Rotation Sensing With Large Ring Lasers
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Rotation Sensing With Large Ring Lasers
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Author : Ulrich Schreiber
language : en
Publisher: Cambridge University Press
Release Date : 2023-02-09
Rotation Sensing With Large Ring Lasers written by Ulrich Schreiber and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-09 with Science categories.
An overview of ring lasers for high-resolution inertial rotation sensing of the Earth and applications in geophysics and geodesy.
Ring Laser Techniques For Angular Rotation Sensing
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Author : D. A. Guidice
language : en
Publisher:
Release Date : 1963
Ring Laser Techniques For Angular Rotation Sensing written by D. A. Guidice and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Laser beams categories.
The concept of using a ''ring'' laser to measure angular rotation is presented. The optical frequencies of the clockwise and the counterclockwise beams traveling around the perimeter of the square ''ring'' depend on their respective optical path lengths which are equal in the absence of rotation. However, angular rotation alters the path lengths, resulting in different frequencies for the two traveling waves. The two waves are optically heterodyned in a photodetector and the resultant beat frequency is directly proportional to the rotation rate of the ''ring.'' An experiment verifying the existence of this phenomenon using a gas laser in the square ''ring'' configuration is described. The physics of mode pulling and various ways to minimize or bypass this problem are discussed in detail. Techniques for artificially separating the frequencies of the two waves by introduction of nonreciprocal elements into the optical path are described. Accuracy limitations caused by mechanical instabilities, excitation variations and inherent stimulated emission line width are examined.
Earthquake Source Asymmetry Structural Media And Rotation Effects
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Author : Roman Teisseyre
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-07-01
Earthquake Source Asymmetry Structural Media And Rotation Effects written by Roman Teisseyre 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 2006-07-01 with Science categories.
This breakthrough book is the first to examine the rotational effects in earthquakes, a revolutionary concept in seismology. Existing models do no yet explain the significant rotational and twisting motions that occur during an earthquake and cause the failure of structures. The rotation and twist effects are investigated and described, and their consequences for designing tall buildings and other important structures are presented. This book will change the way the world views earthquakes.
Optoelectronic Gyroscopes
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Author : Kamal Nain Chopra
language : en
Publisher: Springer Nature
Release Date : 2020-09-19
Optoelectronic Gyroscopes written by Kamal Nain Chopra and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-19 with Technology & Engineering categories.
The book presents the detailed study of optoelectronic gyroscopes, especially Ring Laser Gyroscopes (RLGs) and Fiber Optic Gyroscopes (FOGs). It discusses their design in detail to optimize their performance, besides explaining the related concepts and the new developments. Other topics covered in this book are double ion beam sputtering for fabricating RLG mirrors on the high quality optical substrates, optical testing, and thin films characterization techniques. The book will be useful for the researchers, professionals, and engineers working in the areas of optical gyroscopes and the related technologies.
Oscillations Waves And Interactions
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Author : Thomas Kurz
language : en
Publisher: Universitätsverlag Göttingen
Release Date : 2007
Oscillations Waves And Interactions written by Thomas Kurz and has been published by Universitätsverlag Göttingen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Everything About Gravity Proceedings Of The Second Lecospa International Symposium
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Author : Pisin Chen
language : en
Publisher: World Scientific
Release Date : 2016-12-29
Everything About Gravity Proceedings Of The Second Lecospa International Symposium written by Pisin Chen and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-29 with Science categories.
The proceedings of the 2nd LeCosPA International Symposium, 'Everything about Gravity', collects 78 papers contributed by the symposium's Plenary Session and Parallel Session speakers. Organizers of the Parallel Sessions have in addition prepared summaries for their own sessions. The topics range from quasi-local energy in GR in the presence of gravitational radiations, a gauge theory perspective of gravity, naked black hole firewalls related to the black hole information loss paradox, a new theory of spacetime quantization, relations between the Schwinger effect and the Hawking radiation and Unruh effect, conformal frames in cosmology, surprises in nonrelativistic naturalness, inflation and tensor fluctuations, emergent spacetime for quantum gravity, understanding strongly coupled magnetism through holographic principle, the detections of dark matter, ultra-high energy cosmic neutrinos and cosmic rays, etc. Last but not least, the closing remark delivered by John Ellis raised the following question: Does cosmological inflation require a modification of Einstein's gravity?After 100 years of remarkable success of Einstein's general relativity, the development of a successful quantum theory of gravity has become a major goal in physics in the 21st century. This volume serves as a valuable reference for scientists who are interested in frontier research topics of gravity.
Geodesy
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Author : Wolfgang Torge
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2023-04-27
Geodesy written by Wolfgang Torge and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-27 with Technology & Engineering categories.
The fifth edition of this textbook has been completely revised and significantly extended in order to reflect the revolution of geodetic technologies, methods and applications during the last decade. The Global Geodetic Observing System established by the IAG utilizes a variety of techniques to determine the geometric shape of the earth and its kinematics, the variations of earth rotation, and the earth’s gravity field. The societal importance of geodetic products was highlighted by the UN resolution on the Global Geodetic Reference Frame. In this context, both space and terrestrial techniques play a fundamental role. Recent space missions are monitoring climate-relevant processes such as mass transport in the Earth system and sea level changes. The analysis of the time variation of the geodetic products provides the link to neighboring geosciences and contributes to proper modelling of geodynamic processes. New satellite mission concepts and novel technologies such as quantum gravimetry and optical clocks show great potential to further improve the geodetic observing system in the future. The book especially addresses graduate students in the fields of geodesy, geophysics, surveying engineering, geomatics, and space navigation. It should also serve as a reference for geoscientists and engineers facing geodetic problems in their professional work. The book follows the principal directions of geodesy, providing the theoretical background as well as the principles of measurement and evaluation methods, which is enriched with numerous figures. An extensive reference list supports further studies.
The Fiber Optic Gyroscope Third Edition
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Author : Herve C. Lefevre
language : en
Publisher: Artech House
Release Date : 2022-01-31
The Fiber Optic Gyroscope Third Edition written by Herve C. Lefevre and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-31 with Technology & Engineering categories.
This landmark work – considered by many in the field to be THE reference on fiber-optic gyroscopes (FOGs) – provides you with a complete and thorough system analysis of the FOG and remains unmatched by any other single source. Now in its third edition, this fully updated and authoritative book: Gives you access to all the details you need to know about optics, single-mode fiber optics, and integrated optics to fully grasp the design rules of the fiber-optic gyroscope Helps you understand the concepts that have emerged as the preferred solutions to obtain a practical device Guides you through the advances that have occurred in the last seven years since the previous edition was published and how they are implemented in the current FOGs Drawing on 45 years of research and development, The Fiber-Optic Gyroscope, Third Edition, features new content on the relationship between white-noise power spectral density and random walk; Allan variance; testing with optical coherence domain polarimetry; a new simple mechanical model of the thermally induced stresses and related strains in the sensing coil; simple viewing of the reduction of the Shupe effect with symmetrical windings; and comments about dispersion and birefringence dispersion. The book contains over 350 illustrations (including 70 new figures) and many helpful appendixes, and gives you everything you need to understand the fiber gyro. The author is a leading expert in this field and is one of the early pioneers of the practical optical architecture and signal processing technique that is universally used in today’s FOGs. This is a must-have reference for anyone working with FOGs, from students and academics learning about the device, to optoelectronics engineers and professionals needing to stay abreast of the current concepts and recent advances.
Fiber Optic Sensors
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Author : Eric Udd
language : en
Publisher: John Wiley & Sons
Release Date : 2011-10-11
Fiber Optic Sensors written by Eric Udd 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 2011-10-11 with Science categories.
Since the technology has moved strongly into a number of different areas a textbook of this sort could be used by a wide variety of academic departments including physics, electrical engineering, mechanical engineering, civil engineering, aerospace engineering and bioengineering. To make the second edition as widely appealing as possible a series of significant upgrades were made. 1. The book is structured to support a variety of academic programs and it can also be used as a general reference by practicing engineers and scientists. 2. The introductory chapter has been revised to outline the new content of the second edition and provide a overview of the current status of fiber optic sensor technology. 3. A new, extensive chapter has been added covering fiber optic grating sensor technology and its application to aerospace, civil structures, oil and gas and power generating applications. 4. A second new chapter has been added on the emerging field of biomedical fiber optic sensors. This is one of the most rapidly growing fields of use for fiber optic sensors and with rising health costs and medical advances promises to be an important area for many years to come.
Observation Of The Earth System From Space
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Author : Jakob Flury
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-02-28
Observation Of The Earth System From Space written by Jakob Flury 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 2006-02-28 with Technology & Engineering categories.
In the recent years, space-based observation methods have led to a subst- tially improved understanding of Earth system. Geodesy and geophysics are contributing to this development by measuring the temporal and spatial va- ations of the Earth’s shape, gravity ?eld, and magnetic ?eld, as well as at- sphere density. In the frame of the GermanR&D programmeGEOTECHNO- LOGIEN,researchprojectshavebeen launchedin2002relatedto the satellite missions CHAMP, GRACE and ESA’s planned mission GOCE, to comp- mentary terrestrial and airborne sensor systems and to consistent and stable high-precision global reference systems for satellite and other techniques. In the initial 3-year phase of the research programme (2002-2004), new gravity ?eld models have been computed from CHAMP and GRACE data which outperform previous models in accuracy by up to two orders of m- nitude for the long and medium wavelengths. A special highlight is the - termination of seasonal gravity variations caused by changes in continental water masses. For GOCE, to be launched in 2006, new gravity ?eld analysis methods are under development and integrated into the ESA processing s- tem. 200,000 GPS radio occultation pro?les, observed by CHAMP, have been processed on an operational basis. They represent new and excellent inf- mation on atmospheric refractivity, temperature and water vapor. These new developments require geodetic space techniques (such as VLBI, SLR, LLR, GPS) to be combined and synchronized as if being one global instrument.