Experimental Study of Laser Propagation Through the Atmospheric Turbulence PDF Download
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Author: Kirk Alan Lohnes
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 198
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Author: Kirk Alan Lohnes
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 198
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Author: Michael W. Fitzmaurice
Publisher:
ISBN:
Category : Atmospheric chemistry
Languages : en
Pages : 196
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Book Description
The pertinent theoretical background and the results of a group of experiments conducted over 0.4- and 1.17-km near-ground horizontal ranges are presented. (1) The log-amplitude variances for HeNe (0.633 μm) and CO2 (10.6 μm) laser beams were found to have a ratio of 26.8, which is in close agreement with the predictions of Rytov-based spherical-wave theory. (2) Published measurements of the saturation level of the log-amplitude variance are reviewed and several inconsistencies noted. (3) The spatial correlation function of irradiance field was measured and found to agree with theory. The degree of correlation between different frequency beams which had traversed the same optical path was also measured and compared to theory. The data exhibited an unacceptably large scatter and did not show the wavelength dependence. (4) The log-normal, Rayleigh, and Rice probability distributions are discussed in terms of their applicability to irradiance statistics. Relatively weak 10.6 μm irradiance fluctuations were found to be equally well described by the log-normal and Rice distributions; strong fluctuations obtained at 0.488 μm were clearly best described by the log-normal distribution.
Author: J. W. Strohbehn
Publisher: Springer
ISBN: 9783662311615
Category : Technology & Engineering
Languages : en
Pages : 328
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With contributions by numerous experts
Author: Hugo Weichel
Publisher: SPIE Press
ISBN: 9780819404879
Category : Science
Languages : en
Pages : 114
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Author: Nathan Blaunstein
Publisher: CRC Press
ISBN: 1351402684
Category : Computers
Languages : en
Pages : 334
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Book Description
The book introduces optical wave propagation in the irregular turbulent atmosphere and the relations to laser beam and LIDAR applications for both optical communication and imaging. It examines atmosphere fundamentals, structure, and content. It explains specific situations occurring in the irregular atmosphere and for specific natural phenomena that affect optical ray and laser beam propagation. It emphasizes how to use LIDAR to investigate atmospheric phenomena and predict primary parameters of the irregular turbulent atmosphere and suggests what kinds of optical devices to operate in different atmospheric situations to minimize the deleterious effects of natural atmospheric phenomena.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1388
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1408
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Author: D. H. Sliney
Publisher: Springer Science & Business Media
ISBN: 1489935967
Category : Medical
Languages : en
Pages : 1042
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Book Description
Nearly a decade aga a general review article on the evaluation of optical radia tion hazards was published in Applied Optics (Sliney and Freasier, 1973). This arti cle received many favorable comments but also prompted many inquiries regarding specific optical hazard problems. From this it became evident that a monograph rather than a supplemental and expanded article was needed to fill this literature gap relating to laser and optical radiation hazards. The present work is designed to fill that gap, and is structured to permit either classroom or self-study use. Much of the material in this book was developed in eonnection with short courses on laser safety and radiometry in which we have participated, as weIl as from our previous articles. In particular, the sequenee of chapters is based upon the experiences which we have had in lecturing in courses with different schedules. One of the great difficulties in developing a text of this nature is that a broad, multidisciplinary background must be included in order that the reader can comprehend all of the subjeet matter readily. For this reason, the material presented on anatomy and physiology is orien ted toward the engineer or physical scientist, while the review material on basic optical physics is intended more for the physician or life scientist.
Author: J. W. Strohbehn
Publisher:
ISBN: 9780387088129
Category : Atmosphere
Languages : en
Pages : 325
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Book Description
