Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Algorithm For Computation Of The Acoustic Plane Wave Reflection Coefficient Of The Ocean Bottom
Download Algorithm For Computation Of The Acoustic Plane Wave Reflection Coefficient Of The Ocean Bottom full books in PDF, epub, and Kindle. Read online Algorithm For Computation Of The Acoustic Plane Wave Reflection Coefficient Of The Ocean Bottom ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Algorithm for Computation of the Acoustic Plane-wave Reflection Coefficient of the Ocean Bottom by :
Download or read book Algorithm for Computation of the Acoustic Plane-wave Reflection Coefficient of the Ocean Bottom written by and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Submitted in partial fulfillment of the requirements for the degree of Electrical Engineer at the Woods Hole Oceanographic Institution and the Massachusetts Institute of Technology June 1979.
Book Synopsis Algorithm for Computation of the Acoustic Plane-wave Reflection Coefficient of the Ocean Bottom by : David Richard Martinez
Download or read book Algorithm for Computation of the Acoustic Plane-wave Reflection Coefficient of the Ocean Bottom written by David Richard Martinez and published by . This book was released on 1980 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Ocean Acoustics by : Finn B. Jensen
Download or read book Computational Ocean Acoustics written by Finn B. Jensen and published by Springer Science & Business Media. This book was released on 2000-03-23 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Many practical suggestions and tips; the examples are meaningful and the illustrations are effective....Destined to become a classic reference that any serious practitioner of ocean acoustics cannot afford to ignore." Revue de livre Authored by four internationally renowned scientists, this volume covers 20 years of progress in computational ocean acoustics and presents the latest numerical techniques used in solving the wave equation in heterogeneous fluid-solid media. The authors detail various computational schemes and illustrate many of the fundamental propagation features via 2-D color displays.
Book Synopsis The numerical synthesis and inversion of acoustic fields using the Hankel transform with application to the estimation of the plane wave reflection coefficient of the ocean bottom by : Douglas Robert Mook
Download or read book The numerical synthesis and inversion of acoustic fields using the Hankel transform with application to the estimation of the plane wave reflection coefficient of the ocean bottom written by Douglas Robert Mook and published by . This book was released on 1983 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The plane wave reflection coefficient is an important geometry independent means of specifying the acoustic response of a horizontally stratified ocean bottom. It is an integral step in the inversion of acoustic field measurements to obtain parameters of the bottom and it is used to characterize an environment for purposes of acoustic imaging. This thesis studies both the generation of synthetic pressure fields through the plane wave reflection coefficient and the inversion of measured pressure fields to estimate the plane wave reflection coefficient. These are related through the Sommerfeld integral which is in the form of a Hankel transform. The Hankel transform is extensively studied in this thesis and both theoretical properties and numerical implementations are considered. These results have broad applications. When we apply them to the generation of synthetic data, we obtain hybrid numerical-analytical algorithms which provide extremely accurate synthetic fields without sacrifising computational speed. These algorithms can accurately incorporate the effects of trapped modes guided by slow speed layers in the bottom. We also apply these tools to study the inversion of measured pressure field data for the plane wave reflection coefficient. We address practical issues associated with the inversion procedure including removal of the source field, sampling, field measurements over a finite range, and uncontrolled variations in source-height. A phase unwrapping and associated interpolation scheme is developed to handle improperly spaced data. A preliminary inversion of real pressure field data is performed.
Book Synopsis Masters Theses in the Pure and Applied Sciences by : W. H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 24 (thesis year 1979) a total of 10,033 theses titles from 26 Canadian and 215 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 24 reports these submitted in 1979, on occasion, certain universities do report theses submitted in previous years but not reported at the time.
Book Synopsis A Technique for Measuring the Plane-wave Reflection Coefficient of the Ocean Bottom by : George V. Frisk
Download or read book A Technique for Measuring the Plane-wave Reflection Coefficient of the Ocean Bottom written by George V. Frisk and published by . This book was released on 1981 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inversion of the Acoustic Plane Wave Reflection Response of a Layered Ocean Bottom by : D. J. Thomson
Download or read book Inversion of the Acoustic Plane Wave Reflection Response of a Layered Ocean Bottom written by D. J. Thomson and published by . This book was released on 1983 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The implementation of a recently proposed inversion scheme for the scattering of acoustic plane waves by a layered ocean bottom is described. As a result of applying the forward scattering approximation to a local wave decomposition of the acoustic field, the reflection coefficient is obtained as a nonlinear Fourier transform of the logarithmic derivative of admittance. Inversion of the integral transform enables the recovery of admittance versus depth via numerical integration of the impulse response of the sea bottom. Separate recovery of both density and sound speed profiles requires two impulse responses corresponding to two district grazing angles. The capability of the inversion scheme is illustrated for three inhomogeneous models for which bandlimited impulse responses were generated synthetically. (Author).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis European Conference on Underwater Acoustics by : M. Weydert
Download or read book European Conference on Underwater Acoustics written by M. Weydert and published by CRC Press. This book was released on 2004-01-14 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the proceedings of the Conference on Underwater Acoustics, held in September 1992, to bring together all the various disciplines involved in a forum to present the latest research on all aspects of marine acoustics.
Book Synopsis Modeling Ocean-Bottom Reflection Loss Measurements with the Plane-Wave Reflection Coefficient by : N. Ross Chapman
Download or read book Modeling Ocean-Bottom Reflection Loss Measurements with the Plane-Wave Reflection Coefficient written by N. Ross Chapman and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oceanic Acoustic Modelling: Sea bottom by :
Download or read book Oceanic Acoustic Modelling: Sea bottom written by and published by . This book was released on 1975 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acoustics and Ocean Bottom by : A. Lara-Sáenz
Download or read book Acoustics and Ocean Bottom written by A. Lara-Sáenz and published by . This book was released on 1987 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exact Reconstruction of Ocean Bottom Velocity Profiles from Monochromatic Scattering Data by : André A. Merab
Download or read book Exact Reconstruction of Ocean Bottom Velocity Profiles from Monochromatic Scattering Data written by André A. Merab and published by . This book was released on 1988 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the theoretical and computational underpinnings of a novel approach to the determination of the acoustic parameters of the ocean bottom using a monochromatic source. The problem is shown to be equivalent to that of the reconstruction of the potential in a Schrodinger equation from the knowledge of the plane-wave reflection coefficient as a function of vertical wavenumber, r(kz) for all real positive k z. First, the reflection coefficient is shown to decay asymptotically at least as fast as (1/kz2) for large kz and is therefore inteqrable. The Gelfand-Levitan inversion procedure is extended to include the case of basement velocity higher than the velocity of sound in water. The neglect of bound states is shown to be justified in both clayey silt and silty clay at the 220 Hz frequency of operation. Three methods for the numerical solution of the integral equation are investigated. The first one is an "Improved Born approximation" wherein the solution is given as a series expansion the first term of which is the Born approximation while the second term represents a substantial and yet easy to implement improvement over Born. The two other methods are based on a discretization of the Gelfand-Levitan integral equation, and both avoid a matrix inversion: one by employing a recursive procedure, and the other by coupling the Gelfand-Levitan equation with a partial differential equation. Bounds are obtained on errors in the solution due either to discretization or to data inaccuracy. These methods are tested on synthetic data obtained from known geoacoustic models of the ocean bottom. Results are found to be very accurate particularly at the top of the sediment layer with resolution of less than the wavelength of the acoustic source in the water. Several effects are investigated, such as sampling, attenuation, and noise. Also examined is the gradual restriction of the reflection coefficient to a finite range of vertical wave numbers and the consequent progressive deterioration of the reconstruction. The analysis shows how to reconstruct velocity profiles in the presence of density variation when the experiment is conducted at two frequencies. Our results provide a good understanding of the issues involved in conducting a monochromatic deep ocean bottom experiment and constitute a promising technique for processing the experimental data when it becomes available.
Book Synopsis The Numerical Synthesis and Inversion of Acoustic Fields Using the Hankel Transform with Application to the Estimation of the Plane Wave Reflection Coefficient of the Ocean Bottom by :
Download or read book The Numerical Synthesis and Inversion of Acoustic Fields Using the Hankel Transform with Application to the Estimation of the Plane Wave Reflection Coefficient of the Ocean Bottom written by and published by . This book was released on 1901 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Submitted in partial fulfillment of the requirements for the degree of Doctor of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution January 1983.
Book Synopsis Underwater Acoustic Modeling and Simulation by : Paul C. Etter
Download or read book Underwater Acoustic Modeling and Simulation written by Paul C. Etter and published by CRC Press. This book was released on 2018-04-06 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This newest edition adds new material to all chapters, especially in mathematical propagation models and special applications and inverse techniques. It has updated environmental-acoustic data in companion tables and core summary tables with the latest underwater acoustic propagation, noise, reverberation, and sonar performance models. Additionally
Book Synopsis Acoustic Sensing Techniques for the Shallow Water Environment by : Andrea Caiti
Download or read book Acoustic Sensing Techniques for the Shallow Water Environment written by Andrea Caiti and published by Springer Science & Business Media. This book was released on 2006-09-21 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the collection of papers from the second workshop on Experimental Acoustic Inversion Techniques for Exploration of the Shallow Water Environment. Acoustic techniques provide the most effective means for remote sensing of ocean and sea floor processes, and for probing the structure beneath the sea floor. No other energy propagates as efficiently in the ocean: radio waves and visible light are severely limited in range because the ocean is a highly conductive medium. However, sound from breaking waves and coastal shipping can be heard throughout the ocean, and marine mammals communicate acoustically over basin scale distances. The papers in this book indicate a high level of research interest that has generated significant progress in development and application of experimental acoustic inversion techniques. The applications span a broad scope in geosciences, from geophysical, biological and even geochemical research. The list includes: estimation of geotechnical properties of sea bed materials; navigation and mapping of the sea floor; fisheries, aquaculture and sea bed habitat assessment; monitoring of marine mammals; sediment transport; and investigation of natural geohazards in marine sediments. Audience This book is primarily intended for physicists and engineers working in underwater acoustics and oceanic engineering. It will also be of interest to marine biologists, geophysicists and oceanographers as potential users of the methodologies and techniques described in the book contributions.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1988 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
