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Author : Joseph H. Pierluissi
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.:/5 (37 download)
Download or read book Atmospheric Propagation Studies in the Infrared and Millimeter Wave Regions written by Joseph H. Pierluissi and published by . This book was released on 1982 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher :
ISBN 13 : 9789283505488
Total Pages : pages
Book Rating : 4.5/5 (54 download)
Download or read book AGARD Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 359 pages
Book Rating : 4.:/5 (227 download)
Download or read book Conference Proceedings on Atmospheric Propagation in the UV, Visible, IR and MM-Wave Region and Related Systems Aspects Held in Copenhagen, Denmark on 9- 13th October 1989 written by and published by . This book was released on 1990 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric propagation of electromagnetic waves at frequencies above 30 GHz, i.e. millimetre (MM) waves and infra-red (IR), visible and to some extent also ultra-violet (UV) radiation, is of importance to many current and future military applications. Propagation phenomena affect and often limit navigation, communications, surveillance, search, targe acquisition, fire control, autonomous weapons guidance, kill assessment, countermeasures and medium to high power laser applications. Recent advances in components and technology have prompted extensive studies and novel applications in the above wavelength region. Specifically, second generation infra-red detector technology, smart image processing, as well as active coherent detection systems, i.e. millimeter wave and laser radars, have required dedicated propagation studies, including much longer ranges over land and sea, multiple scattering effects and especially turbulence induced systems limitations. The following topics have been discussed: (1) Propagation measurements; (2) Propagation models; (3) Sensing of the propagation environment; (4) System aspects and performance modelling; and (5) Countermeasures. Keywords: Propagation models; Atmospheric absorption; Laser radar; Sensing; Performance modelling.
Author : Institute for Telecommunication Sciences
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.0/5 ( download)
Download or read book Atmospheric Propagation Properties in the 10- to 75-GHz Region written by Institute for Telecommunication Sciences and published by . This book was released on 1969 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expansion of telecommunication services into the millimeter wave region prompts a careful look at the limitations of the atmosphere that can give rise to severe signal degradations. In Part I the loss and scatter mechanisms in the 10- to 40- GHz range are examined. It is concluded that there is a need for further theoretical and experimental work on the atmospheric propagation properties in order to support the engineering efforts in designing reliable, useful systems. In Part II the discussions are extended to the 40- to 75 -GHz region where absorption by oxygen dominates. In this region, communication through the atmosphere is not practical; however, the oxygen absorption has a great potential for remote sensing of atmospheric variables, and for special (short-range communication) applications. Unsolved problems of the propagation medium are discussed as a basis for formulating proposals; and the objectives of an experimental program for studying oxygen dispersion and absorption are given.
Author : Kenneth J. Button
Publisher : Elsevier
ISBN 13 : 0323153992
Total Pages : 363 pages
Book Rating : 4.3/5 (231 download)
Download or read book Infrared and Millimeter Waves V9 written by Kenneth J. Button and published by Elsevier. This book was released on 1983-01-01 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Millimeter Waves, Volume 9: Millimeter Components and Techniques, Part I compiles the work of several authors while focusing on certain aspects of infrared and millimeter waves, such as sources of radiation, instrumentation, and millimeter systems. This volume deals with millimeter components and techniques. Chapter 1 covers millimeter wave communications, and then the succeeding chapter discusses a comparative study of millimeter waves and transmission lines. This book then tackles dielectric waveguide electrooptic devices, as well as millimeter-wave propagation and remote sensing of the atmosphere, which are covered in Chapter 4. The fifth chapter presents the technology of large radio telescopes for millimeter and submillimeter. The next chapter explains a gyrotron study program, and the last chapter discusses multimode analysis of quasi-optical gyrotrons and gyroklystrons. This book will be of great use for researchers or professionals whose work involves infrared and millimeter waves.
Author : Pranab Kumar Karmakar
Publisher : CRC Press
ISBN 13 : 1351833316
Total Pages : 260 pages
Book Rating : 4.3/5 (518 download)
Download or read book Microwave Propagation and Remote Sensing written by Pranab Kumar Karmakar and published by CRC Press. This book was released on 2017-12-19 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because prevailing atmospheric/troposcopic conditions greatly influence radio wave propagation above 10 GHz, the unguided propagation of microwaves in the neutral atmosphere can directly impact many vital applications in science and engineering. These include transmission of intelligence, and radar and radiometric applications used to probe the atmosphere, among others. Where most books address either one or the other, Microwave Propagation and Remote Sensing: Atmospheric Influences with Models and Applications melds coverage of these two subjects to help readers develop solutions to the problems they present. This reference offers a brief, elementary account of microwave propagation through the atmosphere and discusses radiometric applications in the microwave band used to characterize and model atmospheric constituents, which is also known as remote sensing. Summarizing the latest research results in the field, as well as radiometric models and measurement methods, this book covers topics including: Free space propagation Reflection, interference, polarization, and other key aspects of electromagnetic wave propagation Radio refraction and its effects on propagation delay Methodology of estimating water vapor attenuation using radiosonde data Knowledge of rain structures and use of climatological patterns to estimate/measure attenuation of rain, snow, fog, and other prevalent atmospheric particles and human-made substances Dual/multifrequency methodology to deal with the influence of clouds on radiometric attenuation Deployment of microwaves to ascertain various tropospheric conditions Composition and characteristics of the troposphere, to help readers fully understand microwave propagation Derived parameters of water, free space propagation, and conditions and variable constituents such as water vapor and vapor pressure, density, and ray bending
Author :
Publisher :
ISBN 13 :
Total Pages : 880 pages
Book Rating : 4.3/5 (91 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists 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.
Author : Jeffrey J. Sitterle
Publisher :
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.:/5 (155 download)
Download or read book Signal Models and Processing for Quasi-optical Atmospheric Propagation Studies with an Application to Near-millimeter Waves written by Jeffrey J. Sitterle and published by . This book was released on 1987 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alan T Waterman (Jr)
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (227 download)
Download or read book Research on the Interaction of the Lower Atmosphere with Electromagnetic Waves of Millimeter Wavelength Through Line-of-Sight Propagation Studies written by Alan T Waterman (Jr) and published by . This book was released on 1973 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a continuing program of research in the propagation of millimeter waves over a 28-km line-of-sight path using sampling arrays of antennas. Experimentally, two frequencies (34.89 and 11.63 GHz) are used. Directly measured quantities are amplitude and relative phase at each of eight receiving antennas (on the higher frequency), as received from each of two transmitting antennas. The report describes the data-taking procedure, recent modifications made to the equipment, and various data-reduction techniques. Emphasis is on the small signal fluctuations arising from atmospheric turbulence. (Modified author abstract).
Author : E. E. Altshuler
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (227 download)
Download or read book Millimeter-Wave Propagation and Remote Sensing of the Atmosphere written by E. E. Altshuler and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The propagation characteristics in the millimeter-wave region of the spectrum are of particular interest because the waves have a strong interaction with lower atmospheric gases and particulates. The effects of this interaction are twofold: on the other hand, atmospheric absorption, scattering and refraction limit the performance of millimeter-wave systems; on the other hand, this interaction allows the propagated wave to be used as a diagnostic tool to probe lower atmospheric structure. The principal applications of millimeter waves have been in the areas of communications, radar, and remote sensing. The availability of large bandwidths makes this region of the spectrum particularly attractive for high data rate communications. Because the angular resolution of an aperture is inversely proportional to wavelength, higher resolution antennas are achievable at millimeter waves than at longer wavelengths.
Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher :
ISBN 13 :
Total Pages : 526 pages
Book Rating : 4.:/5 (31 download)
Download or read book AGARD Index of Publications written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1989 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Brussaard
Publisher : Springer Science & Business Media
ISBN 13 : 9780412562303
Total Pages : 372 pages
Book Rating : 4.5/5 (623 download)
Download or read book Atmospheric Modelling and Millimetre Wave Propagation written by G. Brussaard and published by Springer Science & Business Media. This book was released on 1994-12-31 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the fundamental physics of radiowave interaction in the earth's atmosphere at microwave and millimetre wavelengths and describes the latest techniques for predicting the performance of radio systems operating in these bands.
Author : Richard B. Gomez
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (318 download)
Download or read book Atmospheric Effects on Electro-optical, Infrared, and Millimeter Wave Systems Performance written by Richard B. Gomez and published by . This book was released on 1981 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Institute for Telecommunication Sciences
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (89 download)
Download or read book Atmospheric Propagation Properties in the 10- to 75-GHz Region written by Institute for Telecommunication Sciences and published by . This book was released on 1969 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.3/5 (91 download)
Download or read book Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research written by and published by . This book was released on 1996 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wallace Manheimer
Publisher : Springer Science & Business Media
ISBN 13 : 9781563963773
Total Pages : 358 pages
Book Rating : 4.9/5 (637 download)
Download or read book Plasma Science and the Environment written by Wallace Manheimer and published by Springer Science & Business Media. This book was released on 1996-11-14 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Written by some of the world's foremost experts, the articles in this book show how plasma science can be applied to environmental problems, including atmospheric sensing and modification, energy conservation, reduction of air pollution, and processing of ordinary and radioactive wastes. Atmospheric CFC's might be zapped with big lasers. Urban air pollution could be removed by large convection towers built in or near cities. And weapons-grade plutonium can be destroyed with specially designed particle accelerators. Some of the technologies described here are in use already, while others are in the prototype stage, or are speculative approaches deserving of further study." "Contents" Written by some of the world's foremost experts, the articles in this book show how plasma science can be applied to environmental problems, including atmospheric sensing and modification, energy conservation, reduction of air pollution, and processing of ordinary and radioactive wastes. Atmospheric CFC's might be zapped with big lasers. Urban air pollution could be removed by large convection towers built in or near cities. And weapons-grade plutonium can be destroyed with specially designed particle accelerators. Some of the technologies described here are in use already, while others are in the prototype stage, or are speculative approaches deserving of further study.
Author : S. F. Clifford
Publisher :
ISBN 13 :
Total Pages : 155 pages
Book Rating : 4.:/5 (227 download)
Download or read book Investigation of Millimeter Wave Propagation in the Atmosphere written by S. F. Clifford and published by . This book was released on 1986 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the results of five years of research conducted on the propagation of millimeter waves through the atmospheric surface layer. At a site in Flatville, Illinois, radiation in the frequency range from 116 GHz to 230 GHz was propagated along at 1/4 km horizontal path instrumented with multiple meteorological sensors to characterize the state of the atmosphere. The millimeter wave beam propagated at a height of 3.7m to a receiver van that had four receiver antennas spaced in a non-redundant manner to allow measurements of amplitude, phase difference and mutual coherence at spacings from 1.43m to 10m. Comparisons between the clear air propagation data and theory showed close agreement. (Author).
