Download or read book Optimal Ocean Acoustic Tomography and Navigation with Moving Sources written by and published by . This book was released on 1997 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal Ocean Acoustic Tomography and Navigation with Moving Sources written by Max Deffenbaugh and published by . This book was released on 1997 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Acoustic Tomography with Moving Sources and Receivers written by and published by . This book was released on 1991 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental goal of the research performed under this contract has been to determine the precision with which the ocean mesoscale sound speed field can be measured using acoustic techniques. The basic idea is straightforward: to use acoustic sources and/or receivers suspended from ships to provide dense sets of acoustic ray paths in order to construct sound speed maps with mesoscale resolution over large areas. We named the technique Moving Ship Tomography. Determining the fraction of ocean sound speed variance that can be measured using acoustic techniques is of critical importance in potential applications to passive and active ASW systems. The ocean sound speed field is required as input for matched field (and other) processing of long range acoustic transmissions. The ability to measure the ocean sound speed (temperature) field with mesoscale resolution is also important to the study of eddy kinematics and dynamics, to verify numerical models, and to study data assimilation techniques.
Download or read book Ocean Acoustic Tomography written by Walter Heinrich Munk and published by Cambridge University Press. This book was released on 1995-06-30 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the oceanography and mathematics necessary to develop a practical system to interpret the behaviour of the oceans.
Download or read book Optimal Localization of Ocean Acoustic Sources in an Uncertain Environment written by Anthony M. Richardson and published by . This book was released on 1990 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coastal Acoustic Tomography written by Arata Kaneko and published by Elsevier. This book was released on 2020-02-05 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal Acoustic Tomography begins with the specifics required for designing a Coastal Acoustic Tomography (CAT) experiment and operating the CAT system in coastal seas. Following sections discuss the procedure for data analyses and various application examples of CAT to coastal/shallow seas (obtained in various locations). These sections are broken down into four kinds of methods: horizontal-slice inversion, vertical-slice inversion, modal expansion method and data assimilation. This book emphasizes how dynamic phenomena occurring in coastal/shallow seas can be analyzed using the standard method of inversion and data assimilation. The book is relevant for physical oceanographers, ocean environmentalists and ocean dynamists, focusing on the event being observed rather than the intrinsic details of observational processes. Application examples of successful dynamic phenomena measured by coastal acoustic tomography are also included. - Provides the information needed for researchers and graduate students in physical oceanography, ocean-fluid dynamics and ocean environments to apply Ocean Acoustic Tomography (OAT) to their own fields - Presents the benefits of using acoustic tomography, including less disturbance to aquatic environments vs. other monitoring methods - Includes the assimilation of CAT data into a coastal sea circulation model, a powerful tool to predict coastal-sea environmental changes
Download or read book Fundamentals of Ocean Acoustics written by L.M. Brekhovskikh and published by Springer Science & Business Media. This book was released on 2006-04-10 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Ocean Acoustic Tomography Single Slice and Moving Ship Experiments written by and published by . This book was released on 1994 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of the ocean acoustic tomography work that supported the development of matched field processing (MFP) are summarized. This report focuses on two experiments. In Slice89 a single source transmitted to a vertical hydrophone array. This experiment improved our understanding of the single slice transfer function from scales of internal waves to 1000 km. It demonstrated the importance of unresolved high wavenumber ocean mesoscale variability to acoustic propagation. Any coherent signal processing technique must be robust against both internal wave variability and unresolved high wavenumber mesoscale variability, as both contribute roughly comparable amounts of travel time variance. The Acoustic Mid-Ocean Dynamics Experiment - Moving Ship Tomography Experiment (AMODE-MST) was a large mapping effort to address the primary goal of this tomography effort-to determine the precision with which the ocean mesoscale sound speed field can be measured for input into matched field (or other) processing of long-range acoustic transmissions. The experiment demonstrated that tomographic techniques can be used to measure the sound speed structure over a large area with high resolution.
Download or read book Instrument Tracking for Ocean Acoustic Tomography Experiments written by Anne F. Quill and published by . This book was released on 1988 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean acoustic tomography is a method for measuring the sound speed structure of a volume of ocean indirectly using the transmission of sound between instruments deployed within the area of interest. Since acoustic tomography is based on the measurement of travel time of transmitted signals, the data are very sensitive to the relative displacement of the instruments. This paper describes a navigation system which continuously tracks ocean acoustic tomography instruments. By this system, the contaminating effect of mooring motion on the measurement of travel times of acoustic signals is removed. Australia. (FR).
Download or read book Ocean Acoustic Tomography written by Alexander I. Khil'ko and published by . This book was released on 1998 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is primarily to review and collect under one cover summaries of contributions to the topic of Ocean Acoustic Tomography by Russian researchers. It was a joint effort by the Naval Research Laboratory of the United States and the Institute of Applied Physics of the Russian Academy of Sciences. The work was jointly supported by the Office of Naval Research of the United States and the Russian Foundation for Basic Research. While the United States has taken one direction in the development of tomographic methods for the study of the World Oceans the Russians have taken another. The goal here is not only to review Ocean Acoustic Tomography. but also to slant the review with a Russian flavor. This review, however, would not be complete without including selected contribution from the American literature on this topic. An excellent book by the inventors and early developers of Ocean Acoustic Tomography (Walter Munk, Peter Worcester, and Carl Wunsch) already exists that details the contributions of the United States to the subject. The U.S. literature will be cited less frequently than Russian works in this review because the American publications on topics of Ocean Acoustic Tomography are more accessible and better known to the American scientific community.
Download or read book Sound Images of the Ocean written by Peter Wille and published by Springer Science & Business Media. This book was released on 2005-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sound Images of the Ocean is the first comprehensive overview of acoustic imaging applications in the various fields of marine research, utilization, surveillance, and protection. The book employs 400 sound images of the sea floor and of processes in the sea volume, contributed by more than 120 marine experts from 22 nations.
Download or read book Curricula in the Atmospheric Oceanic Hydrologic and Related Sciences written by and published by . This book was released on 1998 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Acoustic Tomography written by Bruce Miller Howe and published by . This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability of Long Range Ocean Acoustic Multipaths written by John Louis Spiesberger and published by . This book was released on 1980 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2002 with total page 1520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Springer Handbook of Acoustics written by Thomas Rossing and published by Springer Science & Business Media. This book was released on 2007-06-21 with total page 1179 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
