Interferometry at Low Frequencies
| Author | : Vinzenz Wand |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2007 |
| Genre | : |
| ISBN | : |
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Fundamentals Of Interferometric Gravitational Wave Detectors (Second Edition)
| Author | : Peter R Saulson |
| Publisher | : World Scientific |
| Total Pages | : 336 |
| Release | : 2017-02-16 |
| Genre | : Science |
| ISBN | : 9813146206 |
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'The content of the Saulson’s book remains valid and offers a versatile introduction to gravitational wave astronomy. The book is appropriate for undergraduate students and can be read by graduate students and researchers who want to be involved in either the theoretical or the experimental traits of the study of gravitational waves.'Contemporary PhysicsLIGO's recent discovery of gravitational waves was headline news around the world. Many people will want to understand more about what a gravitational wave is, how LIGO works, and how LIGO functions as a detector of gravitational waves.This book aims to communicate the basic logic of interferometric gravitational wave detectors to students who are new to the field. It assumes that the reader has a basic knowledge of physics, but no special familiarity with gravitational waves, with general relativity, or with the special techniques of experimental physics. All of the necessary ideas are developed in the book.The first edition was published in 1994. Since the book is aimed at explaining the physical ideas behind the design of LIGO, it stands the test of time. For the second edition, an Epilogue has been added; it brings the treatment of technical details up to date, and provides references that would allow a student to become proficient with today's designs.
Research Study of Fiber-Optic Interferometry at Very Low Frequencies
| Author | : R. B. Edwards |
| Publisher | : |
| Total Pages | : 101 |
| Release | : 1984 |
| Genre | : |
| ISBN | : |
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A comprehensive review of fiber-optic interferometry shows that frequency-dependent phenomena affecting fiber-optic interferometric electromagnetic sensors at very low frequencies have been neither adequately understood nor quantitatively described. In addition to the electro-optical and magneto-strictive (or electro-strictive) factors that intrinsically limit transduction, other interactive mechanisms such as skin-depth and mechanical loading are commonly supposed to affect the detection sensitivity of the interferometric sensor. This research study of fiber-optic interferometry consists of the following: a review of fiber-optic interferometry, analyses aimed at understanding the mechanisms and quantifying where possible, their effects, and an investigation of means to reduce their impact on the performance of practical sensor implementations. Additional experimental studies have been planned in an attempt to address these interactive mechanisms, their effects and methods of mitigating them. The experimental studies have been performed on a best efforts basis due to cost and schedule constraints. (Author).
Optical Interferometry, 2e
| Author | : P. Hariharan |
| Publisher | : Academic Press |
| Total Pages | : 369 |
| Release | : 2003-09-22 |
| Genre | : Science |
| ISBN | : 0123116309 |
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Nanotechnology, sensor and measurement industries depend on these advances in optical interferometry for accuracy and profitability.
Interferometry and Synthesis in Radio Astronomy
| Author | : A. Richard Thompson |
| Publisher | : John Wiley & Sons |
| Total Pages | : 715 |
| Release | : 2008-11-20 |
| Genre | : Science |
| ISBN | : 352761785X |
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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.
Advanced Interferometric Gravitational-wave Detectors (In 2 Volumes)
| Author | : Grote Hartmut |
| Publisher | : World Scientific |
| Total Pages | : 808 |
| Release | : 2019-03-25 |
| Genre | : Science |
| ISBN | : 9813146095 |
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The detection of gravitational waves in 2015 has been hailed a scientific breakthrough and one of the most significant scientific discoveries of the 21st century. Gravitational-wave physics and astronomy are emerging as a new frontier in understanding the universe.Advanced Interferometric Gravitational-Wave Detectors brings together many of the world's top experts to deliver an authoritative and in-depth treatment on current and future detectors. Volume I is devoted to the essentials of gravitational-wave detectors, presenting the physical principles behind large-scale precision interferometry, the physics of the underlying noise sources that limit interferometer sensitivity, and an explanation of the key enabling technologies that are used in the detectors. Volume II provides an in-depth look at the Advanced LIGO and Advanced Virgo interferometers, as well as examining future interferometric detector concepts. This two-volume set will provide students and researchers the comprehensive background needed to understand gravitational-wave detectors.
Very Long Baseline Interferometry
| Author | : Marcello Felli |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 470 |
| Release | : 1989-07-31 |
| Genre | : Science |
| ISBN | : 9780792303763 |
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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.
Optical Frequency-Modulated Continuous-Wave (FMCW) Interferometry
| Author | : Jesse Zheng |
| Publisher | : Springer |
| Total Pages | : 259 |
| Release | : 2005-08-25 |
| Genre | : Science |
| ISBN | : 0387237534 |
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Optical interference plays a prominent role in scientific discovery and modern technology. Historically, optical interference was instrumental in establishing the wave nature of light. Nowadays, optical interference continues to be of great importance in areas such as spectroscopy and metrology. Thus far, the physical optics literature has discussed the interference of optical waves with the same single frequency (i.e., homodyne interference) and the interference of optical waves with two different frequencies (i.e., heterodyne interference), but it hardly ever deals with the interference of optical waves whose frequencies are continuously modulated (i.e., frequency-modulated continuous-wave int- ference). Frequency-modulated continuous-wave (FMCW) interference, which was originally investigated in radar in the 1950s, has been recently introduced in optics. The study of optical FMCW interference not only updates our kno- edge about the nature of light but also creates a new advanced technology for precision measurements. This book introduces the principles, applications, and signal processing of optical FMCW interference. The layout of this book is straightforward. Chapter 1 gives a short introduction to optical FMCW interferometry by considering the historical development, general concepts, and major advantages provided by this new technology. Chapter 2 focuses on the principles of optical FMCW interference. Three different versions of optical FMCW interference— sawtooth-wave optical FMCW interference, triangular-wave optical FMCW interference, and sinusoidal-wave optical FMCW interference—are discussed in detail. Moreover, multiple-beam optical FMCW interference and multip- wavelength optical FMCW interference are also discussed by this chapter.
The Sagamore Hill Sweep Frequency Interferometric Radiometer Used for Solar Studies in the Dekametric Band
| Author | : D. N. Gaunt |
| Publisher | : |
| Total Pages | : 52 |
| Release | : 1976 |
| Genre | : Interferometers |
| ISBN | : |
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A sweep frequency interferometer covering the 25 to 75 MHz range at Sagamore Hill is described. The basic principles of sweep frequency interferometry are discussed. This report also describes the use and design of a Bicone antenna system, phase detector, and fringe width modulation technique-all developed at Sagamore Hill. The types of solar burst activity resolved with the system are reviewed. (Author).
Interferometry in Radioastronomy and Radar Techniques
| Author | : R. Wohlleben |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 222 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9401137021 |
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In recent years aperture synthesis and interferometry have become very powerful tools in radioastronomy. Investigation of distant galaxies, for example, have revealed structures with sizes of less than a kiloparsec. In general, the study of galaxies has benefited from the great power of these techniques. Radar applications have also dramatically increased their quality by using the interferometry principle. Tracking and airborne radar can now determine position and velocity of objects with a much higher accuracy. This book describes in the first six, short chapters the basics of interferometry and aperture synthesis. The following two, long chapters treat the aspects of radioastronomical interferometers and radar applications of interferometry in great detail. The text offers readers a very good opportunity to familiarize themselves with the mathematical background of these very complex techniques. For researchers and students in radioastronomy and electrical engineering.
