on electromagnetic wave propagation.
Yang Shi, Shuwen Wang, Fan Yang, Kunde Yang   +3 more
doaj   +1 more source

Propagation Properties of an Astigmatic Cos-Gaussian Beam through Turbulent Atmosphere [PDF]

E3S Web of Conferences, 2021
We use the extended Huygens-Fresnel integral to investigate the propagation properties of a cos-Gaussian beam (cosGB) with astigmatism in atmospheric turbulence.
Zhu Kaicheng, Ma Xiaolei, Gao Chang, Ren Dengjuan, Zhu Jie   +4 more
doaj   +1 more source

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

Atmosphere, 2021
The Earth’s atmosphere is the living environment in which we live and cannot escape. Atmospheric turbulence is a typical random inhomogeneous medium, which causes random fluctuations of both the amplitude and phase of optical wave propagating through it.
Fazhi Wang, Wenhe Du, Qi Yuan, Daosen Liu, Shuang Feng   +4 more
doaj   +1 more source

Communication Systems Performance at mm and THz as a Function of a Rain Rate Probability Density Function Model

Sensors, 2022
6G is already being planned and will employ much higher frequencies, leading to a revolutionary era in communication between people as well as things. It is well known that weather, especially rain, can cause increased attenuation of signal transmission ...
Judy Kupferman, Shlomi Arnon
doaj   +1 more source

A revised approach to the ƒoF2 long-term trends analysis [PDF]

Annales Geophysicae, 2002
A new approach to extract foF2 long-term trends, which are free to a great extent from solar and geomagnetic activity effects, has been proposed. These trends are insensitive to the phase (increasing/decreasing) of geomagnetic activity, with long ...
A. V. Mikhailov, A. V. Mikhailov, D. Marin, T. Yu. Leschinskaya, M. Herraiz   +4 more
doaj   +1 more source

Corrections to “Propagation Properties of Gaussian Schell-Model Beam Array in the Jet Engine Exhaust Induced Turbulence” [Dec 20 Art no. 6501113]

IEEE Photonics Journal, 2022
We correct a few typographical errors in the original manuscript.
Yuqiu Zhang, Tianyue Hou, Qi Chang, Hongxiang Chang, Jinhu Long, Pengfei Ma, Pu Zhou   +6 more
doaj   +1 more source

Anisotropic Non-Kolmogorov Turbulence Spectrum with Anisotropic Tilt Angle

Photonics, 2021
With the in-depth study of atmospheric turbulence, scholars have identified that the anisotropy of turbulence cells should not be forgotten. The anisotropic non-Kolmogorov turbulence model can better characterize the actual situation of atmospheric ...
Chao Zhai
doaj   +1 more source

Propagation of uncertainty from observing systems and NWP into hydrological models : COST-731 Working Group 2 [PDF]

, 2010
The COST-731 action is focused on uncertainty propagation in hydrometeorological forecasting chains. Goals and activities of the action Working Group 2 are presented.
Roulin, Emmanuel, Rossa, Andrea, Kok, Kees, Orfila, Bartlome, Nurmi, Pertti, Szturc, Jan, Orfila, Bartolomé, Cofiño González, Antonio Santiago, Beven, Keith J.,, Vehvilainen, Bertel, Seed, Alan, Zappa, Massimiliano, Beven, K. J., Cofino, Antonio S., Schröter, Kai, Martin, Eric, Bruen, Michael, Beven, Keith J., Germann, Urs, Schroeter, Kai   +19 more
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Turbulence characterization and image processing data sets from a NATO RTO SET 165 trial in Dayton, Ohio, USA

, 2022
Art. 83800JThe performance of optical systems is degraded by atmospheric turbulence. Over propagation distances that exceed several kilometers, it is difficult to evaluate its impact because of terrain variability - a factor that should be taken into ...
Nicolas, S., Velluet, M.-T., Vorontsov, M., Marchi, G., Schwering, P., Riker, J.   +5 more
core   +1 more source