Very Long Baseline Interferometer
DOWNLOAD
Download Very Long Baseline Interferometer PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Very Long Baseline Interferometer book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Very Long Baseline Interferometer
DOWNLOAD
Author : Fujinobu Takahashi
language : en
Publisher: IOS Press
Release Date : 2000
Very Long Baseline Interferometer written by Fujinobu Takahashi and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Technology & Engineering categories.
VLBI is an acronym for Very Long Baseline Inferometry, and can be roughly divided into two areas of application. The first area is in geodesy, which is covered in considerable detail in this book. The second area is in astrometry, or radio astronomy, which is only briefly treated in the book.
Very Long Baseline Interferometry
DOWNLOAD
Author : Marcello Felli
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Very Long Baseline Interferometry written by Marcello Felli 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 2012-12-06 with Science categories.
The quest for high resolution has preoccupied radio astronomers ever since radio waves were first detected from space fifty years ago. This venture was par ticularly stimulated by the discovery of quasars, and led to the development of interferometer techniques using baselines of transglobal dimensions. These meth ods have become known as Very Long Baseline Interferometry (VLBI). Arrays of radio telescopes situated all over the Earth (or even in space) are regularly used for researches in radio astronomy, reaching resolutions as small as a fraction of a milli arcsecond. The technique also allows the measurement of the positions of the radio telescopes to a few millimeters and so VLBI has become a major tool in geodesy and the study of the rotation of the Earth. VLBI has now passed the pioneer stage and is becoming a standard facility available to astronomers and geodesists, requiring the coordination of the operations of indpendently owned radio telescopes around the world. In Europe observatories from England, Federal Republic of Germany, France, Italy, Poland, Sweden and The Netherlands are coordinated in their VLBI activity by the European VLBI Network Consortium (EVN). The Programme Committee of the EVN allocates time to scientific projects on a routine basis three times a year. The Unites States has a similar arrangement of a network of independent radio observatories, and joint experiments using 'Global Network' are often made.
An Intercontinental Very Long Baseline Array
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1977
An Intercontinental Very Long Baseline Array written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Interferometers categories.
Very Long Baseline Interferometry And The Vlba
DOWNLOAD
Author : J. Anton Zensus
language : en
Publisher:
Release Date : 1995
Very Long Baseline Interferometry And The Vlba written by J. Anton Zensus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Nature categories.
European Very Long Baseline Interferometry Vlbi Network
DOWNLOAD
Author :
language : en
Publisher:
Release Date :
European Very Long Baseline Interferometry Vlbi Network written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
The European Very Long Baseline Interferometry (VLBI) Network is a collaboration of the major radio astronomical institutes in Europe and Asia. The network consists of an interferometric array of radio telescopes that perform high angular resolution observations of cosmic radio sources.
Very Long Baseline Interferometry Of Evolved Binary Systems
DOWNLOAD
Author : William M. Peterson
language : en
Publisher:
Release Date : 2011
Very Long Baseline Interferometry Of Evolved Binary Systems written by William M. Peterson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Double stars categories.
Our understanding of the magnetic fields of stars is nearly monopolized by knowledge of our own sun. Very-long baseline radio interferometry (VLBI) provides a means of directly imaging the radio coronae of other stars at a high enough resolution to discern discrete features, something not possible with other observational methods. It also allows the highest positional accuracy of any observational method available. This thesis details the VLBI study of two nearby radio-loud stars in close binary systems. Both systems were observed at numerous epochs spaced over a range of several months with the global-scale radio interferometer array the VLBA-HSA. These observations were combined with archival data from the National Radioastronomy Observatory (NRAO) Archive. The resulting positions, as well as previously published positions, were used to calculate a least-squares solution for all the orbital and astrometric parameters of both systems. This made it possible to determine the position of the physical star with respect to the radio emission in each image. The images of both stars were found to conform to theoretical emission produced by a model dipolar magnetosphere with a filled or partially-filled coronal loop.
Interferometry And Synthesis In Radio Astronomy
DOWNLOAD
Author : A. Richard Thompson
language : en
Publisher: Springer
Release Date : 2017-02-22
Interferometry And Synthesis In Radio Astronomy written by A. Richard Thompson and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-22 with Science categories.
This book is open access under a CC BY-NC 4.0 license. The third edition of this indispensable book in radio interferometry provides extensive updates to the second edition, including results and technical advances from the past decade; discussion of arrays that now span the full range of the radio part of the electromagnetic spectrum observable from the ground, 10 MHz to 1 THz; an analysis of factors that affect array speed; and an expanded discussion of digital signal-processing techniques and of scintillation phenomena and the effects of atmospheric water vapor on image distortion, among many other topics. With its comprehensiveness and detailed exposition of all aspects of the theory and practice of radio interferometry and synthesis imaging, this book has established itself as a standard reference in the field. It begins with an overview of the basic principles of radio astronomy, a short history of the development of radio interferometry, and an elementary discussion of the operation of an interferometer. From this foundation, it delves into the underlying relationships of interferometry, sets forth the coordinate systems and parameters to describe synthesis imaging, and examines configurations of antennas for multielement synthesis arrays. Various aspects of the design and response of receiving systems are discussed, as well as the special requirements of very-long-baseline interferometry (VLBI), image reconstruction, and recent developments in image enhancement techniques and astrometric observations. Also discussed are propagation effects in the media between the source and the observer, and radio interference, factors that limit performance. Related techniques are introduced, including intensity interferometry, optical interferometry, lunar occultations, tracking of satellites in Earth orbit, interferometry for remote Earth sensing, and holographic measurements of antenna surfaces. This book will benefit anyone who is interested in radio interferometry techniques for astronomy, astrometry, geodesy, or electrical engineering.
Very Long Baseline Interferometry Applied To Polar Motion Relativity And Geodesy
DOWNLOAD
Author : Chopo Ma
language : en
Publisher:
Release Date : 1978
Very Long Baseline Interferometry Applied To Polar Motion Relativity And Geodesy written by Chopo Ma and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Base measuring categories.
Interferometry And Synthesis In Radio Astronomy
DOWNLOAD
Author : A. Richard Thompson
language : en
Publisher: John Wiley & Sons
Release Date : 2008-11-20
Interferometry And Synthesis In Radio Astronomy written by A. Richard Thompson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-20 with Science categories.
Comprehensive, authoritative coverage of interferometric techniques for radio astronomy In this Second Edition of Interferometry and Synthesis in Radio Astronomy, three leading figures in the development of large imaging arrays, including very-long-baseline interferometry (VLBI), describe and explain the technology that provides images of the universe with an angular resolution as fine as 1/20,000 of an arcsecond. This comprehensive volume begins with a historical review followed by detailed coverage of the theory of interferometry and synthesis imaging, analysis of interferometer response, geometrical relationships, polarimetry, antennas, and arrays. Discussion of the receiving system continues with analysis of the response to signals and noise, analog design requirements, and digital signal processing. The authors detail special requirements of VLBI including atomic frequency standards, broadband recording systems, and antennas in orbit. Further major topics include: * Calibration of data and synthesis of images * Image enhancement using nonlinear algorithms * Techniques for astrometry and geodesy * Propagation in the neutral atmosphere and ionized media * Radio interference * Related techniques: intensity interferometry, moon occultations, antenna holography, and optical interferometry Interferometry and Synthesis in Radio Astronomy, Second Edition is comprehensive in that it provides an excellent overview of most radio astronomical instrumentation and techniques.
Very Long Baseline Radio Interferometry Using A Geostationary Satellite
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1978
Very Long Baseline Radio Interferometry Using A Geostationary Satellite written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Base measuring categories.