Sound Propagation Considerations For A Deep Ocean Acoustic Network
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Author | : |
Publisher | : |
Total Pages | : 64 |
Release | : 2009 |
Genre | : Detectors |
ISBN | : |
The deep ocean is characterized by sound propagation that can support wide-area surveillance throught the use of distributed acoustic sensors near the seabed. Such a deep-water sensor network is potentially enabled by phenomena such as Reliable Acoustic Path (RAP) and Deep Sound Channel (DSC) through which undersea network nodes can transmit and receive data across long distances. To provde a theoretical understanding of system effectiveness, the Bellhop acoustic modeling program is used to predict sensor coverage and communications range.
Author | : Robert J. Urick |
Publisher | : |
Total Pages | : 268 |
Release | : 1979 |
Genre | : Sound |
ISBN | : |
Author | : L.M. Brekhovskikh |
Publisher | : Springer Science & Business Media |
Total Pages | : 289 |
Release | : 2006-04-10 |
Genre | : Science |
ISBN | : 0387216553 |
This book provides an up-to-date introduction to the theory of sound propagation in the ocean. The text treats both ray and wave propagation and pays considerable attention to stochastic problems such as the scattering of sound at rough surfaces and random inhomogeneities. An introductory chapter that discusses the basic experimental data complements the following theoretical chapters. New material has been added throughout for this third edition. New topics covered include: - inter-thermocline lenses and their effect on sound fields - weakly divergent bundles of rays - ocean acoustic tomography - coupled modes - sound scattering by anisotropic volume inhomogeneities with fractal spectra - Voronovich's approach to sound scattering from the rough sea surface. In addition, the list of references has been brought up to date and the latest experimental data have been included.
Author | : John A. Colosi |
Publisher | : Cambridge University Press |
Total Pages | : 443 |
Release | : 2016-06-20 |
Genre | : Mathematics |
ISBN | : 1107072344 |
In this book, key discoveries in the field of statistical ocean acoustics over the last 35 years are addressed with illustrations from ocean observations.
Author | : Anuj Sehgal |
Publisher | : Lulu.com |
Total Pages | : 114 |
Release | : 2013-11-22 |
Genre | : Technology & Engineering |
ISBN | : 1304647927 |
[Color Edition]In order to examine the practices used by underwater sensor networks for successful off-shore deep sea deployments this book analyzes the underwater channel acoustic propagation model and also looks briefly at the characteristics of the underwater transducers along with the unique effect that they pose upon sonar based communication systems. The book then goes on to exploring the state of the art in underwater sensor network design paradigms followed by an analysis of areas that warrant research. A discussion on simulating such networks and an analysis of the characteristics of the underwater acoustic channel is also carried out.
Author | : Orlando Camargo RodrÃguez |
Publisher | : Springer Nature |
Total Pages | : 225 |
Release | : 2023-07-10 |
Genre | : Science |
ISBN | : 3031313194 |
This textbook on Underwater Acoustics has a structure that is more organic than logical. It thereby unifies diverse areas of research, including topics of signal processing, the sonar equation, sources and receivers, scattering and reverberation, wave propagation, propagation models, and inverse problems. It also provides code fragments written in Python which complement the discussion. This is a book written for both beginners and specialists, as well as for biologists, oceanographers, computer engineers, physicists, and mathematicians, and for civilian and naval personnel who are looking for a introductory overview of the topic.
Author | : Thomas Rossing |
Publisher | : Springer Science & Business Media |
Total Pages | : 1179 |
Release | : 2007-06-21 |
Genre | : Science |
ISBN | : 0387304460 |
This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Author | : Anuj Sehgal |
Publisher | : Lulu.com |
Total Pages | : 114 |
Release | : 2013-11-21 |
Genre | : Technology & Engineering |
ISBN | : 130464636X |
[B&W Edition] In order to examine the practices used by underwater sensor networks for successful off-shore deep sea deployments this book analyzes the underwater channel acoustic propagation model and also looks briefly at the characteristics of the underwater transducers along with the unique effect that they pose upon sonar based communication systems. The book then goes on to exploring the state of the art in underwater sensor network design paradigms followed by an analysis of areas that warrant research. A discussion on simulating such networks and an analysis of the characteristics of the underwater acoustic channel is also carried out.
Author | : N. C. Nicholas |
Publisher | : |
Total Pages | : 139 |
Release | : 1971 |
Genre | : |
ISBN | : |
Sound propagation in the deep ocean is not adequately described by the high frequency ray acoustics approximation, and existing wave formulations are limited. A wave solution (valid at low frequencies) is formulated for an idealized representation of the sound speed profile in the deep sound channel. Perturbation theory is applied to the ideal case to form solutions for sound speed profiles found in the ocean. Extensive calculations are made to detail the ideal solutions and to show the validity of the perturbed solutions for some realistic sound speed profiles. (Author).
Author | : J.A. DeSanto |
Publisher | : Springer Science & Business Media |
Total Pages | : 295 |
Release | : 2013-11-11 |
Genre | : Science |
ISBN | : 3642812945 |
This Topics volume is devoted to a study of sound propagation in the ocean. The effect of the interior of the ocean on underwater sound is analogous to the effect of a lens on light. The oceanic lens is related, as in light propagation, to the index of refraction of the medium. The latter is giv~n by the ratio of the sound frequency to the speed of sound in water, typi ca lly about 1500 m s -1. It is the vari ation of the sound speed due to changing temperature, density, salinity, and pres sure in the complex ocean environment which creates the lens effect. Many oceanic processes such as currents, tides, eddies (circulating, translating regions of wa ter), and internal waves (the wave-like structure of the oceanic density variabil ity) contri bute in turn to the changes in sound speed'. The net effect of the ocean lens is to trap and guide sound waves in a channel created by the lens. The trapped sound can then propagate thousands of miles in this oceanic waveguide. In addition to the propagation in the interior of the ocean, sound can propagate into and back out of the ocean bottom as well as scatter from the ocean surface. Just as the sound produced by a loudspeaker in a room is affected by the walls of the room, so the ocean boundaries and the material properties below the ocean bottom are essential ingredients in the problem.