Wavelength Dependence of Laser Beam Scintillation
Author: M. W. Fitzmaurice
Publisher:
Published: 1969
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKLaser beam scintillation and log-amplitude variance evaluation for wavelengths on digital computer.
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Wavelength Dependence of Laser Beam Scintillation
Author: M. W. Fitzmaurice
Publisher:
Published: 1969
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKLaser Beam Scintillation with Applications
Author: Larry C. Andrews
Publisher: SPIE Press
Published: 2001
Total Pages: 408
ISBN-13: 9780819441034
DOWNLOAD EBOOKRenewed interest in laser communication systems has sparked development of useful new analytic models. This book discusses optical scintillation and its impact on system performance in free-space optical communication and laser radar applications, with a detailed look at propagation phenomena and the role of scintillation on system behavior. Intended for practicing engineers, scientists, and students.
Measurements of 0.63mm Laser-beam Scintillation in Strong Atmospheric Turbulence
Author: G. R. Ochs
Publisher:
Published: 1969
Total Pages: 17
ISBN-13:
DOWNLOAD EBOOKMeasurements of 0.63mm Laser-beam Scintillation in Strong Atmospheric Turbulence
Author: G. R. Ochs
Publisher:
Published: 1969
Total Pages: 28
ISBN-13:
DOWNLOAD EBOOKLog-amplitude variance and covariance of the scintillation of a diverging optical beam have been measured over a 48-hr period at a wavelength of 0.63[mu], on a 490 and 1000 m optical paths 2 m above the surface of a flat mesa near Boulder, Colorado. Simultaneous measurements of the refractive-index structure of the atmosphere have been obtained from temperature-structure-function measurements at spacings of 1, 3, and 10 cm. A saturation of scintillation occurs for values of log-amplitude variance between 0.5 and 1. After reaching a peak, the log-amplitude variance then decreases with both increasing range and increasing refractive-index turbulence. The spatial covariance of the fluctuations tends to increase in the saturation region. In the unsaturated region, the log-amplitude variance is approximately that predicted by the spherical-wave propagation theory of Tatarski.
Laser Beam Scintillation with Applications
Author: Cynthia Y. Young
Publisher:
Published: 2001-07-30
Total Pages: 416
ISBN-13: 9781510604896
DOWNLOAD EBOOKRenewed interest in laser communication systems has sparked development of useful new analytic models. This book discusses optical scintillation and its impact on system performance in free-space optical communication and laser radar applications, with a detailed look at propagation phenomena and the role of scintillation on system behavior. Intended for practicing engineers, scientists, and students.
Spectral Density of Laser Beam Scintillation in Wind Turbulence. Part 1; Theory
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-07-11
Total Pages: 34
ISBN-13: 9781722794323
DOWNLOAD EBOOKThe temporal spectral density of the log-amplitude scintillation of a laser beam wave due to a spatially dependent vector-valued crosswind (deterministic as well as random) is evaluated. The path weighting functions for normalized spectral moments are derived, and offer a potential new technique for estimating the wind velocity profile. The Tatarskii-Klyatskin stochastic propagation equation for the Markov turbulence model is used with the solution approximated by the Rytov method. The Taylor 'frozen-in' hypothesis is assumed for the dependence of the refractive index on the wind velocity, and the Kolmogorov spectral density is used for the refractive index field. Balakrishnan, A. V. Ames Research Center NCC2-374...
Electromagnetic Scintillation: Volume 2, Weak Scattering
Author: Albert D. Wheelon
Publisher: Cambridge University Press
Published: 2003-07-31
Total Pages: 462
ISBN-13: 113943960X
DOWNLOAD EBOOKThe first volume of this set of books on electromagnetic scintillation dealt with phase and angle-of-arrival measurement errors, which are accurately described by geometrical optics. This second volume concentrates on amplitude and intensity fluctuations of the received signal.
Scientific and Technical Aerospace Reports
Author:
Publisher:
Published: 1994
Total Pages: 652
ISBN-13:
DOWNLOAD EBOOKLists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
