The Refractive Index Structure Parameter Atmospheric Optical Turbulence Model Cn2
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The Refractive Index Structure Parameter Atmospheric Optical Turbulence Model Cn2
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Author :
language : en
Publisher:
Release Date : 1998
The Refractive Index Structure Parameter Atmospheric Optical Turbulence Model Cn2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
The CN2 model is a semi-empirical algorithm that makes a quantitative assessment of atmospheric optical turbulence. The algorithm uses surface layer gradient assumptions applied to two levels of discrete vertical profile data to calculate the refractive index structure parameter. Model results can be obtained for unstable, stable, and near-neutral atmospheric conditions. The CN2 model has been benchmarked on data from the REBAL'92 field study. The model will shortly be added to the Electro- Optics Atmospheric Effects Library (EOSAEL). This report gives technical and user's guide information on the CN2 model.
Adaptive Optics For Astronomical Telescopes
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Author : John W. Hardy
language : en
Publisher:
Release Date : 1998
Adaptive Optics For Astronomical Telescopes written by John W. Hardy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Language Arts & Disciplines categories.
This book by one of the leaders in adaptive optics covers the fundamental theory and then describes in detail how this technology can be applied to large ground-based telescopes to compensate for the effects of atmospheric turbulence. It includes information on basic adaptive optics components and technology, and has chapters devoted to atmospheric turbulence, optical image structure, laser beacons, and overall system design. The chapter on system design is particularly detailed and includes performance estimation and optimization. Combining a clear discussion of physical principles with numerous real-world examples, this book will be a valuable resource for all graduate students and researchers in astronomy and optics.
Coding For Optical Channels
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Author : Ivan Djordjevic
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-04-05
Coding For Optical Channels written by Ivan Djordjevic and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04-05 with Technology & Engineering categories.
In order to adapt to the ever-increasing demands of telecommunication needs, today’s network operators are implementing 100 Gb/s per dense wavelength division multiplexing (DWDM) channel transmission. At those data rates, the performance of fiberoptic communication systems is degraded significantly due to intra- and inter-channel fiber nonlinearities, polarization-mode dispersion (PMD), and chromatic dispersion. In order to deal with those channel impairments, novel advanced techniques in modulation and detection, coding and signal processing are needed. This unique book represents a coherent and comprehensive introduction to the fundamentals of optical communications, signal processing and coding for optical channels. It is the first to integrate the fundamentals of coding theory with the fundamentals of optical communication.
Optical Wireless Communications
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Author : Z. Ghassemlooy
language : en
Publisher: CRC Press
Release Date : 2019-04-30
Optical Wireless Communications written by Z. Ghassemlooy and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-30 with Technology & Engineering categories.
The 2nd Edition of Optical Wireless Communications: System and Channel Modelling with MATLAB® with additional new materials, is a self-contained volume that provides a concise and comprehensive coverage of the theory and technology of optical wireless communication systems (OWC). The delivery method makes the book appropriate for students studying at undergraduate and graduate levels as well as researchers and professional engineers working in the field of OWC. The book gives a detailed description of OWC, focusing mainly on the infrared and visible bands, for indoor and outdoor applications. A major attraction of the book is the inclusion of Matlab codes and simulations results as well as experimental test-beds for free space optics and visible light communication systems. This valuable resource will aid the readers in understanding the concept, carrying out extensive analysis, simulations, implementation and evaluation of OWC links. This 2nd edition is structured into nine compact chapters that cover the main aspects of OWC systems: History, current state of the art and challenges Fundamental principles Optical source and detector and noise sources Modulation, equalization, diversity techniques Channel models and system performance analysis Visible light communications Terrestrial free space optics communications Relay-based free space optics communications Matlab codes. A number of Matlab based simulation codes are included in this 2nd edition to assist the readers in mastering the subject and most importantly to encourage them to write their own simulation codes and enhance their knowledge.
Communications Signal Processing And Systems
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Author : Qilian Liang
language : en
Publisher: Springer Nature
Release Date : 2022-03-30
Communications Signal Processing And Systems written by Qilian Liang and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-30 with Technology & Engineering categories.
This book brings together papers presented at the 2021 International Conference on Communications, Signal Processing, and Systems, which provides a venue to disseminate the latest developments and to discuss the interactions and links between these multidisciplinary fields. Spanning topics ranging from communications, signal processing and systems, this book is aimed at undergraduate and graduate students in Electrical Engineering, Computer Science and Mathematics, researchers and engineers from academia and industry as well as government employees (such as NSF, DOD and DOE).
Optical Fiber Telecommunications Vib
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Author : Hamid Hemmati
language : en
Publisher: Elsevier Inc. Chapters
Release Date : 2013-05-11
Optical Fiber Telecommunications Vib written by Hamid Hemmati and has been published by Elsevier Inc. Chapters this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-11 with Technology & Engineering categories.
Satellite-based communication systems of today are increasingly capacity limited. Based on radio frequency or microwave (generically RF) technologies, current state-of-the-art satellite communications (satcom) are often constrained by hardware and spectrum allocation limitations. Consequently, mobile payload sensors and instruments (on satellite or aircraft) are often implemented with restricted capacity to better match that of the host platform. Such limitations are expected to worsen as future interplanetary, deep-space, and manned missions use more sophisticated data-intensive sensors and as the demand for information—and a bigger return on the space-exploration investment—continues to increase.
Propagation And Imaging Through The Atmosphere
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Author :
language : en
Publisher:
Release Date : 1998
Propagation And Imaging Through The Atmosphere written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aerosols categories.
Free Space Optical Communication
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Author : A. Arockia Bazil Raj
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2015-12-18
Free Space Optical Communication written by A. Arockia Bazil Raj and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-18 with Technology & Engineering categories.
Recent progress in ICT has exceeded our expectations for meeting the requirement of multimedia society in the 21st century. The FSOC is considered to be one of the key technologies for realizing very high speed multi GbPs large-capacity terrestrial and aerospace communications. In FSOC, the optical beam propagation in the turbulent atmosphere is severely affected by various factors suspended in the channel. Wavefront aberration correcting with continuous beam alignment are the key requirements for a successful installation of an FSOC system which are the main contributions in our book. Establishment of FSOC setups, development of accurate weather station, measurement of atmospheric attenuation (Att) and turbulence strength (Cn2), development of new models to predict the Att and Cn2, design of Response Surface Model and Artificial Neural Network based on controller, implementation of neural-controller in FPGA and attaining the BER of 6.4x10^-9 during different outdoor environments. All the original contributions, newness, findings and experimental results etc., are reported in the book. Subject of work; Wireless Optical Communication. The content of the book can be referred by various application designers and/or academicians for working on FSOC transceiver design, laser cutting, laser metrology, laser surgery, beam focusing & pointing, beacon positioning and coupling etc. Further, all necessary MATLAB and VHDL codes are also given on appropriate pages for the readers' quick/ clear understanding.
Ubiquitous Networking
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Author : Noureddine Boudriga
language : en
Publisher: Springer
Release Date : 2018-11-12
Ubiquitous Networking written by Noureddine Boudriga and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-12 with Computers categories.
This book constitutes the refereed proceedings of the 4th International Symposium on Ubiquitous Networking, UNet 2018, held in Hammamet, Morocco, in May 2018. The 35 full papers presented together with 5 short papers in this volume were carefully reviewed and selected from 87 submissions. The focus of UNet is on technical challenges and solutions related to such a widespread adoption of networking technologies, including broadband multimedia, machine-to-machine applications, Internet of things, security and privacy, data engineering, sensor networks and RFID technologies.
Laser Communication With Constellation Satellites Uavs Haps And Balloons
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Author : Arun K. Majumdar
language : en
Publisher: Springer Nature
Release Date : 2022-06-24
Laser Communication With Constellation Satellites Uavs Haps And Balloons written by Arun K. Majumdar and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-24 with Technology & Engineering categories.
This book presents posits a solution to the current limitations in global connectivity by introducing a global laser/optical communication system using constellation satellites, UAVs, HAPs and Balloons. The author outlines how this will help to satisfy the tremendous increasing demand for data exchange and information between end-users worldwide including in remote locations. The book provides both fundamentals and the advanced technology development in establishing worldwide communication and global connectivity using, (I) All-Optical technology, and (ii) Laser/Optical Communication Constellation Satellites (of different types, sizes and at different orbits), UAVs, HAPs (High Altitude Platforms) and Balloons. The book discusses step-by-step methods to develop a satellite backbone in order to interconnect a number of ground nodes clustered within a few SD-WAN (software-defined networking) in a wide area network (WAN) around the world in order to provide a fully-meshed communication network. This book pertains to anyone in optical communications, telecommunications, and system engineers, as well as technical managers in the aerospace industry and the graduate students, and researchers in academia and research laboratory. Proposed a solution to the limitations in global connectivity through a global laser/optical communication system using constellation satellites, UAVs, HAPs and Balloons; Provides both fundamentals and the advanced technology development in establishing global communication connectivity using optical technology and communication constellation satellites; Includes in-depth coverage of the basics of laser/optical communication constellation satellites.