The Paraboloidal Reflector Antenna in Radio Astronomy and Communication PDF Download
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Author: Jacob W. M. Baars
Publisher: Springer Science & Business Media
ISBN: 0387697349
Category : Science
Languages : en
Pages : 270
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Book Description
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: Jacob W. M. Baars
Publisher: Springer Science & Business Media
ISBN: 0387697349
Category : Science
Languages : en
Pages : 270
Get Book Here
Book Description
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: Andre HECK
Publisher: Springer Science & Business Media
ISBN: 1402053010
Category : Science
Languages : en
Pages : 592
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Book Description
Astronomy isthemostancientsciencehumanshavepracticedonEarth. Itisascienceofextremesandoflargenumbers:extremesoftime–fromthe big bang to in?nity –, of distances, of temperatures, of density and masses, ofmagnetic?eld,etc.Itisasciencewhichishighlyvisible,notonlybecause stars and planets are accessible in the sky to the multitude, but also - cause the telescopes themselves are easily distinguishable, usually on top of scenic mountains, and also because their cost usually represent a subst- tialproportionofthenation’sbudgetandofthetaxpayerscontributionsto that budget. As such, astronomy cannot pass unnoticed. It touches on the origins of matter, of the Universe where we live, on life and on our destiny. It touches on philosophy as well as on religion. Astronomy is the direct c- tactofhumankindwithitsoriginsandtheimmensityofuniversalnature.It is indeed a science of observation where experimentation is practically - possible and which is ruled by mathematics, physics, chemistry, statistical analysis and modelling, while o?ering the largest number of veri?cations of the most advanced theories of fundamental physics such as general r- st ativity and gravitation. At the beginning of the 21 century astronomy is clearly a multidisciplinary activity touching on all aspects of science. It is therefore logical that in the past and still now, astronomy has attracted the most famous scientists, be they pure observers, mathematicians, physicists, biologists, experimentalists, and even politicians.
Author: Jay Pasachoff
Publisher: Cambridge University Press
ISBN: 9780521842624
Category : Science
Languages : en
Pages : 296
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Book Description
Astronomy is taught in schools worldwide, but few schoolteachers have any background in astronomy or astronomy teaching, and available resources may be insufficient or non-existent. This volume highlights the many places for astronomy in the curriculum; relevant education research and 'best practice'; strategies for pre-service and in-service teacher education; the use of the Internet and other technologies; and the role that planetariums, observatories, science centres, and organisations of professional and amateur astronomers can play. The special needs of developing countries, and other under-resourced areas are also highlighted. The book concludes by addressing how the teaching and learning of astronomy can be improved worldwide. This valuable overview is based on papers and posters presented by experts at a Special Session of the International Astronomical Union.
Author: Library of Congress
Publisher:
ISBN:
Category : Subject headings, Library of Congress
Languages : en
Pages : 1816
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Book Description
Author: Library of Congress. Cataloging Policy and Support Office
Publisher:
ISBN:
Category : Subject headings, Library of Congress
Languages : en
Pages : 1938
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Book Description
Author: Lars Lindberg Christensen
Publisher: Springer Science & Business Media
ISBN: 0387499601
Category : Science
Languages : en
Pages : 267
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Book Description
This hands-on guide offers practical advice on all aspects of science communication. It features a tightly interwoven fabric of issues: product types, target groups, written communication, visual communication, validation processes, practices of efficient workflow, distribution, promotion, advertising, and much more. Extremely practical, the guide provides the necessary "shortcuts" to produce outreach products of high quality. All concepts are explained with simple terms and illustrative examples while check lists and short "to-the-point" overviews enable rapid progress and quick results. New science communicators as well as seasoned presenters will find this guide both helpful and inspirational.
Author: Karl F. Warnick
Publisher: Cambridge University Press
ISBN: 1108423922
Category : Mathematics
Languages : en
Pages : 471
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Book Description
Discover a modern approach to the analysis, modeling and design of high sensitivity phased arrays. Network theory, numerical methods and computational electromagnetic simulation techniques are uniquely combined to enable full system analysis and design optimization. Beamforming and array signal processing theory are integrated into the treatment from the start. Digital signal processing methods such as polyphase filtering and RFI mitigation are described, along with technologies for real-time hardware implementation. Key concepts from interferometric imaging used in radio telescopes are also considered. A basic development of theory and modeling techniques is accompanied by problem sets that guide readers in developing modeling codes that retain the simplicity of the classical array factor method while incorporating mutual coupling effects and interactions between elements. Combining current research trends with pedagogical material suitable for a first-year graduate course, this is an invaluable resource for students, teachers, researchers, and practicing RF/microwave and antenna design engineers.
Author: Günter D. Roth
Publisher: Springer Science & Business Media
ISBN: 3540763791
Category : Science
Languages : en
Pages : 727
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Book Description
The Compendium of Practical Astronomy is unique. The practical astronomer, whether student, novice or accomplished amateur, will find this handbook the most comprehensive, up-to-date and detailed single guide to the subject available. It is based on Roth’s celebrated German language handbook for amateur astronomers, which first appeared over 40 years ago.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 800
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 374
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Book Description
