Results 181 to 190 of about 13,243 (227)
Some of the next articles are maybe not open access.
Turbulence of the upper atmosphere and isoplanatism
Applied Optics, 1979We report the results of 1,049 measurements of the vertical profile of optical turbulence as recorded by a scintillometer above a site at White Sands Missile Range. The distributional law for these measurements is shown to be approximately log normal and examples of monthly to hourly variations in profile structure are presented.
G C, Loos, C B, Hogge
openaire +2 more sources
Stratified Turbulence in the Atmospheric Mesoscales
Theoretical and Computational Fluid Dynamics, 1998zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lilly, Douglas K. +3 more
openaire +1 more source
Interactive Atmospheric Turbulence Mitigation
2016 International Conference on Digital Image Computing: Techniques and Applications (DICTA), 2016Surveillance imagery acquired at long distances is frequently degraded by atmospheric turbulence, causing it to be blurry and distorted. We introduce an interactive method for atmospheric turbulence mitigation of video sequences. Our method allows the user to input crucial information about the imaging conditions, hence bypassing many of the ...
Dmitri Kamenetsky +4 more
openaire +1 more source
In-flight investigations of atmospheric turbulence
Aerospace Science and Technology, 1998Abstract One of the key technologies in aeronautics offering substantial improvements in the fields of economy and ecology is the laminar flow technology. The sensitivity of the laminar boundary layer flow over aerodynamically smooth surfaces to the effects of disturbances like noise, vibration and insect contamination as well as the atmospheric ...
Riedel, H., Sitzmann, M.
openaire +2 more sources
On the estimation of atmospheric turbulence statistical characteristics
2009 IEEE Control Applications, (CCA) & Intelligent Control, (ISIC), 2009Recent works on adaptive optics (AO) systems have shown that the knowledge of static and dynamic characteristics of the atmospheric turbulence can be exploited to improve the performances of the AO control system. Then, motivated by the importance of an effective control for compensating the atmospheric turbulence effect and thus improving the real ...
BEGHI, ALESSANDRO +2 more
openaire +2 more sources
2008
This book, authored by a well-known researcher and expositor in meteorology, focuses on the direct link between molecular dynamics, turbulence theory, fluid mechanics and non equilibrium statistical mechanics, it is relevant to the fields of applied mathematics, physics and atmospheric sciences, and focuses on fluid flow and turbulence, as well as on ...
openaire +1 more source
This book, authored by a well-known researcher and expositor in meteorology, focuses on the direct link between molecular dynamics, turbulence theory, fluid mechanics and non equilibrium statistical mechanics, it is relevant to the fields of applied mathematics, physics and atmospheric sciences, and focuses on fluid flow and turbulence, as well as on ...
openaire +1 more source
A Spectrum of Refractive Turbulence in the Turbulent Atmosphere
Journal of Modern Optics, 1990Abstract An analytic approximation to the optical refractive-index spectrum of atmosphere turbulence is presented.
openaire +1 more source
Holography through the Atmospheric Turbulence
1972It is well known that the velocity of propagation of an e.m. wave in the vacuum is c = 3 108 m/sec.
openaire +2 more sources
Turbulence in the Atmospheric Boundary Layer
The Physics of Fluids, 1967The specific features of atmospheric boundary-layer turbulence are described. The small-scale properties of atmospheric turbulence depend very little on the peculiarities of its large-scale components and obey approximately the laws of locally isotropic turbulence. It is shown that turbulence is locally axisymmetric in respect to the vertical direction
openaire +2 more sources
Spectrum of Atmospheric Turbulence
Nature, 1951DR. E. C. S. MEGAW1 opens his valuable contribution to this subject with a challenging remark. He says, “knowledge of the average properties of turbulence in the free atmosphere is almost totally lacking”. Actually, so many meteorologists have published observations that it would be impossible here to give an adequate list of them. As long ago as 1926,
openaire +1 more source