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Author : Samuel Chih-Hung Wang
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (152 download)
Download or read book Optical Wave Propagation in the Turbulent Atmosphere written by Samuel Chih-Hung Wang and published by . This book was released on 1979 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fatma Kavala
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (718 download)
Download or read book Statistical Aspects of Optical Wave Propagation Through a Turbulent Atmosphere written by Fatma Kavala and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nathan Blaunstein
Publisher : CRC Press
ISBN 13 : 1351402684
Total Pages : 334 pages
Book Rating : 4.3/5 (514 download)
Download or read book Optical Waves and Laser Beams in the Irregular Atmosphere written by Nathan Blaunstein and published by CRC Press. This book was released on 2017-09-22 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Michael W. Fitzmaurice
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (317 download)
Download or read book Experimental Investigations of Optical Propagation in Atmospheric Turbulence written by Michael W. Fitzmaurice and published by . This book was released on 1971 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Edmond M. Dewan
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (91 download)
Download or read book Optical Turbulence Forecasting written by Edmond M. Dewan and published by . This book was released on 1980 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a tutorial on the effects of atmospheric turbulence upon systems which rely upon the propagation of LASER beams. In addition to providing a simplified presentation of turbulence theory and optical effects, it describes the state of the art of the new technique of radiosonde estimation of index of refraction fluctuations. Suggestions are given for future research which will help to answer current Air Force needs. The feasibility of some laser systems will depend upon the value of r0, the coherence length (which is related to “C2n” which in turn is related to the degree of turbulence). At present, the statistics of “r0” are inadequate.
Author : Jason Daniel Schmidt
Publisher : Society of Photo Optical
ISBN 13 : 9780819483263
Total Pages : 196 pages
Book Rating : 4.4/5 (832 download)
Download or read book Numerical Simulation of Optical Wave Propagation with Examples in MATLAB written by Jason Daniel Schmidt and published by Society of Photo Optical. This book was released on 2010 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Simulation of Optical Wave Propagation is solely dedicated to wave-optics simulations. The book discusses digital Fourier transforms (FT), FT-based operations, multiple methods of wave-optics simulations, sampling requirements, and simulations in atmospheric turbulence.
Author : Valerʹi︠a︡n Ilʹich Tatarskiĭ
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.0/5 ( download)
Download or read book The Effects of the Turbulent Atmosphere on Wave Propagation written by Valerʹi︠a︡n Ilʹich Tatarskiĭ and published by . This book was released on 1971 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ronald Louis Fante
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (91 download)
Download or read book Frequency Spectrum of Optical Waves Propagating in a Moving Turbulent Atmosphere written by Ronald Louis Fante and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have calculated the frequency spectrum of plane waves and beams propagating in a moving turbulent atmosphere. Both the case when the atmosphere moves with a constant wind and the case when the wind velocity is distributed according to a gaussian centered about some average velocity is considered. The results indicate that for small propagation distances, the frequency spectrum behaves as omega sup -8/3 for large frequency, omega; for large propagation distances, the spectrum is broadened with increasing distance-with the broadening dependent upon the beam parameters and the wind velocity. (Author).
Author : Vladimir Petrovich Lukin
Publisher : SPIE Press
ISBN 13 : 9780819443373
Total Pages : 222 pages
Book Rating : 4.4/5 (433 download)
Download or read book Adaptive Beaming and Imaging in the Turbulent Atmosphere written by Vladimir Petrovich Lukin and published by SPIE Press. This book was released on 2002 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the wide application of adaptive optical systems, an understanding of optical wave propagation in randomly inhomogeneous media has become essential, and several numerical models of individual AOS components and of efficient correction algorithms have been developed. This monograph contains detailed descriptions of the mathematical experiments that were designed and carried out during more than a decade's worth of research.
Author : Ronald Louis Fante
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.3/5 (91 download)
Download or read book Optical Beam Propagation in Turbulent Media written by Ronald Louis Fante and published by . This book was released on 1975 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent developments on the propagation of microwave and optical beams in turbulent media, such as the clear atmosphere are discussed. Among the phenomena considered are beam spreading, beam wander, loss of coherence, scintillations, angle-of-arrival variations, and short pulse effects. Also included is a discussion of methods of compensation of the effect of turbulence on communications and imaging systems.
Author : Vladimir Petrovich Lukin
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.3/5 (91 download)
Download or read book Wave Propagation in the Atmosphere and Adaptive Optics written by Vladimir Petrovich Lukin and published by SPIE-International Society for Optical Engineering. This book was released on 2000 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. F. Lutomirski
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (227 download)
Download or read book On the Mutual Coherence Function of an Optical Wave in a Turbulent Atmosphere written by R. F. Lutomirski and published by . This book was released on 1970 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of an overall study of phenomena that affect the performance of optical or infrared reconnaissance and guidance equipment, the present work shows that the most commonly used expression for the mutual coherence function for an optical wave propagating in a turbulent atmosphere is, in general, incorrect. This expression is based on an unphysical extrapolation of the Kolomogorov spectrum. In modifying the spectrum, however, the corrections to the coherence function, the implied resolution, spreading of a finite beam, and the signal-to-noise ratio using heterodyne detection, can be considerable. Approximate expressions for the coherence function, valid over three distinct propagation distance regimes, are derived. The field is shown to have a greater transverse coherence length than that predicted by other researchers, the difference being more pronounced at shorter ranges. Thus, under many conditions, the performance degradation of devices that depend on the above properties is less than previously reported. (Author).
Author : Valerian Ilich Tatarski
Publisher : Courier Dover Publications
ISBN 13 : 0486810291
Total Pages : 305 pages
Book Rating : 4.4/5 (868 download)
Download or read book Wave Propagation in a Turbulent Medium written by Valerian Ilich Tatarski and published by Courier Dover Publications. This book was released on 2016-12-14 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes the phenomena associated with the propagation of electromagnetic and acoustic waves through atmospheric turbulence. Geared toward specialists in radiophysics and atmospheric acoustics and optics, the treatment is also suitable for advanced undergraduates and graduate students. The author stresses applications to phase and amplitude fluctuations, scintillation of stars, radio scattering, and other problems. Part I covers topics from the theory of random fields and turbulence theory, including statistical description. Part II, on the scattering of waves in the turbulent atmosphere, is supplemented by an appendix on scattering of acoustic radiation. Part III offers a detailed presentation of line-of-sight propagation of acoustic and electromagnetic waves through a turbulent medium. Part IV concludes the text with a comparison of theory with experimental data
Author : R. F. Lutomirski
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (731 download)
Download or read book On the Phase Structure and Mutual Coherence Function of an Optical Wave in a Turbulent Atmosphere written by R. F. Lutomirski and published by . This book was released on 1971 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work shows that the most commonly used expression for the mutual coherence function (MCF) for an optical wave propagating in a turbulent atmosphere is, in general, incorrect. This expression is based on an unphysical extrapolation of the Kolmogorov spectrum. Along an atmospheric path, with specified turbulence parameters, the new MCF is shown to imply greater resolution, less beam spreading, and greater heterodyne signal-to-noise ratios than indicated by previous calculations. By comparing these results with those previously obtained for heterodyne detection, the percentage errors in the previous calculations are shown to increase with decreasing propagation paths. In particular, where it was formerly thought that the atmosphere limited the effective coherent detection size in heterodyne detection at all ranges, the present calculation reveals that over sufficiently short paths, there is no size limit imposed by the atmosphere. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (23 download)
Download or read book Aperture-averaging Factor for Optical Propagation Through the Turbulent Atmosphere written by and published by . This book was released on 1990 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Larry C. Andrews
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 820 pages
Book Rating : 4.3/5 (91 download)
Download or read book Laser Beam Propagation Through Random Media written by Larry C. Andrews and published by SPIE-International Society for Optical Engineering. This book was released on 2005 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since publication of the first edition of this text in 1998, there have been several new, important developments in the theory of beam wave propagation through a random medium, which have been incorporated into this second edition. Also new to this edition are models for the scintillation index under moderate-to-strong irradiance fluctuations; models for aperture averaging based on ABCD ray matrices; beam wander and its effects on scintillation; theory of partial coherence of the source; models of rough targets for ladar applications; phase fluctuations; analysis of other beam shapes; plus expanded analysis of free-space optical communication systems and imaging systems.
Author : International Conference on Optical and Millimeter Wave Propagation and Scattering in the Atmosphere 1986, Firenze
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.0/5 ( download)
Download or read book International Conference on Optical and Millimeter Wave Propagation and Scattering in the Atmosphere, Florence, Italy, May 27-30, 1986 written by International Conference on Optical and Millimeter Wave Propagation and Scattering in the Atmosphere 1986, Firenze and published by . This book was released on 1986 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
