Digital Underwater Acoustic Communications

Author : Lufen Xu,Tianzeng Xu
Publisher : Academic Press
Page : 290 pages
File Size : 49,9 Mb
Release : 2016-09-16
Category : Technology & Engineering
ISBN : 9780128030295

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Digital Underwater Acoustic Communications by Lufen Xu,Tianzeng Xu Pdf

Digital Underwater Acoustic Communications focuses on describing the differences between underwater acoustic communication channels and radio channels, discusses loss of transmitted sound in underwater acoustic channels, describes digital underwater acoustic communication signal processing, and provides a comprehensive reference to digital underwater acoustic communication equipment. This book is designed to serve as a reference for postgraduate students and practicing engineers involved in the design and analysis of underwater acoustic communications systems as well as for engineers involved in underwater acoustic engineering. Introduces the basics of underwater acoustics, along with the advanced functionalities needed to achieve reliable communications in underwater environment Identifies challenges in underwater acoustic channels relative to radio channels, underwater acoustic propagation, and solutions Shows how multi-path structures can be thought of as time diversity signals Presents a new, robust signal processing system, and an advanced FH-SS system for multimedia underwater acoustic communications with moderate communication ranges (above 20km) and rates (above 600bps) Describes the APNFM system for underwater acoustic communication equipment (including both civil and military applications), to be employed in active sonar to improve its performance

Author : 许天增,许鹭芬
Publisher : Unknown
Page : 332 pages
File Size : 42,7 Mb
Release : 2016
Category : Underwater acoustic telemetry
ISBN : 7502795588

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Digital Underwater Acoustic Communications by 许天增,许鹭芬 Pdf

Author : Robert Istepanian,Milica Stojanovic
Publisher : Springer Science & Business Media
Page : 283 pages
File Size : 44,8 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9781475736175

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Underwater Acoustic Digital Signal Processing and Communication Systems by Robert Istepanian,Milica Stojanovic Pdf

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 : Sheng Zhou,Zhaohui Wang
Publisher : John Wiley & Sons
Page : 498 pages
File Size : 40,8 Mb
Release : 2014-03-21
Category : Science
ISBN : 9781118693810

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OFDM for Underwater Acoustic Communications by Sheng Zhou,Zhaohui Wang Pdf

A blend of introductory material and advanced signal processing and communication techniques, of critical importance to underwater system and network development This book, which is the first to describe the processing techniques central to underwater OFDM, is arranged into four distinct sections: First, it describes the characteristics of underwater acoustic channels, and stresses the difference from wireless radio channels. Then it goes over the basics of OFDM and channel coding. The second part starts with an overview of the OFDM receiver, and develops various modules for the receiver design in systems with single or multiple transmitters. This is the main body of the book. Extensive experimental data sets are used to verify the receiver performance. In the third part, the authors discuss applications of the OFDM receiver in i) deep water channels, which may contain very long separated multipath clusters, ii) interference-rich environments, where an unintentional interference such as Sonar will be present, and iii) a network with multiple users where both non-cooperative and cooperative underwater communications are developed. Lastly, it describes the development of a positioning system with OFDM waveforms, and the progress on the OFDM modem development. Closely related industries include the development and manufacturing of autonomous underwater vehicles (AUVs) and scientific sensory equipment. AUVs and sensors in the future could integrate modems, based on the OFDM technology described in this book. Contents includes: Underwater acoustic channel characteristics/OFDM basics/Peak-to-average-ratio control/Detection and Doppler estimation (Doppler scale and CFO)/Channel estimation and noise estimation/A block-by-block progressive receiver and performance results/Extensions to multi-input multi-output OFDM/Receiver designs for multiple users/Cooperative underwater OFDM (Physical layer network coding and dynamic coded cooperation)/Localization with OFDM waveforms/Modem developments A valuable resource for Graduate and postgraduate students on electrical engineering or physics courses; electrical engineers, underwater acousticians, communications engineers

Author : M. Stojanovic
Publisher : Wiley-Interscience
Page : 448 pages
File Size : 51,6 Mb
Release : 2014-05-30
Category : Technology & Engineering
ISBN : 0470230541

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Underwater Wireless Communications by M. Stojanovic Pdf

Underwater acoustics is an important area of research, and this is the first book to date that describes the signal processing aspects of the field. Written by the pre-eminent authority on underwater acoustic communications, this text spans topics from acoustic channel modeling to signal processing, and network solutions for channel sharing among different users. This approach offers a self-contained subject treatment to practicing engineers, students, and researchers with a basic background in digital communications.

Author : Yi Lou,Niaz Ahmed
Publisher : Springer Nature
Page : 379 pages
File Size : 50,9 Mb
Release : 2021-11-15
Category : Technology & Engineering
ISBN : 9783030866495

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Underwater Communications and Networks by Yi Lou,Niaz Ahmed Pdf

This textbook covers all related communication technologies of underwater wireless communication, such as acoustic communication, optical communication, and magneto-inductive communication. After describing each technology, the authors relay their pros and cons, as it is essential to learn the underlying mechanism, advancements, and limitations of these techniques. Therefore, this book provides basics fundamentals of the three technologies, their advantages and disadvantages, and their applications. The authors also introduce research trends, pointing readers in the direction of research in the field of underwater wireless communication. The book is an essential textbook for undergraduate and graduate students in the field of underwater communications. The book is also useful as a reference to undergraduate engineering students, science students, and practicing engineers. The book includes end-of-chapter questions and numerical problems.

Author : Yang Xiao
Publisher : CRC Press
Page : 352 pages
File Size : 52,5 Mb
Release : 2010-05-19
Category : Computers
ISBN : 9781420067125

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Underwater Acoustic Sensor Networks by Yang Xiao Pdf

A detailed review of underwater channel characteristics, Underwater Acoustic Sensor Networks investigates the fundamental aspects of underwater communication. Prominent researchers from around the world consider contemporary challenges in the development of underwater acoustic sensor networks (UW-ASNs) and introduce a cross-layer approach for effec

Author : Stefano Basagni,Marco Conti,Silvia Giordano,Ivan Stojmenovic
Publisher : John Wiley & Sons
Page : 690 pages
File Size : 52,8 Mb
Release : 2013-02-07
Category : Technology & Engineering
ISBN : 9781118511237

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Mobile Ad Hoc Networking by Stefano Basagni,Marco Conti,Silvia Giordano,Ivan Stojmenovic Pdf

"An excellent book for those who are interested in learning the current status of research and development . . . [and] who want to get a comprehensive overview of the current state-of-the-art." —E-Streams This book provides up-to-date information on research and development in the rapidly growing area of networks based on the multihop ad hoc networking paradigm. It reviews all classes of networks that have successfully adopted this paradigm, pointing out how they penetrated the mass market and sparked breakthrough research. Covering both physical issues and applications, Mobile Ad Hoc Networking: Cutting Edge Directions offers useful tools for professionals and researchers in diverse areas wishing to learn about the latest trends in sensor, actuator, and robot networking, mesh networks, delay tolerant and opportunistic networking, and vehicular networks. Chapter coverage includes: Multihop ad hoc networking Enabling technologies and standards for mobile multihop wireless networking Resource optimization in multiradio multichannel wireless mesh networks QoS in mesh networks Routing and data dissemination in opportunistic networks Task farming in crowd computing Mobility models, topology, and simulations in VANET MAC protocols for VANET Wireless sensor networks with energy harvesting nodes Robot-assisted wireless sensor networks: recent applications and future challenges Advances in underwater acoustic networking Security in wireless ad hoc networks Mobile Ad Hoc Networking will appeal to researchers, developers, and students interested in computer science, electrical engineering, and telecommunications.

Author : Goyal, Nitin,Sapra, Luxmi,Sandhu, Jasminder Kaur
Publisher : IGI Global
Page : 339 pages
File Size : 42,7 Mb
Release : 2020-09-04
Category : Technology & Engineering
ISBN : 9781799836421

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Energy-Efficient Underwater Wireless Communications and Networking by Goyal, Nitin,Sapra, Luxmi,Sandhu, Jasminder Kaur Pdf

Underwater wireless sensor networks (UWSN) are envisioned as an aquatic medium for a variety of applications including oceanographic data collection, disaster management or prevention, assisted navigation, attack protection, and pollution monitoring. Similar to terrestrial wireless sensor networks (WSN), UWSNs consist of sensor nodes that collect the information and pass it to a base station; however, researchers have to face many challenges in executing the network in an aquatic medium. Energy-Efficient Underwater Wireless Communications and Networking is a crucial reference source that covers existing and future possibilities of the area as well as the current challenges presented in the implementation of underwater sensor networks. While highlighting topics such as digital signal processing, underwater localization, and acoustic channel modeling, this publication is ideally designed for machine learning experts, IT specialists, government agencies, oceanic engineers, communication experts, researchers, academicians, students, and environmental agencies concerned with optimized data flow in communication network, securing assets, and mitigating security attacks.

Author : Everett Dwight Howse
Publisher : Unknown
Page : 252 pages
File Size : 40,7 Mb
Release : 1981
Category : Acoustical engineering
ISBN : OCLC:456780892

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A Digital Acoustic Underwater Communication System by Everett Dwight Howse Pdf

Author : Vinay Divakar
Publisher : GRIN Verlag
Page : 92 pages
File Size : 50,7 Mb
Release : 2014-09-05
Category : Transportation
ISBN : 9783656735342

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Design and Development of Underwater Acoustic Modem for Shallow Waters and Short Range Communication by Vinay Divakar Pdf

Master's Thesis from the year 2014 in the subject Engineering - Naval Engineering, Ocean Engineering, , course: Electronics Systems Design, language: English, abstract: The existing underwater acoustic modems are designed for deep oceans and long range communication leading to immense consumption of power and high cost. These long range underwater acoustic modems are not suitable choice for deployment in underwater sensor networks, Hence the problem was chosen to design and develop a underwater acoustic modems that operates in shallow waters of depth below 100m and for a short range of below 100 m. Underwater wireless sensor network is contemporary technology that can be applied in the fields of security, surveillance, military, commercial, industrial and environmental. The major drawback is that the traditional underwater acoustic modems cannot be deployed for underwater sensor networks. This work focusses on the research and development of the underwater acoustic modem for shallow waters and short range communication. The relevant background theory required understand acoustics and for modelling the unique characteristics of the underwater channel is described in detail. Different concepts to model and implement the functionalities of the transmitter and receiver were explored, while converging to the most suitable choice of concepts. The modelled system is simulated for different channel conditions such as depth, range and induced ambient noise. The results were analysed in order to conclude the performance outcome of the system. The modelled system can efficiently operate for a depth of 30m, 50m and 70m for a range up to 50m. The hardware was developed using minimum number of components as a proof of concept for efficient data transmission and reception using acoustic signals. The hardware was tested to operate efficiently in air, however hardware tests for underwater is suggested for future work, which will provide much better performance since acoustics is more suitable for communication in water than air.

Author : Roald Otnes,Alfred Asterjadhi,Paolo Casari,Michael Goetz,Thor Husøy,Ivor Nissen,Knut Rimstad,Paul van Walree,Michele Zorzi
Publisher : Springer Science & Business Media
Page : 93 pages
File Size : 44,8 Mb
Release : 2012-01-19
Category : Science
ISBN : 9783642252235

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Underwater Acoustic Networking Techniques by Roald Otnes,Alfred Asterjadhi,Paolo Casari,Michael Goetz,Thor Husøy,Ivor Nissen,Knut Rimstad,Paul van Walree,Michele Zorzi Pdf

This literature study presents an overview of underwater acoustic networking. It provides a background and describes the state of the art of all networking facets that are relevant for underwater applications. This report serves both as an introduction to the subject and as a summary of existing protocols, providing support and inspiration for the development of network architectures.

Author : Marco Lanzagorta
Publisher : Springer Nature
Page : 113 pages
File Size : 42,8 Mb
Release : 2022-05-31
Category : Technology & Engineering
ISBN : 9783031016783

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Underwater Communications by Marco Lanzagorta Pdf

Underwater vehicles and underwater moorings are increasing in tactical importance. As such, it is critical to have a robust and secure communication system connecting underwater vehicles on a long seaborne mission and a ground station. As a matter of fact, the deployment of efficient communication links with underwater vehicles is one of the greatest technological challenges presently confronted by the world's naval forces. To circumvent most of the limitations involved in the use of RF or acoustic channels for perfectly secure communications with underwater vehicles, it is worth considering the feasibility of an optical channel to facilitate a two-way satellite communication link secured via perfectly secure ciphers enabled by a quantum key distribution protocol. This book offers a concise review of underwater communications systems. Our approach is pedagogical, making a strong emphasis on the physics behind the attenuating properties of the oceanic environment and the propagation of electromagnetic signals in the ELF, VLF, and optical bands. We assume the reader is familiar with the basic principles of classical electrodynamics and optics. The system design, components, and noise analysis of an underwater optical communications device are discussed in detail. Furthermore, we offer simulations of the performance of the communication system for different types of ocean waters. Our final conclusion is that it appears to be feasible to design and build underwater communications using optical classical and quantum channels secured with quantum key distribution protocols. Table of Contents: Introduction / Electrodynamics of Attenuating Media / Underwater Communication Channels / Underwater Optical Communications: Technology / Underwater Optical Communications: Noise Analysis / Underwater Optical Communications: System Performance / Underwater Quantum Communications / Conclusions PDF (1764 KB) PDF Plus (1444 KB)

Author : Thomas Neighbors,David Bradley
Publisher : Elsevier
Page : 980 pages
File Size : 55,7 Mb
Release : 2017-01-19
Category : Science
ISBN : 9780128112472

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Applied Underwater Acoustics by Thomas Neighbors,David Bradley Pdf

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

Author : Qihu Li
Publisher : Springer Science & Business Media
Page : 658 pages
File Size : 44,5 Mb
Release : 2012-03-05
Category : Science
ISBN : 9783642182907

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Digital Sonar Design in Underwater Acoustics by Qihu Li Pdf

"Digital Sonar Design in Underwater Acoustics Principles and Applications" provides comprehensive and up-to-date coverage of research on sonar design, including the basic theory and techniques of digital signal processing, basic concept of information theory, ocean acoustics, underwater acoustic signal propagation theory, and underwater signal processing theory. This book discusses the general design procedure and approaches to implementation, the design method, system simulation theory and techniques, sonar tests in the laboratory, lake and sea, and practical validation criteria and methods for digital sonar design. It is intended for researchers in the fields of underwater signal processing and sonar design, and also for navy officers and ocean explorers. Qihu Li is a professor at the Institute of Acoustics, Chinese Academy of Sciences, and an academician of the Chinese Academy of Sciences.