Correlations Between Levels For Stellar Scintillometer Derived Profiles Of C Sub N2

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Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2n

Author : Frank P. Battles
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2n by : Frank P. Battles

Download or read book Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2n written by Frank P. Battles and published by . This book was released on 1990 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A stellar scintillometer measures the variance of stellar intensity for a first magnitude or greater star. This variance can be converted, by the use of spatial filters, into a profile of (c sub n) -sq, the index of refraction structure constant, for 7 different altitudes or levels. The (c sub n) -sq values are not entirely instrument independent because there will be some overlap in the weighting functions used to separate the spatial frequencies. It is usually assumed that readings from levels 1, 4, and 7 are instrument independent. When linear correlation coefficients are calculated between levels for (c sub n) -sq and Log (c sub n) -sq of this data set, results obtained seem to contradict the above stated assumption. Much less correlation is observed when calculated on a nightly basis. In fact, some nightly coefficients are significantly negative, which could not be due to weighting function overlap. We have investigated other mechanisms which could lead to a high degree of correlation across the entire data set. During the measurement program, atmospheric conditions changed from evening to evening. For example, the jet stream passed through several times affecting the entire altitude range of the scintillometer. Correlation studies do not indicate that, except for low lying adjacent levels, (c sub n) -sq values obtained using the scintillometer are instrument dependent.

Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2[subscript]n

Author : Frank P. Battles
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (252 download)

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Book Synopsis Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2[subscript]n by : Frank P. Battles

Download or read book Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2[subscript]n written by Frank P. Battles and published by . This book was released on 1990 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Correlations Between Levels for Stellar-Scintillometer-Derived Profiles of C Sub N(2).

Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Correlations Between Levels for Stellar-Scintillometer-Derived Profiles of C Sub N(2). by :

Download or read book Correlations Between Levels for Stellar-Scintillometer-Derived Profiles of C Sub N(2). written by and published by . This book was released on 1990 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A stellar scintillometer measures the variance of stellar intensity for a first magnitude or greater star. This variance can be converted, by the use of spatial filters, into a profile of (c sub n) -sq, the index of refraction structure constant, for 7 different altitudes or levels. The (c sub n) -sq values are not entirely instrument independent because there will be some overlap in the weighting functions used to separate the spatial frequencies. It is usually assumed that readings from levels 1, 4, and 7 are instrument independent. When linear correlation coefficients are calculated between levels for (c sub n) -sq and Log (c sub n) -sq of this data set, results obtained seem to contradict the above stated assumption. Much less correlation is observed when calculated on a nightly basis. In fact, some nightly coefficients are significantly negative, which could not be due to weighting function overlap. We have investigated other mechanisms which could lead to a high degree of correlation across the entire data set. During the measurement program, atmospheric conditions changed from evening to evening. For example, the jet stream passed through several times affecting the entire altitude range of the scintillometer. Correlation studies do not indicate that, except for low lying adjacent levels, (c sub n) -sq values obtained using the scintillometer are instrument dependent.

Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2n

Author : Frank P. Battles
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Correlations Between Levels for Stellar-scintillometer-derived Profiles of C2n by : Frank P. Battles

The Infrared Handbook

Author : Environmental Research Institute of Michigan. Infrared Information and Analysis Center
Publisher :
ISBN 13 :
Total Pages : 1740 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis The Infrared Handbook by : Environmental Research Institute of Michigan. Infrared Information and Analysis Center

Download or read book The Infrared Handbook written by Environmental Research Institute of Michigan. Infrared Information and Analysis Center and published by . This book was released on 1978 with total page 1740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Free-Space Laser Communications

Author : Arun K. Majumdar
Publisher : Springer Science & Business Media
ISBN 13 : 0387286772
Total Pages : 429 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Free-Space Laser Communications by : Arun K. Majumdar

Download or read book Free-Space Laser Communications written by Arun K. Majumdar and published by Springer Science & Business Media. This book was released on 2010-05-05 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive tutorial on the emerging technology of free-space laser communications (FSLC). The book offers an all-inclusive source of information on the basics of FSLC, and a review of state-of-the-art technologies. Coverage includes atmospheric effects for laser propagation and FSLC systems performance and design. Free-Space Laser Communications is a valuable resource for engineers, scientists and students interested in laser communication systems designed for the atmospheric optical channel.

Clear Air Turbulence and Its Detection

Author : Yih-Ho Pao
Publisher : Springer
ISBN 13 : 1489956158
Total Pages : 545 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Clear Air Turbulence and Its Detection by : Yih-Ho Pao

Download or read book Clear Air Turbulence and Its Detection written by Yih-Ho Pao and published by Springer. This book was released on 2013-12-11 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Generalized Wall Function

Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)

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Download or read book A Generalized Wall Function written by and published by . This book was released on 1999 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Opto-Mechanical Systems Design, Volume 2

Author : Paul Yoder
Publisher : CRC Press
ISBN 13 : 1351830945
Total Pages : 538 pages
Book Rating : 4.3/5 (518 download)

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Book Synopsis Opto-Mechanical Systems Design, Volume 2 by : Paul Yoder

Download or read book Opto-Mechanical Systems Design, Volume 2 written by Paul Yoder and published by CRC Press. This book was released on 2017-12-19 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opto-Mechanical Systems Design, Fourth Edition is different in many ways from its three earlier editions: coauthor Daniel Vukobratovich has brought his broad expertise in materials, opto-mechanical design, analysis of optical instruments, large mirrors, and structures to bear throughout the book; Jan Nijenhuis has contributed a comprehensive new chapter on kinematics and applications of flexures; and several other experts in special aspects of opto-mechanics have contributed portions of other chapters. An expanded feature—a total of 110 worked-out design examples—has been added to several chapters to show how the theory, equations, and analytical methods can be applied by the reader. Finally, the extended text, new illustrations, new tables of data, and new references have warranted publication of this work in the form of two separate but closely entwined volumes. This second volume, Design and Analysis of Large Mirrors and Structures, concentrates on the design and mounting of significantly larger optics and their structures, including a new and important topic: detailed consideration of factors affecting large mirror performance. The book details how to design and fabricate very large single-substrate, segmented, and lightweight mirrors; describes mountings for large mirrors with their optical axes in vertical, horizontal, and variable orientations; indicates how metal and composite mirrors differ from ones made of glass; explains key design aspects of optical instrument structural design; and takes a look at an emerging technology—the evolution and applications of silicon and silicon carbide in mirrors and other types of components for optical applications.

MILCOM 2005

Author : Institute of Electrical and Electronics Engineers
Publisher :
ISBN 13 :
Total Pages : 674 pages
Book Rating : 4.:/5 (836 download)

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Book Synopsis MILCOM 2005 by : Institute of Electrical and Electronics Engineers

Download or read book MILCOM 2005 written by Institute of Electrical and Electronics Engineers and published by . This book was released on 2005 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Clinical Diagnostic Technology

Author : Kory M. Ward
Publisher : Amer. Assoc. for Clinical Chemistry
ISBN 13 : 9781890883898
Total Pages : 206 pages
Book Rating : 4.8/5 (838 download)

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Book Synopsis Clinical Diagnostic Technology by : Kory M. Ward

Download or read book Clinical Diagnostic Technology written by Kory M. Ward and published by Amer. Assoc. for Clinical Chemistry. This book was released on 2003 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Turbulence in the Free Atmosphere

Author : N. Vinnichenko
Publisher : Springer Science & Business Media
ISBN 13 : 1475701004
Total Pages : 318 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Turbulence in the Free Atmosphere by : N. Vinnichenko

Download or read book Turbulence in the Free Atmosphere written by N. Vinnichenko and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence-the randomly disordered movement of volumes of air of widely varying size-is one of the characteristic features of atmospheric air flows; its investigation is essential for the solution of several theoretical and practical problems. Until recently, owing to experimental difficulties, research on turbu lence was confmed mainly to the lower half of the troposphere. Theoretical investigations have consequently been based on these data. The rapid development of high-altitude aviation and cases of aircraft encoun tering hazardous turbulence led to a sharp intensification of research on turbu lence in the atmosphere up to 10-12 km, and subsequently at greater altitudes. Such research was confined initially to the characterization of the frequency of occurrence of gusts of different speeds, their relation to altitude, geographical conditions, time of day and year, and so on. At the end of the fifties, when the required measuring equipment and experimental techniques had been developed, it became possible to investigate the complete statistical characteristics of turbu lence: the spectral densities of the velocity fluctuations of air flows, structure functions, etc. These data stimulated the further development of theory related to the specific conditions of the free atmosphere.

Global Geodetic Observing System

Author : Hans-Peter Plag
Publisher : Springer Science & Business Media
ISBN 13 : 3642026877
Total Pages : 367 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Global Geodetic Observing System by : Hans-Peter Plag

Download or read book Global Geodetic Observing System written by Hans-Peter Plag and published by Springer Science & Business Media. This book was released on 2009-07-25 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Geodetic Observing System (GGOS) has been established by the Int- national Association of Geodesy (IAG) in order to integrate the three fundamental areas of geodesy, so as to monitor geodetic parameters and their temporal varia- ?9 tions, in a global reference frame with a target relative accuracy of 10 or b- ter. These areas, often called ‘pillars’, deal with the determination and evolution of (a) the Earth’s geometry (topography, bathymetry, ice surface, sea level), (b) the Earth’s rotation and orientation (polar motion, rotation rate, nutation, etc. ), and (c) the Earth’s gravity eld (gravity, geoid). Therefore, Earth Observation on a global scale is at the heart of GGOS’s activities, which contributes to Global Change - search through the monitoring, as well as the modeling, of dynamic Earth processes such as, for example, mass and angular momentum exchanges, mass transport and ocean circulation, and changes in sea, land and ice surfaces. To achieve such an - bitious goal, GGOS relies on an integrated network of current and future terrestrial, airborne and satellite systems and technologies. These include: various positioning, navigation, remote sensing and dedicated gravity and altimetry satellite missions; global ground networks of VLBI, SLR, DORIS, GNSS and absolute and relative gravity stations; and airborne gravity, mapping and remote sensing systems.

Living Along Gradients: Past, Present, Future

Author : Ulrich Bathmann
Publisher : Frontiers Media SA
ISBN 13 : 288963468X
Total Pages : 462 pages
Book Rating : 4.8/5 (896 download)

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Download or read book Living Along Gradients: Past, Present, Future written by Ulrich Bathmann and published by Frontiers Media SA. This book was released on 2020-02-24 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Turbulence Problem

Author : Michael Eckert
Publisher : Springer Nature
ISBN 13 : 303031863X
Total Pages : 115 pages
Book Rating : 4.0/5 (33 download)

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Download or read book The Turbulence Problem written by Michael Eckert and published by Springer Nature. This book was released on 2019-10-05 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the road toward a history of turbulence, this book focuses on what the actors in this research field have identified as the “turbulence problem”. Turbulent flow rose to prominence as one of the most persistent challenges in science. At different times and in different social and disciplinary settings, the nature of this problem has changed in response to changing research agendas. This book does not seek to provide a comprehensive account, but instead an exemplary exposition on the environments in which problems become the subjects of research agendas, with particular emphasis on the first half of the 20th century.

Atmosphere – Cryosphere Interaction in the Arctic, at High Latitudes and Mountains with Focus on Transport, Deposition and Effects of Dust, Black Carbon, and other Aerosols

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Author : Pavla Dagsson-Waldhauserova
Publisher : Frontiers Media SA
ISBN 13 : 288963504X
Total Pages : 150 pages
Book Rating : 4.8/5 (896 download)

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Download or read book Atmosphere – Cryosphere Interaction in the Arctic, at High Latitudes and Mountains with Focus on Transport, Deposition and Effects of Dust, Black Carbon, and other Aerosols written by Pavla Dagsson-Waldhauserova and published by Frontiers Media SA. This book was released on 2020-02-11 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evo-SETI

Author : Claudio Maccone
Publisher : Springer
ISBN 13 : 9783030519308
Total Pages : 848 pages
Book Rating : 4.5/5 (193 download)

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Download or read book Evo-SETI written by Claudio Maccone and published by Springer. This book was released on 2021-02-13 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a vision of how evolutionary life processes can be modelled. It presents a mathematical description that can be used not only for the full evolution of life on Earth from RNA to modern human societies, but also the possible evolution of life on exoplanets, thus leading to SETI, the current Search for ExtraTerrestrial Intelligence. The main premise underlying this mathematical theory is that the Geometric Brownian Motion (GBM) can be applied as a key stochastic process to model the evolution of life. In the resulting Evo-SETI Theory, the life of any living thing (a cell, an animal, a human, a civilization of humans, or even an ET civilization) is represented by a b-lognormal, i.e., a lognormal probability density function starting at a precise instant (b, birth) then increasing up to a peak time, then decreasing to senility time and then continuing as a straight line down to the time of death. Using this theory, Claudio Maccone arrives at remarkable hypotheses on the development of life and civilizations, the possibility of extraterrestrial life, and when computers will take over the reins from us humans (Singularity). The book develops the mathematical Evo-SETI Theory by integrating a set of articles that the author has published in various journals on Astrobiology and Astronautical Research.