General Summary for a Prototype Antenna for the Atacama Large Millimeter Array Radio Telescope PDF Download
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Author:
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Category : Antenna arrays
Languages : en
Pages :
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Author:
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ISBN:
Category : Antenna arrays
Languages : en
Pages :
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Author:
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Category : Antenna arrays
Languages : en
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Author: Hinrich Munzner
Publisher:
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Category : Antenna arrays
Languages : en
Pages :
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Author:
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Category : Antenna arrays
Languages : en
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Author: Jacob W. M. Baars
Publisher: Springer Science & Business Media
ISBN: 0387697330
Category : Science
Languages : en
Pages : 270
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Radio astronomers have developed techniques of calibration of large reflector antennas with radio astronomical methods, but these have not been comprehensively described. This text aims to fill this gap, taking 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.
Author: National Radio Astronomy Observatory (U.S.)
Publisher:
ISBN:
Category : Millimeter astronomy
Languages : en
Pages :
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Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309465680
Category : Science
Languages : en
Pages : 75
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Book Description
The radio frequency spectrum is a limited resource with ever increasing demand from an expansive range of applicationsâ€"all the way from commercial, such as mobile phones, to scientific, such as hurricane monitoring from space. Since radio waves do not stop at national borders, international regulation is necessary to ensure effective use of the radio spectrum for all parties. Every 2 to 5 years, the International Telecommunication Union convenes a World Radiocommunication Conference (WRC) to review and revise the international radio regulations. This report provides guidance to U.S. spectrum managers and policymakers as they prepare for the WRC in 2019. While the resulting document is targeted primarily at U.S. agencies dealing with radio spectrum issues, other Administrations and foreign scientific users may find its recommendations useful in their own WRC planning.
Author: Kenneth I. Kellermann
Publisher: Springer Nature
ISBN: 3030323455
Category : Astronomy
Languages : en
Pages : 652
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This open access book on the history of the National Radio Astronomy Observatory covers the scientific discoveries and technical innovations of late 20th century radio astronomy with particular attention to the people and institutions involved. The authors have made extensive use of the NRAO Archives, which contain an unparalleled collection of documents pertaining to the history of radio astronomy, including the institutional records of NRAO as well as the personal papers of many of the pioneers of U.S. radio astronomy. Technical details and extensive citations to original sources are given in notes for the more technical readers, but are not required for an understanding of the body of the book. This book is intended for an audience ranging from interested lay readers to professional researchers studying the scientific, technical, political, and cultural development of a new science, and how it changed the course of 20th century astronomy.
Author: Albert Greve
Publisher: Springer Science & Business Media
ISBN: 3642038670
Category : Science
Languages : en
Pages : 409
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Book Description
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.
Author:
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Category : Government purchasing
Languages : en
Pages : 2040
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