Lunar Radio Interferometer
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Lunar Radio Interferometer
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Author : G. A. Gurzadyan
language : en
Publisher:
Release Date : 1959
Lunar Radio Interferometer written by G. A. Gurzadyan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with categories.
There is a type of radio interferometer, which takes advantage of the fact that the moon has a rarified atmosphere and, consequently, also a rarified ionosphere. Radio waves from a discrete source in the sky near the lunar disk may reach the observer on earth either in a straight line or in a slight curve through the ionosphere of the moon. As a result, these waves may interfere at the point of reception. Thus, the ionosphere of the moon, or simply the moon, assumes the function of the second antenna or of the surface of the ocean. Let us designate this interferometer for convenience the 'lunar' interferometer. As shall be shown the lunar interferometer has a high resolving power and, therefore, may be a very valuable means for the determination of the angular values of very small discrete sources of cosmic radio emission. The present communication gives the basic considerations of the study of a lunar interferometer and also a method of determining the angular values of discrete sources.
Interferometry And Synthesis In Radio Astronomy
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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.
Interferometry And Synthesis In Radio Astronomy
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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.
A Lunar Optical Ultraviolet Infrared Synthesis Array Louisa
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Author : Jack O. Burns
language : en
Publisher:
Release Date : 1992
A Lunar Optical Ultraviolet Infrared Synthesis Array Louisa written by Jack O. Burns and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Astronomical instruments categories.
Part 1 is an introduction. Part 2 is a description of current and planned ground-based interferometers. Part 3 is a description of potential space-based interferometers. Part 4 addresses the potential for interferometry on the moon. Part 5 is the report of the workshop's working groups. Concluding remarks, summary, and conclusions are presented in Part 6.
Radio Interferometry
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Author : T. J. Cornwell
language : en
Publisher:
Release Date : 1991
Radio Interferometry written by T. J. Cornwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Science categories.
A Lunar Far Side Very Low Frequency Array
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Author :
language : en
Publisher:
Release Date : 1989
A Lunar Far Side Very Low Frequency 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 1989 with Lunar bases categories.
Lunar Occultations Of Two Discrete Radio Sources In 1963 1964
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Author : John A. Eddy
language : en
Publisher:
Release Date : 1963
Lunar Occultations Of Two Discrete Radio Sources In 1963 1964 written by John A. Eddy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Moon categories.
Interferometry And Synthesis In Radio Astronomy
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Author : A. Richard Thompson
language : en
Publisher: Wiley-Interscience
Release Date : 1986-04-28
Interferometry And Synthesis In Radio Astronomy written by A. Richard Thompson and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-04-28 with Nature categories.
A unified description of the theory and practice of radio interferometry and synthesis mapping techniques as they apply to astronomy and geology. Beginning with an historical review, it goes on to provide a detailed description of all aspects of radio inferometry, from basic principles through instrumental design to data reduction. Over 450 original papers and monographs are cited.
Proceeding Of The First Lunar International Laboratory Lil Symposium Research In Geosciences And Astronomy
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Author : Frank J. Malina
language : de
Publisher: Springer-Verlag
Release Date : 2013-07-29
Proceeding Of The First Lunar International Laboratory Lil Symposium Research In Geosciences And Astronomy written by Frank J. Malina and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-29 with Science categories.
Interpretation Of Radio Interferometry Depth Sounding With Emphasis On Random Scattering From Temperate Glaciers And The Lunar Surface
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Author : James R. (James Randell) Rossiter
language : en
Publisher: 1977.
Release Date : 1977
Interpretation Of Radio Interferometry Depth Sounding With Emphasis On Random Scattering From Temperate Glaciers And The Lunar Surface written by James R. (James Randell) Rossiter and has been published by 1977. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Electromagnetic waves categories.