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Applied Underwater Acoustics

Applied Underwater Acoustics
  • Author : Thomas Neighbors,David Bradley
  • Publisher :Unknown
  • Release Date :2017-01-19
  • Total pages :980
  • ISBN : 9780128112472
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Summary : Applied Underwater Acoustics meets the needs of scientists and engineers working in underwater acoustics and graduate students solving problems in, and preparing theses on, topics in underwater acoustics. The book is structured to provide the basis for rapidly assimilating the essential underwater acoustic knowledge base for practical application to daily research and analysis. Each chapter of the book is self-supporting and focuses on a single topic and its relation to underwater acoustics. The chapters start with a brief description of the topic’s physical background, necessary definitions, and a short description of the applications, along with a roadmap to the chapter. The subtopics covered within individual subchapters include most frequently used equations that describe the topic. Equations are not derived, rather, assumptions behind equations and limitations on the applications of each equation are emphasized. Figures, tables, and illustrations related to the sub-topic are presented in an easy-to-use manner, and examples on the use of the equations, including appropriate figures and tables are also included. Provides a complete and up-to-date treatment of all major subjects of underwater acoustics Presents chapters written by recognized experts in their individual field Covers the fundamental knowledge scientists and engineers need to solve problems in underwater acoustics Illuminates, in shorter sub-chapters, the modern applications of underwater acoustics that are described in worked examples Demands no prior knowledge of underwater acoustics, and the physical principles and mathematics are designed to be readily understood by scientists, engineers, and graduate students of underwater acoustics Includes a comprehensive list of literature references for each chapter

Applied Underwater Acoustics

Applied Underwater Acoustics
  • Author : David Gorda Tucker,B. K. Gazey
  • Publisher :Unknown
  • Release Date :1966
  • Total pages :244
  • ISBN : UOM:39015023216958
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Summary :

Underwater Acoustic Systems

Underwater Acoustic Systems
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1990-02-06
  • Total pages :188
  • ISBN : 9781349205080
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Summary :

Underwater Acoustic Signal Processing

Underwater Acoustic Signal Processing
  • Author : Douglas A. Abraham
  • Publisher :Unknown
  • Release Date :2019-02-14
  • Total pages :834
  • ISBN : 9783319929835
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Summary : This book provides comprehensive coverage of the detection and processing of signals in underwater acoustics. Background material on active and passive sonar systems, underwater acoustics, and statistical signal processing makes the book a self-contained and valuable resource for graduate students, researchers, and active practitioners alike. Signal detection topics span a range of common signal types including signals of known form such as active sonar or communications signals; signals of unknown form, including passive sonar and narrowband signals; and transient signals such as marine mammal vocalizations. This text, along with its companion volume on beamforming, provides a thorough treatment of underwater acoustic signal processing that speaks to its author’s broad experience in the field.

Underwater Acoustic Data Processing

Underwater Acoustic Data Processing
  • Author : Y. T. Chan
  • Publisher :Unknown
  • Release Date :1989-03-31
  • Total pages :674
  • ISBN : 0792301277
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Summary : This book contains the papers that were accepted for presentation at the 1988 NATO Advanced Study Institute on Underwater Acoustic Data Processing, held at the Royal Military College of Canada from 18 to 29 July, 1988. Approximately 110 participants from various NATO countries were in attendance during this two week period. Their research interests range from underwater acoustics to signal processing and computer science; some are renowned scientists and some are recent Ph.D. graduates. The purpose of the ASI was to provide an authoritative summing up of the various research activities related to sonar technology. The exposition on each subject began with one or two tutorials prepared by invited lecturers, followed by research papers which provided indications of the state of development in that specific area. I have broadly classified the papers into three sections under the titles of I. Propagation and Noise, II. Signal Processing and III. Post Processing. The reader will find in Section I papers on low frequency acoustic sources and effects of the medium on underwater acoustic propagation. Problems such as coherence loss due to boundary interaction, wavefront distortion and multipath transmission were addressed. Besides the medium, corrupting noise sources also have a strong influence on the performance of a sonar system and several researchers described methods of modeling these sources.

Underwater Acoustic System Analysis

Underwater Acoustic System Analysis
  • Author : William S. Burdic
  • Publisher :Unknown
  • Release Date :2002
  • Total pages :466
  • ISBN : UCSD:31822035695576
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Summary : Underwater Aacoustic System Analysis provides a comprehensive exploration of underwater acoustics, acoustic signal generation, and acoustic signal processing for the practicing systems analyst and systems engineer. This second edition, first published in 1991, contains all the valuable information in the earlier edition plus a detailed discussion of of adaptive processing as applied to spatial filtering. Highlights of the book are: * Generation and propagation of compressional acoustic acoustic waves in the ocean * narrowband signatures of surface ships caused by cavitating propeller blades and diesel engine firing * Optimization of signal-to-noise ratio and spatial reslution in the presence of multiple acoustic signals * Ambient noise in the ocean, and * Examples of sytem performance analysis

Underwater Acoustic Modelling and Simulation, Third Edition

Underwater Acoustic Modelling and Simulation, Third Edition
  • Author : P.C. Etter
  • Publisher :Unknown
  • Release Date :2003-12-08
  • Total pages :384
  • ISBN : 0203417658
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Summary : Underwater Acoustic Modeling and Simulation examines the translation of our physical understanding of sound in the sea into mathematical models that can simulate acoustic propagation, noise and reverberation in the ocean. These models are used in a variety of research and operational applications to predict and diagnose the performance of complex sonar systems operating in the undersea environment. Previous editions of the book have provided invaluable guidance to sonar technologists, acoustical oceanographers and applied mathematicians in the selection and application of underwater acoustic models. Now that simulation is fast becoming an accurate, efficient and economical alternative to field-testing and at-sea training, this new edition will also provide useful guidance to systems engineers and operations analysts interested in simulating sonar performance. Guidelines for selecting and using available propagation, noise and reverberation models are highlighted. Specific examples of each type of model are discussed to illustrate model formulations, assumptions and algorithm efficiency. Instructive case studies demonstrate applications in sonar simulation.

Underwater Acoustics

Underwater Acoustics
  • Author : Richard P. Hodges
  • Publisher :Unknown
  • Release Date :2011-06-28
  • Total pages :366
  • ISBN : 9781119957492
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Summary : Offering complete and comprehensive coverage of modern sonar spectrum system analysis, Underwater Acoustics: Analysis, Design and Performance of Sonar provides a state-of-the-art introduction to the subject and has been carefully structured to offer a much-needed update to the classic text by Urick. Expanded to included computational approaches to the topic, this book treads the line between the highly theoretical and mathematical texts and the more populist, non-mathematical books that characterize the existing literature in the field. The author compares and contrasts different techniques for sonar design, analysis and performance prediction and includes key experimental and theoretical results, pointing the reader towards further detail with extensive references. Practitioners in the field of sonar design, analysis and performance prediction as well as graduate students and researchers will appreciate this new reference as an invaluable and timely contribution to the field. Chapters include the sonar equation, radiated, self and ambient noise, active sonar sources, transmission loss, reverberation, transducers, active target strength, statistical detection theory, false alarms, contacts and targets, variability and uncertainty, modelling detections and tactical decision aids, cumulative probability of detection, tracking target motion analysis and localization, and design and evaluation of sonars

Underwater Acoustic Digital Signal Processing and Communication Systems

Underwater Acoustic Digital Signal Processing and Communication Systems
  • Author : Robert Istepanian,Milica Stojanovic
  • Publisher :Unknown
  • Release Date :2013-03-09
  • Total pages :278
  • ISBN : 9781475736175
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Summary : Underwater acoustic digital signal processing and communications is an area of applied research that has witnessed major advances over the past decade. Rapid developments in this area were made possible by the use of powerful digital signal processors (DSPs) whose speed, computational power and portability allowed efficient implementation of complex signal processing algorithms and experimental demonstration of their performance in a variety of underwater environments. The early results served as a motivation for the development of new and improved signal processing methods for underwater applications, which today range from classical of autonomous underwater vehicles and sonar signal processing, to remote control underwater wireless communications. This book presents the diverse areas of underwater acoustic signal processing and communication systems through a collection of contributions from prominent researchers in these areas. Their results, both new and those published over the past few years, have been assembled to provide what we hope is a comprehensive overview of the recent developments in the field. The book is intended for a general audience of researchers, engineers and students working in the areas of underwater acoustic signal processing. It requires the reader to have a basic understanding of the digital signal processing concepts. Each topic is treated from a theoretical perspective, followed by practical implementation details. We hope that the book can serve both as a study text and an academic reference.

Underwater Acoustic Modeling and Simulation

Underwater Acoustic Modeling and Simulation
  • Author : Paul C. Etter
  • Publisher :Unknown
  • Release Date :2018
  • Total pages :608
  • ISBN : 1138054925
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Summary : Underwater Acoustic Modeling and Simulation (5th edition) examines the translation of our physical understanding of sound in the sea into mathematical models that can simulate acoustic propagation, noise, and reverberation in the ocean. These models are used in a variety of research and operational applications to predict and diagnose the performance of complex sonar systems operating in the undersea environment. This fifth edition addresses advances in the development and utilization of underwater acoustic models since 2013. The inventory of underwater acoustic models has increased by approximately 10 percent over this period, thus demonstrating a continued expansion of related research and development activities. Major new developments are described in newly created subsections of the existing chapters. This book is intended for those who have a fundamental understanding of underwater acoustics, but who are not yet familiar with the various aspects of modeling. The level of technical detail presented in this book is appropriate for a broad spectrum of practitioners and students in sonar technology, acoustical oceanography, marine engineering, naval operations analysis, systems engineering, and applied mathematics. Sufficient mathematical derivations are included to demonstrate model formulations, and guidelines are provided to assist in the selection and proper application of these models. Updated inventory of underwater acoustic models available for current research and development activities. Discussion of specific examples of each type of model to illustrate model formulations, assumptions, and algorithm efficiency. Instructions in the proper application of models and the correct interpretation of results to assess prediction uncertainties. Demonstration of how underwater acoustic models can serve as enabling tools for assessing noise impacts on the ocean soundscape. Inclusion of updated discussion and analytic questions in each chapter to help students assess their comprehension.

An Introduction to Underwater Acoustics

An Introduction to Underwater Acoustics
  • Author : Xavier Lurton
  • Publisher :Unknown
  • Release Date :2002
  • Total pages :347
  • ISBN : 3540429670
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Summary : Presented in a clear and concise way as an introductory text and practical handbook, the book provides the basic physical phenomena governing underwater acoustical waves, propagation, reflection, target backscattering and noise. It covers the general features of sonar systems, transducers and arrays, signal processing and performance evaluation. It provides an overview of today's applications, presenting the working principles of the various systems. From the reviews: "Presented in a clear and concise way as an introductory text and practical handbook, the book provides the basic physical phenomena governing underwater acoustical waves, propagation, reflection, target backscattering and noise. ⦠It provides an overview of todayâs applications, presenting the working principles of the various systems." (Oceanis, Vol. 27 (3-4), 2003) "This book is a general survey of Underwater Acoustics, intended to make the subject âas easily accessible as possible, with a clear emphasis on applications.â In this the author has succeeded, with a wide variety of subjects presented with minimal derivation ⦠. There is an emphasis on technology and on intuitive physical explanation ⦠." (Darrell R. Jackson, Journal of the Acoustic Society of America, Vol. 115 (2), February, 2004) "This is an exciting new scientific publication. It is timely and welcome ⦠. Furthermore, it is up to date and readable. It is well researched, excellently published and ranks with earlier books in this discipline ⦠. Many persons in the marine science field including acousticians, hydrographers, oceanographers, fisheries scientists, engineers, educators, students ⦠and equipment manufacturers will benefit greatly by reading all or part of this text. The author is to be congratulated on his fine contribution ⦠." (Stephen B. MacPhee, International Hydrographic Review, Vol. 4 (2), 2003)

Underwater Acoustic Modeling and Simulation

Underwater Acoustic Modeling and Simulation
  • Author : Paul C. Etter
  • Publisher :Unknown
  • Release Date :2017-12-19
  • Total pages :554
  • ISBN : 9781466564947
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Summary : Underwater Acoustic Modeling and Simulation, Fourth Edition continues to provide the most authoritative overview of currently available propagation, noise, reverberation, and sonar-performance models. This fourth edition of a bestseller discusses the fundamental processes involved in simulating the performance of underwater acoustic systems and emphasizes the importance of applying the proper modeling resources to simulate the behavior of sound in virtual ocean environments. New to the Fourth Edition Extensive new material that addresses recent advances in inverse techniques and marine-mammal protection Problem sets in each chapter Updated and expanded inventories of available models Designed for readers with an understanding of underwater acoustics but who are unfamiliar with the various aspects of modeling, the book includes sufficient mathematical derivations to demonstrate model formulations and provides guidelines for selecting and using the models. Examples of each type of model illustrate model formulations, model assumptions, and algorithm efficiency. Simulation case studies are also included to demonstrate practical applications. Providing a thorough source of information on modeling resources, this book examines the translation of our physical understanding of sound in the sea into mathematical models that simulate acoustic propagation, noise, and reverberation in the ocean. The text shows how these models are used to predict and diagnose the performance of complex sonar systems operating in the undersea environment.

Advances inUnderwater Acoustics

Advances inUnderwater Acoustics
  • Author : Andrzej Zak
  • Publisher :Unknown
  • Release Date :2017-11-22
  • Total pages :144
  • ISBN : 9789535136095
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Summary : Underwater acoustics, despite the relatively short history, has already found practical application in many areas of human activity. It allows, among others, depth research, data transmission, and underwater observation and provides maritime transport safety and security against terrorists. Moreover, underwater acoustic technologies are also widely used in medicine, biology, and many other fields. Therefore, it is one of the most developing areas. This book is a collection of experiences of scientists from around the world engaged in research, design, and construction, as well as the daily use of underwater acoustic systems. Giving this book in the hands of the reader, we hope that it will be a treasure trove of knowledge and inspiration for further research in the field of underwater acoustics.

Fundamentals of Acoustical Oceanography

Fundamentals of Acoustical Oceanography
  • Author : Herman Medwin,Clarence S. Clay
  • Publisher :Unknown
  • Release Date :1997-11-05
  • Total pages :712
  • ISBN : 0080532160
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Summary : The developments in the field of ocean acoustics over recent years make this book an important reference for specialists in acoustics, oceanography, marine biology, and related fields. Fundamentals of Acoustical Oceanography also encourages a new generation of scientists, engineers, and entrepreneurs to apply the modern methods of acoustical physics to probe the unknown sea. The book is an authoritative, modern text with examples and exercises. It contains techniques to solve the direct problems, solutions of inverse problems, and an extensive bibliography from the earliest use of sound in the sea to present references. Written by internationally recognized scientists, the book provides background to measure ocean parameters and processes, find life and objects in the sea, communicate underwater, and survey the boundaries of the sea. Fundamentals of Acoustical Oceanography explains principles of underwater sound propagation, and describes how both actively probing sonars and passively listening hydrophones can reveal what the eye cannot see over vast ranges of the turbid ocean. This book demonstrates how to use acoustical remote sensing, variations in sound transmission, in situ acoustical measurements, and computer and laboratory models to identify the physical and biological parameters and processes in the sea. * Offers an integrated, modern approach to passive and active underwater acoustics * Contains many examples of laboratory scale models of ocean-acoustic environments, as well as descriptions of experiments at sea * Covers remote sensing of marine life and the seafloor * Includes signal processing of ocean sounds, physical and biological noises at sea, and inversions * resents sound sources, receivers, and calibration * Explains high intensities; explosive waves, parametric sources, cavitation, shock waves, and streaming * Covers microbubbles from breaking waves, rainfall, dispersion, and attenuation * Describes sound propagation along ray paths and caustics * Presents sound transmissions and normal mode methods in ocean waveguides

University Curricula in the Marine Sciences and Related Fields

University Curricula in the Marine Sciences and Related Fields
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1973
  • Total pages :229
  • ISBN : WISC:89042325357
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Summary :

Underwater Acoustics and Ocean Dynamics

Underwater Acoustics and Ocean Dynamics
  • Author : Lisheng Zhou,Wen Xu,Qianliu Cheng,Hangfang Zhao
  • Publisher :Unknown
  • Release Date :2016-10-17
  • Total pages :127
  • ISBN : 9789811024221
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Summary : These proceedings are a collection of 16 selected scientific papers and reviews by distinguished international experts that were presented at the 4th Pacific Rim Underwater Acoustics Conference (PRUAC), held in Hangzhou, China in October 2013. The topics discussed at the conference include internal wave observation and prediction; environmental uncertainty and coupling to sound propagation; environmental noise and ocean dynamics; dynamic modeling in acoustic fields; acoustic tomography and ocean parameter estimation; time reversal and matched field processing; underwater acoustic localization and communication as well as measurement instrumentations and platforms. These proceedings provide insights into the latest developments in underwater acoustics, promoting the exchange of ideas for the benefit of future research.

3D Underwater Acoustics

3D Underwater Acoustics
  • Author : Ying-Tsong Lin,Michael B. Porter,Frédéric Sturm,Marcia J. Isakson,Ching-Sang Chiu
  • Publisher :Unknown
  • Release Date :2019
  • Total pages :281
  • ISBN : OCLC:1144936488
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Summary :

Underwater Acoustic Modeling

Underwater Acoustic Modeling
  • Author : Paul C. Etter
  • Publisher :Unknown
  • Release Date :1990-12-31
  • Total pages :305
  • ISBN : UOM:39015019653727
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Summary :

Theoretical Acoustics of Underwater Structures

Theoretical Acoustics of Underwater Structures
  • Author : E A Skelton,J H James
  • Publisher :Unknown
  • Release Date :1997-12-18
  • Total pages :460
  • ISBN : 9781783262458
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Summary : This important book provides an account of the linear acoustics of basic isotropic/anisotropic structures excited by time-harmonic and transient mechanical forces and acoustic sources. Many numerical examples are given to aid physical insight and to provide benchmark computations of sound radiation and sound scattering. The theoretical methods, developed originally for naval noise control problems, should find civil application in the acoustic modelling of structures fabricated from both fibre-reinforced and isotropic materials. Such an endeavour is increasingly desirable and necessary in this noisy world. Contents:Mathematical MethodsResponse of Dynamical SystemsAcoustic EquationsScattering from Hard and Soft StructuresAcoustic Finite ElementsElastic Equations and Constitutive RelationsAcoustics of Spherical ShellAcoustics of Thin PlateAcoustics of Cylindrical ShellSpherically Layered MediaPlanar Layered MediaCylindrically Layered MediaSimply Supported CylinderFinite Axisymmetric Structure Readership: Graduate students of applied mathematics, engineering and physics; undergraduate students specializing in acoustics, and practising noise control engineers responsible for the development of mathematical models. Keywords:Isotropic/Anisotropic Structures;Acoustic Equations;Acoustics of Spherical Shell;Acoustic of Thin Plate;Acoustics of Cylindrical Shell

Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices

Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices
  • Author : Marco G. Beghi
  • Publisher :Unknown
  • Release Date :2013-08-28
  • Total pages :614
  • ISBN : 9789535111894
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Summary : Acoustics is a mature field which enjoys a never ending youth. New developments are induced by either the search for a better understanding, or by technological innovations. Micro-fabrication techniques introduced a whole new class of microdevices, which exploit acoustic waves for various tasks, and in particular for information processing and for sensing purposes. Performance improvements are achievable by better modelling tools, able to deal with more complex configurations, and by more refined techniques of fabrication and of integration in technological systems, like wireless communications. Several chapters of this book deal with modelling and fabrication techniques for microdevices, including unconventional phenomena and configurations. But this is far from exhausting the research lines in acoustics. Theoretical analyses and modelling techniques are presented, for phenomena ranging from the detection of cracks to the acoustics of the oceans. Measurement methods are also discussed, which probe by acoustic waves the properties of widely different systems.

Applied Mechanics Reviews

Applied Mechanics Reviews
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1986
  • Total pages :229
  • ISBN : UIUC:30112008993427
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Summary :