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Beam Criterion for Atmospheric Propagation
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007A criterion is introduced for testing whether a beam retains its beam-like form after it propagates any particular distance through the turbulent atmosphere. The criterion applies to monochromatic as well as to partially coherent beams and is illustrated by examples.
Korotkova, Olga, Wolf, Emil
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Infrared Physics, 1985
Abstract The state-of-the-art of IR atmospheric propagation modelling — important to both scientific and practical applications of IR radiation—is reviewed, based mainly on experimental work performed at the FfO. The main improvements of transmission models rely on the results of measurements, analysis and modelling of aerosol and other atmospheric ...
D.H. Höhn, W. Steffens, A. Kohnle
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Abstract The state-of-the-art of IR atmospheric propagation modelling — important to both scientific and practical applications of IR radiation—is reviewed, based mainly on experimental work performed at the FfO. The main improvements of transmission models rely on the results of measurements, analysis and modelling of aerosol and other atmospheric ...
D.H. Höhn, W. Steffens, A. Kohnle
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Atmospheric Signal Propagation
2017Global navigation satellite system (GNSS ) satellites emit signals that propagate as electromagnetic waves through space to the receivers which are located on or near the Earth’s surface or on other satellites. Thereby, electromagnetic waves travel through the ionosphere and the neutral atmosphere (troposphere) which causes signals to be delayed ...
Hobiger, Thomas, Jakowski, Norbert
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Atmospheric effects on propagation
1985 Tenth International Conference on Infrared and Millimeter Waves, 1985The potential benefits to be derived from the use of radiation at frequencies near 300GHz for ranging and imaging have been apparent for many years but, in part because of nonavailability of convenient sources and detectors, until recently little quantitative research on the effects of the atmosphere upon such radiation has been conducted outside the ...
P. C. Claspy, F. L. Merat
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Atmospheric and laser propagation
Technologies for Optical Countermeasures XIV, 2017This paper reviews three phenomena that affect the propagation of electro-optical radiation through the atmosphere: absorption and scattering, refraction and turbulence. The net effect on imaging or laser systems is a net reduction of the effective range, or a degradation of the information contained in the electro-optical radiation. Recent advances in
Eijk, A.M.J. van, Stein, K.
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Propagation experiments in low-visibility atmospheres
Applied Optics, 1978An experimental program aimed at measuring critical channel parameters of atmospheric optical communication channels under low-visibility weather conditions is described. Multipath and angular spectrum measurements made under a variety of weather conditions over a 13.6-km line-of-sight propagation path are reported.
W H, Paik +4 more
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Atmospheric propagation modelling
The Journal of the Acoustical Society of America, 1997With the developments in modeling the propagation of sound through the atmosphere, it is now possible to merge these models with sensor models to determine the impact of the atmosphere on acoustic sensor performance. Early numerical models such as the Fast-Field Program (FFP) allowed users to predict the effects of refraction, geometric spreading ...
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Atmospheric Optical Propagation
2007Abstract : The Atmospheric Optical Propagation project is developing a suite of accurate models for optical propagation in the marine atmospheric boundary layer. Our objective is to provide an atmospheric effects characterization package for existing and emerging Navy applications.
Alexander M. Van Eijk +2 more
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New Experimental Data on Atmospheric Propagation
Science, 1979An experiment has been performed to measure directly the effect of atmospheric turbulence on spherical wave propagation of light on a vertical path. The results permit determination of the magnitude of the effect at a variety of locations and under different conditions.
R R, Shannon +4 more
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