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Atmospheric Turbulence Scintillation Effects On Wavefront Tilt Estimation
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Book Synopsis Atmospheric Turbulence Scintillation Effects on Wavefront Tilt Estimation by : James Allan Louthain
Download or read book Atmospheric Turbulence Scintillation Effects on Wavefront Tilt Estimation written by James Allan Louthain and published by . This book was released on 1997-12-01 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new atmospheric turbulence screen generator is developed for use in performance calculations of adaptive optics systems valid over a wide range of atmospheric turbulence parameters. The screen generator accounts for diffraction effects caused by weak turbulence and incorporates the phase, amplitude, and cross statistics of the perturbed optical field. The wavefront's phase and amplitude perturbations are taken from the correlation functions developed by Lee and Harp and the cross correlation of the phase and amplitude derived in this thesis. The screen generator uses a modal representation to perform a Fourier series expansion of the wavefront phase and amplitude over a square area. The phase, amplitude, and cross power spectral densities determined from the correlation functions are used in the Fourier series expansion. The mean square value and the structure functions of the phase, amplitude, and cross terms are calculated to within 1% of the theoretical values in a Monte Carlo experiment using the screen generator. Monte Carlo experiments performed using the screen generator showed the amplitude perturbations can significantly reduce the accuracy of full-aperture tilt estimation using image centroid motion. However, since the amplitude perturbations affect the image centroid, the tilt estimate using the combined amplitude and phase screen allows for a higher Strehl ratio than using only the phase to estimate the correction.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applied Aspects of Optical Communication and LIDAR by : Nathan Blaunstein
Download or read book Applied Aspects of Optical Communication and LIDAR written by Nathan Blaunstein and published by CRC Press. This book was released on 2009-12-28 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploring the practical aspects of atmospheric optical communication and light detection and ranging (LIDAR), Applied Aspects of Optical Communication and LIDAR details the role of atmospheric structures in propagation phenomena that influence the transmission of optical signals through perturbed atmospheric communication channels. It examines nume
Book Synopsis Optics in Atmospheric Propagation and Adaptive Systems by :
Download or read book Optics in Atmospheric Propagation and Adaptive Systems written by and published by . This book was released on 2002 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Astronomical Optics by : Daniel J. Schroeder
Download or read book Astronomical Optics written by Daniel J. Schroeder and published by Elsevier. This book was released on 2012-12-02 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a recognized expert in the field, this clearly presented, well-illustrated book provides both advanced level students and professionals with an authoritative, thorough presentation of the characteristics, including advantages and limitations, of telescopes and spectrographic instruments used by astronomers of today. - Written by a recognized expert in the field - Provides both advanced level students and professionals with an authoritative, thorough presentation of the characteristics, including advantages and limitations, of telescopes and spectrographic instruments used by astronomers of today
Book Synopsis Springer Handbook of Optical Networks by : Biswanath Mukherjee
Download or read book Springer Handbook of Optical Networks written by Biswanath Mukherjee and published by Springer Nature. This book was released on 2020-10-15 with total page 1169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is an authoritative, comprehensive reference on optical networks, the backbone of today’s communication and information society. The book reviews the many underlying technologies that enable the global optical communications infrastructure, but also explains current research trends targeted towards continued capacity scaling and enhanced networking flexibility in support of an unabated traffic growth fueled by ever-emerging new applications. The book is divided into four parts: Optical Subsystems for Transmission and Switching, Core Networks, Datacenter and Super-Computer Networking, and Optical Access and Wireless Networks. Each chapter is written by world-renown experts that represent academia, industry, and international government and regulatory agencies. Every chapter provides a complete picture of its field, from entry-level information to a snapshot of the respective state-of-the-art technologies to emerging research trends, providing something useful for the novice who wants to get familiar with the field to the expert who wants to get a concise view of future trends.
Download or read book Progress in Optics written by and published by Elsevier. This book was released on 2011-09-21 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Optics
Book Synopsis Journal of the Optical Society of America by :
Download or read book Journal of the Optical Society of America written by and published by . This book was released on 1993 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Optical Wireless Communication by : Xizheng Ke
Download or read book Handbook of Optical Wireless Communication written by Xizheng Ke and published by Springer Nature. This book was released on with total page 1881 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Optics Systems and Technology by :
Download or read book Adaptive Optics Systems and Technology written by and published by . This book was released on 2002 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Scintillation: Volume 1, Geometrical Optics by : Albert D. Wheelon
Download or read book Electromagnetic Scintillation: Volume 1, Geometrical Optics written by Albert D. Wheelon and published by Cambridge University Press. This book was released on 2001-09-06 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two volumes that make up this book provide a modern reference and comprehensive tutorial to the subject, treating both optical and microwave propagation. This first volume deals with phase and angle-of-arrival measurement errors.
Book Synopsis Near-Earth Laser Communications by : Hamid Hemmati
Download or read book Near-Earth Laser Communications written by Hamid Hemmati and published by CRC Press. This book was released on 2018-10-03 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invented more than a hundred years ago by Alexander Graham Bell, the technology of free-space optical communications, or lasercom, has finally reached the level of maturity required to meet a growing demand for operational multi-giga-bit-per-second data rate systems communicating to and from aircrafts and satellites. Putting the emphasis on near-earth links, including air, LEO, MEO, and GEO orbits, Near-Earth Laser Communications presents a summary of important free-space laser communication subsystem challenges and discusses potential ways to overcome them. This comprehensive reference provides up-to-date information on component and subsystem technologies, fundamental limitations, and approaches to reach those limits. It covers basic concepts and state-of-the-art technologies, emphasizing device technology, implementation techniques, and system trades. The authors discuss hardware technologies and their applications, and also explore ongoing research activities and those planned for the near future. The analytical aspects of laser communication have been covered to a great extent in several books. However, a detailed approach to system design and development, including trades on subsystem choices and implications of the hardware selection for satellite and aircraft telecommunications, is missing. Highlighting key design variations and critical differences between them, this book distills decades’ worth of experience into a practical resource on hardware technologies.
Book Synopsis Free-Space Laser Communications by : Arun K. Majumdar
Download or read book Free-Space Laser Communications written by Arun K. Majumdar and published by Springer Science & Business Media. This book was released on 2010-05-05 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive tutorial on the emerging technology of free-space laser communications (FSLC). The book offers an all-inclusive source of information on the basics of FSLC, and a review of state-of-the-art technologies. Coverage includes atmospheric effects for laser propagation and FSLC systems performance and design. Free-Space Laser Communications is a valuable resource for engineers, scientists and students interested in laser communication systems designed for the atmospheric optical channel.
Book Synopsis Diffraction-Limited Imaging with Large and Moderate Telescopes by : Swapan K. Saha
Download or read book Diffraction-Limited Imaging with Large and Moderate Telescopes written by Swapan K. Saha and published by World Scientific. This book was released on 2007 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the fundamentals of wave optics, polarization, interference, diffraction, imaging, and the origin, properties, and optical effects of turbulence in the Earth's atmosphere. Techniques developed during the last few decades to overcome atmospheric image degradation (including passive methods, speckle interferometry in particular, and active methods such as adaptive optics), are highlighted. Also discussed are high resolution sensors, image processing, and the astronomical results obtained with these techniques.
Download or read book Optics Letters written by and published by . This book was released on 2006 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Optics written by and published by . This book was released on 1998 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
