Underwater Real-Time 3D Acoustical Imaging PDF Download

Author: Cheng Chi
Publisher: Springer
ISBN: 9811337446
Category : Technology & Engineering
Languages : en
Pages : 115

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Book Description
This book presents the topic of underwater real-time 3-D acoustical imaging covering the theory, algorithms and system design. It summarizes recent advances in wideband and ultra-wideband underwater real-time 3-D acoustical imaging, which will be very useful for developing next-generation systems. Through simulation techniques, readers are able to quickly learn and develop practical underwater real-time 3-D acoustical imaging systems of their own.

Author: Maria Palmese (t.d.-)
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: M. Weydert
Publisher: CRC Press
ISBN: 1482286858
Category : Architecture
Languages : en
Pages : 786

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Book Description
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.

Author: Robert Istepanian
Publisher: Springer Science & Business Media
ISBN: 1475736177
Category : Technology & Engineering
Languages : en
Pages : 283

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Book Description
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.

Author: Hua Lee
Publisher: Springer Science & Business Media
ISBN: 0306471086
Category : Science
Languages : en
Pages : 405

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Book Description
The International Symposium of Acoustical Imaging has been widely recognized as the premier forum for presentations of advanced research results in both theoretical and experimental development. Held regularly since 1968, the symposium brings together th leading international researchers in the area of acoustical imaging. The 24 meeting is the third time Santa Barbara hosted this international conference and it is the first time the meeting was held on the campus of the University of California, Santa Barbara. As many regular participants noticed over the years, this symposium has grown significantly in size due to the quality of the presentations as well as the organization itself. A few years ago multiple and poster sessions were introduced in order to accommodate this growth. In addition, the length of the presentations was shortened so more papers could be included in the sessions. During recent meetings there were discussions regarding the possibility of returning to the wonderful years when the symposium was organized in one single session with sufficient time to allow for in-depth presentation as well as discussions of each paper. And the size of the meeting was small enough that people were able to engage in serious technical interactions and all attendees would fit into one photograph. In light of the constraints of the limited budget with respect to the escalating costs it was not considered feasible.

Author: Yu Wei
Publisher: Springer Science & Business Media
ISBN: 1461529581
Category : Science
Languages : en
Pages : 767

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Book Description
The 105 theses contained in this book are selected from those whose authors were present at the 20th International Symposium on Acoustical Imaging. held at Southeast University. Nanjing. China. during September 12-14. 1992. It was the first time that the symposium had been held in China. Our efforts to host the conference goes back to the 15th International Symposium on Acoustical Imaging held in Halifax. Canada. in 1986. We are glad that the 20th symposium has been successfully held at last. We are ardent for the symposium not only because we attach much importance to the field of acoustical imaging. but also because we admire the tradition of the serious academic exploration and friendly cooperation of the scholars attending the symposium. The theses in this book are from 21 countries and those by Mr. G. Wade. Takuso Sato. J. F. Greenleaf. K. J. Langenberg. and Wencai Yang are the specially invited papers. These theses cover such important fields of acoustical imaging as follows: 1. Mathematics and physics of acoustical imaging; 2. Components and industry application; 3. Applications in medicine and biology; 4. Applications in nondestructive testing; 5. Applications in geophysics; 6. Underwater acoustical imaging. All these theses reflect the latest progress in theory and technology. We are very grateful to all the authors who have provided these theses.

Author: Michael John Kolar
Publisher:
ISBN:
Category : Underwater acoustics
Languages : en
Pages : 126

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Book Description
An experimental underwater acoustic imaging system has been designed and built. Operating at 650 KHz, real time acoustic images are obtainable. Using both geometrical optics and Fourier optics, the theory of image formation and resolution is presented. Other factors affecting image quality and system acuity are also discussed. System components include a 650 KHz lead-zirconate-titanate (PZT) illuminating transducer, and 01.4 Plexiglas acoustic converging lens, an 81 element mosaic PZT receiving transducer which is resonant at about 650 KHz, 81 amplifiers, a scanning and synchronizing system, and a display oscilloscope. Acoustic energy reflected by the target object is collected by the lens and focused onto the image receiving transducer, which is located in the image plane. The image, appearing as a spatial acoustic pressure distribution in the image plane, is sampled by the 81 element receiver, The 81 image element voltages are amplified and sequentially transmitted to the Z-axis input of an oscilloscope. Each channel amplifier is switched, in sequence, by solid state logic switches located in the scanning circuit. The scanning circuit drives the oscilloscope in a nine line TV type raster scan. If an image element is insonified, a bright spot corresponding to the image element is lighted on the oscilloscope display. The receiving system has a measured sensitivity threshold of 3 x 10−10 watts/cm2 and a measured system resolution of approximately 2. 1°. Real time images of simple styrofoam targets are displayed.

Author: Peter Wille
Publisher: Springer Science & Business Media
ISBN: 3540279105
Category : Science
Languages : en
Pages : 504

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Book Description
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.

Author: Sydney Lees
Publisher: Springer Science & Business Media
ISBN: 1441985883
Category : Science
Languages : en
Pages : 651

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Book Description
The contents of this volume are the proceedings of the 23'd International Symposium on Acoustical Imaging which took place 13-16 April, 1997, in Boston, Massachusetts. The first Symposium met 25 years ago. Originally the Symposium met in California, then elsewhere within the United States but beginning in 1988 the Symposia began to meet outside of the United States as welL It is now being held about every eighteen months, alternately in the United States and then outside. The present pattern is to hold one meeting in East Asia, then in the USA, then in Europe and again in the USA However, for scheduling reasons the next Symposium will be in Santa Barbara, California, followed by England and then East Asia. It is to be noted that the Symposium is a free standing institution, not associated with any other organization. Each meeting is the total responsibility of its chairman with the advice of past chairmen. Papers are submitted in response to the call for them and reviewed by an International Scientific Advisory Board . . The quality depends entirely on the response to the calL It is gratifYing to note that the Symposium has attained the status that attracts high quality contributions despite (or perhaps because ot) the loose structure. Two factors that have appeal are that there is only one session and that there is time during the meeting for extensive discussion.

Author: Leonardo Marotti
Publisher: Springer Science & Business Media
ISBN: 9780306453649
Category : Science
Languages : en
Pages : 858

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Book Description
Contains 131 papers presented at the September 1995 symposium. Arrangement is in sections on the mathematics and physics of acoustical imaging, novel approaches in biomedical imaging, tissue characterization, flow imaging, transducers and arrays, imaging systems and techniques, underwater and indust