Structures Technology For Large Radio And Radar Telescope Systems
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The Paraboloidal Reflector Antenna In Radio Astronomy And Communication
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Author : Jacob W. M. Baars
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-08-06
The Paraboloidal Reflector Antenna In Radio Astronomy And Communication written by Jacob W. M. Baars 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 2007-08-06 with Science categories.
Reflector antennas are widely used in the microwave and millimeter wavelength domain. Radio astronomers have developed techniques of calibration of large antennas with radio astronomical methods. These have not been comprehensively described. This text aims to fill this gap. It takes a practical approach to the characterisation of antennas. All calculations and results in the form of tables and figures have been made with Mathematica by Wolfram Research. The reader can use the procedures for the implementation of his own input data. The book should be of use to all who are involved in the design and calibration of large antennas, like ground station managers and engineers, practicing radio astronomers and graduate students in radio astronomy and communication technology.
Structures Technology For Large Radio And Radar Telescope Systems
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Author : James W. Mar
language : en
Publisher: Mit Press
Release Date : 2003-02-01
Structures Technology For Large Radio And Radar Telescope Systems written by James W. Mar and has been published by Mit Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-02-01 with Technology & Engineering categories.
The national interest in large radio and radar telescope systems spans the entire engineering and scientific community, and there is every indication that the country will embark upon the construction of still more of these systesm in the near future. Radio and radar astronomers now require very large mechanical devices. The system specifications lead to structural criteria which are unique and outside the immediate interest and/or capability of most of the structures community.Radio and radar telescopes and the radomes that may protect them are often enormous structures. Their design presents extremely complicated technological problems. These instruments must operate with precision in varied environments and environmental conditions. Radomes must protect radio and radar antennas without seriously interfering with the incoming information.The Office of Naval Research and MIT cosponsored an international conference in 1967 on the structural problems associated with large radio and radar telescope systems, the proceedings of which are collected here. The papers in this books deal with the problems outlined above from several points of view. The contents of the papers can be grouped roughly as follows:1. Requirements and standards for supporting structures, tracking equipment, antennas, and radomes.2. Design and performance of existing systems.3. Theoretical analysis of the structures of supporting structures, antennas, and radomes. In some cases the analysis is made for a structure under stress. Computer techniques are described for several problems.4. Methods for evaluating actual or predicted performance of various structures. Here again computer techniques are employed.
Structures Technology For Large Radio And Radar Telescope Systems
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Author : James W. Mar
language : en
Publisher: MIT Press (MA)
Release Date : 1969
Structures Technology For Large Radio And Radar Telescope Systems written by James W. Mar and has been published by MIT Press (MA) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Technology & Engineering categories.
The national interest in large radio and radar telescope systems spans the entire engineering and scientific community, and there is every indication that the country will embark upon the construction of still more of these systesm in the near future. Radio and radar astronomers now require very large mechanical devices. The system specifications lead to structural criteria which are unique and outside the immediate interest and/or capability of most of the structures community. Radio and radar telescopes and the radomes that may protect them are often enormous structures. Their design presents extremely complicated technological problems. These instruments must operate with precision in varied environments and environmental conditions. Radomes must protect radio and radar antennas without seriously interfering with the incoming information. The Office of Naval Research and MIT cosponsored an international conference in 1967 on the structural problems associated with large radio and radar telescope systems, the proceedings of which are collected here. The papers in this books deal with the problems outlined above from several points of view. The contents of the papers can be grouped roughly as follows: 1. Requirements and standards for supporting structures, tracking equipment, antennas, and radomes. 2. Design and performance of existing systems. 3. Theoretical analysis of the structures of supporting structures, antennas, and radomes. In some cases the analysis is made for a structure under stress. Computer techniques are described for several problems. 4. Methods for evaluating actual or predicted performance of various structures. Here again computer techniques are employed.
Integrated Modeling Of Telescopes
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Author : Torben Andersen
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-06-23
Integrated Modeling Of Telescopes written by Torben Andersen 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 2011-06-23 with Science categories.
Ground- or space-based telescopes are becoming increasingly more complex and construction budgets are typically in the billion dollar range. Facing costs of this magnitude, availability of engineering tools for prediction of performance and design optimization is imperative. Establishment of simulation models combining different technical disciplines such as Structural Dynamics, Control Engineering, Optics and Thermal Engineering is indispensable. Such models are normally called Integrated Models because they involve many different disciplines. The models will play an increasingly larger role for design of future interdisciplinary optical systems in space or on ground. The book concentrates on integrated modeling of optical and radio telescopes but the techniques presented will be applicable to a large variety of systems. Hence, the book will be of interest to optical and radio telescope designers, designers of spacecrafts that include optical systems, and to designers of various complex defense systems. The book may also find use as a textbook for undergraduate and graduate courses within the field. "Adaptive Optics" is an exciting and relatively new field, originally dedicated to correction for blurring when imaging through the atmosphere. Although this objective is still of high importance, the concept of Adaptive Optics has recently evolved further. Today, the objective is not only to correct for atmospheric turbulence effects but also for a range of static and dynamical telescope aberrations. The notion of adaptive optics has expanded to the field of "Wavefront Control", correcting for a variety of system aberrations. Wavefront control systems maintain form and position of optical elements with high precision under static and dynamical load. In many ways, such systems replace the steel structures of traditional optical systems, thereby providing much lighter systems with a performance not possible before. Integrated Modeling is the foremost tool for studies of Wavefront Control for telescopes and complex optics and is therefore now of high importance. Springer has recently published two books on telescopes, "Reflecting Telescope Optics" by R. Wilson, and "The Design and Construction of Large Optical Telescopes" by P. Bely. Noting that a new (and expensive) generation of Extremely Large Telescopes with apertures in the 30-100 m range is on the way, the present book on integrated modeling is a good match to the existing books and an appropriate specialization and continuation of some subjects dealt with in those books.
Thermal Design And Thermal Behaviour Of Radio Telescopes And Their Enclosures
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Author : Albert Greve
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-03-17
Thermal Design And Thermal Behaviour Of Radio Telescopes And Their Enclosures written by Albert Greve 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 2010-03-17 with Science categories.
Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictable way. Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures reviews the design and construction principles of radio telescopes in view of thermal aspects and heat transfer with the variable thermal environment; it explains supporting thermal model calculations and the application and efficiency of thermal protection and temperature control; it presents many measurements illustrating the thermal behaviour of telescopes in the environment of their observatory sites. The book benefits scientists and radio/communication engineers, telescope designers and construction firms as well as telescope operators, observatory staff, but also the observing astronomer who is directly confronted with the thermal behaviour of a telescope.
A Selected Listing Of Nasa Scientific And Technical Reports
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1970
A Selected Listing Of Nasa Scientific And Technical Reports written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Aeronautics categories.
Nasa Scientific And Technical Reports And Publications For 1969 A Selected Listing
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1970
Nasa Scientific And Technical Reports And Publications For 1969 A Selected Listing written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Science categories.
Proceedings Of The Second Conference On Matrix Methods In Structural Mechanics
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Author : L. Berke
language : en
Publisher:
Release Date : 1969
Proceedings Of The Second Conference On Matrix Methods In Structural Mechanics written by L. Berke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Matrices categories.
Reprints National Radio Astronomy Observatory Green Bank W Va
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Author : National Radio Astronomy Observatory (U.S.)
language : en
Publisher:
Release Date : 1974
Reprints National Radio Astronomy Observatory Green Bank W Va written by National Radio Astronomy Observatory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Astronomy categories.
Nasa Scientific And Technical Reports
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Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1970
Nasa Scientific And Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Aeronautics categories.