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Modeling Fluctuations In Scattered Waves

Author: E. Jakeman
Publisher: CRC Press
ISBN: 1420012169
Size: 73.86 MB
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Fluctuations in scattered waves limit the performance of imaging and remote sensing systems that operate on all wavelengths of the electromagnetic spectrum. To better understand these fluctuations, Modeling Fluctuations in Scattered Waves provides a practical guide to the phenomenology, mathematics, and simulation of non-Gaussian noise models and discusses how they can be used to characterize the statistics of scattered waves. Through their discussion of mathematical models, the authors demonstrate the development of new sensing techniques as well as offer intelligent choices that can be made for system analysis. Using experimental results and numerical simulation, the book illustrates the properties and applications of these models. The first two chapters introduce statistical tools and the properties of Gaussian noise, including results on phase statistics. The following chapters describe Gaussian processes and the random walk model, address multiple scattering effects and propagation through an extended medium, and explore scattering vector waves and polarization fluctuations. Finally, the authors examine the generation of random processes and the simulation of wave propagation. Although scattered wave fluctuations are sources of information, they can hinder the performance of imaging and remote sensing systems. By providing experimental data and numerical models, this volume aids you in evaluating and improving upon the performance of your own systems.

Electromagnetic Scattering From Random Media

Author: Timothy R. Field
Publisher: Oxford University Press
ISBN: 0198570775
Size: 47.65 MB
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The book represents a conceptual shift away from current thinking in the theory of scattered waves, such that the fluctuations or physical noise inherent in the signals play the primary role in detection and classification. It is intended to radically change the approach to statistical processing of signals that are electromagnetic or wavelike in character.

Atmospheric Modelling And Millimetre Wave Propagation

Author: G. Brussaard
Publisher: Springer Science & Business Media
ISBN: 9780412562303
Size: 68.90 MB
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This book outlines the fundamental physics of radiowave interaction in the earth's atmosphere at microwave and millimetre wavelengths and describes the latest techniques for predicting the performance of radio systems operating in these bands.

Advances In Geophysics

Author: Haruo Sato
Publisher: Academic Press
ISBN: 9780080880334
Size: 60.35 MB
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Seismic waves generated by earthquakes have been interpreted to provide us information about the Earth’s structure across a variety of scales. For short periods of less than 1 second, the envelope of seismograms changes significantly with increased travel distance and coda waves are excited by scattering due to randomly distributed heterogeneities in the Earth. Deterministic structures such as horizontally uniform velocity layer models in traditional seismology cannot explain these phenomena. This book focuses on the Earth heterogeneity and scattering effects on seismic waves. Topics covered are recent developments in wave theory and observation including: coda wave analysis for mapping medium heterogeneity and monitoring temporal variation of physical properties, radiation of short-period seismic waves from an earthquake fault, weak localization of seismic waves, attenuation of seismic waves in randomly porous media, synthesis of seismic wave envelopes in short periods, and laboratory investigations of ultrasonic wave propagation in rock samples. Understanding new methods for the analysis of short-period seismic waves to characterize the random heterogeneity of the Earth on many scales Observations of seismic wave scattering Discussion of techniques for mapping medium heterogeneity and for monitoring temporal change in medium characteristics Up-to-date techniques for the synthesis of wave envelopes in random media

Modern Analysis Of Scattering Phenomena

Author: D. Maystre
Publisher: CRC Press
ISBN: 9780750301565
Size: 42.50 MB
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Modern Analysis of Scattering Phenomena discusses the developments in the theory of multiple scattering and related experimental work. It covers multiple scattering phenomena and scattering in random media that underlie research in fields as diverse as condensed matter physics, atmospheric optics, ocean acoustics, radio physics, astronomy, chemistry, nonlinear media, seismology, and plasma physics. This volume will be of interest to all those working in scattering from optical- to micro-wavelength surfaces.

Seismic Wave Propagation And Scattering In The Heterogeneous Earth Second Edition

Author: Haruo Sato
Publisher: Springer Science & Business Media
ISBN: 3642230288
Size: 17.69 MB
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Seismic waves - generated both by natural earthquakes and by man-made sources - have produced an enormous amount of information about the Earth's interior. In classical seismology, the Earth is modeled as a sequence of uniform horizontal layers (or spherical shells) having different elastic properties and one determines these properties from travel times and dispersion of seismic waves. The Earth, however, is not made of horizontally uniform layers, and classic seismic methods can take large-scale inhomogeneities into account. Smaller-scale irregularities, on the other hand, require other methods. Observations of continuous wave trains that follow classic direct S waves, known as coda waves, have shown that there are heterogeneities of random size scattered randomly throughout the layers of the classic seismic model. This book focuses on recent developments in the area of seismic wave propagation and scattering through the randomly heterogeneous structure of the Earth, with emphasis on the lithosphere. The presentation combines information from many sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials and includes analyses of observations using the theoretical methods developed. The second edition especially includes new observational facts such as the spatial variation of medium inhomogeneities and the temporal change in scattering characteristics and recent theoretical developments in the envelope synthesis in random media for the last ten years. Mathematics is thoroughly rewritten for improving the readability. Written for advanced undergraduates or beginning graduate students of geophysics or planetary sciences, this book should also be of interest to civil engineers, seismologists, acoustical engineers, and others interested in wave propagation through inhomogeneous elastic media.

Cosmic Rays And Earth

Author: J.W. Bieber
Publisher: Springer Science & Business Media
ISBN: 9780792367123
Size: 62.77 MB
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This book summarizes the results from the detection of cosmic rays at the surface and in the lower atmosphere of Earth during the fifty years since the invention of the neutron monitor by John A. Simpson in 1948. The properties of solar and galactic cosmic rays in the heliosphere, such as Forbush decreases, modulations by solar and heliosphere parameters, the physical processes that govern them, and their connection to Space Weather, are reviewed. This interdisciplinary compilation provides links between cosmic ray physics, geophysics, terrestrial climate, and human activity and health.

High Frequency Seafloor Acoustics

Author: Darrell Jackson
Publisher: Springer Science & Business Media
ISBN: 0387369457
Size: 50.10 MB
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This book is a research monograph on high-Frequency Seafloor Acoustics. It is the first book in a new series sponsored by the Office of Naval Research on the latest research in underwater acoustics. It provides a critical evaluation of the data and models pertaining to high-frequency acoustic interaction with the seafloor, which will be of interest to researchers in underwater acoustics and to developers of sonars. Models and data are presented so as to be readily usable, backed up by extensive explanation. Much of the data is new, and the discussion in on two levels: concise descriptions in the main text backed up by extensive technical appendices.

Modeling The Earth For Oil Exploration

Author: Klaus Helbig
Publisher: Elsevier
ISBN: 1483287939
Size: 43.97 MB
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This volume presents an overview of the results of a European Union integrated program in which approximately two hundred earth scientists participated, drawn from all fields related to exploration. Two classes of modeling were addressed - geological modeling - the relationship between the conditions of sedimentation and the resulting reservoir conditions; and wave-propagation modeling - the investigation of wave-propagation through media of various degrees of complexity. Wave-propagation modeling was carried out either mathematically or physically with the most modern tools. An important aspect of the project was the inversion of seismic data, that is the determination of the parameters of the medium from observations. This problem is closely related to modeling since it is based on the inversion of the mathematical steps and often uses modeling for verification and updating. The geological data presents novel concepts with a coverage that is both broad in area and in discipline. The geophysical investigations are at the leading edge of current research. Although detailed results have been published separately by investigators, this volume is the only source of reference which summarises the results; but incorporating sufficient detail to enable the reader to follow the scientific reasoning.

Wave Propagation And Scattering In Random Media

Author: Akira Ishimaru
Publisher: John Wiley & Sons
ISBN: 9780780347175
Size: 19.77 MB
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Electrical Engineering Wave Propagation and Scattering in Random Media A volume in the IEEE/OUP Series on Electromagnetic Wave TheoryDonald G. Dudley, Series Editor This IEEE Classic Reissue presentsa unified introduction to the fundamental theories and applicationsof wave propagation and scattering in random media. Now for thefirst time, the two volumes of Wave Propagation and Scattering inRandom Media previously published by Academic Press in 1978 arecombined into one comprehensive volume. This book presents a clearpicture of how waves interact with the atmosphere, terrain, ocean,turbulence, aerosols, rain, snow, biological tissues, compositematerial, and other media. The theories presented will enable youto solve a variety of problems relating to clutter, interference,imaging, object detection, and communication theory for variousmedia. This book is expressly designed for engineers and scientistswho have an interest in optical, microwave, or acoustic wavepropagation and scattering. Topics covered include: Wave characteristics in aerosols and hydrometeors Optical and acoustic scattering in sea water Scattering from biological materials Pulse scattering and beam wave propagation in such media Optical diffusion in tissues and blood Transport and radiative transfer theory Kubelka—Munk flux theory and plane-parallel problem Multiple scattering theory Wave fluctuations in turbulence Strong fluctuation theory Rough surface scattering Remote sensing and inversion techniques Imaging through various media About the IEEE/OUP Series on Electromagnetic Wave TheoryFormerly the IEEE Press Series on Electromagnetic Waves,this joint series between IEEE Press and Oxford University Pressoffers outstanding coverage of the field with new titles as well asreprintings and revisions of recognized classics that maintainlong-term archival significance in electromagnetic waves andapplications. Designed specifically for graduate students,practicing engineers, and researchers, this series providesaffordable volumes that explore electromagnetic waves andapplications beyond the undergraduate level. See page il of thefront matter for a listing of books in this series.