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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Book Description
Side-scan sonars deployed on towfish are a valued tool for imaging the sea bottom. This paper describes some recent observations in the practical effects of sidelobes and the effects of towfish attitude on the image. The images analyzed are of corner-cube reflectors, which give a very strong reflection visible over a wide range of angles. The internal structure of this reflection can be studied to investigate the beam pattern. It was also possible, in this case, to see an effect of towfish yaw.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Book Description
Side-scan sonars deployed on towfish are a valued tool for imaging the sea bottom. This paper describes some recent observations in the practical effects of sidelobes and the effects of towfish attitude on the image. The images analyzed are of corner-cube reflectors, which give a very strong reflection visible over a wide range of angles. The internal structure of this reflection can be studied to investigate the beam pattern. It was also possible, in this case, to see an effect of towfish yaw.
Author: Xiao Wang
Publisher: Infinite Study
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
To accurately achieve side scan sonar (SSS) image target detection, a novel target detection algorithm based on a neutrosophic set (NS) and diffusion maps (DMs) is proposed in this paper.
Author: Philippe Blondel
Publisher: Springer Science & Business Media
ISBN: 3540498869
Category : Science
Languages : en
Pages : 344
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Book Description
Sidescan sonar is proving to be the preeminent technique for researchers and professionals seeking knowledge about the structure and behavior of the seafloor, but its data is often difficult to interpret due to the physics of acoustic remote sensing, and to the varied geological processes at play. This book covers the fundamentals of sidescan sonar, incorporates new understanding of marine structures, and explains how to interpret sidescan sonar imagery and bathymetry.
Author: James Derek Tucker
Publisher:
ISBN:
Category : Acoustic imaging
Languages : en
Pages : 244
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Book Description
Author: Thomas Neighbors
Publisher: Elsevier
ISBN: 0128112476
Category : Science
Languages : en
Pages : 982
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Book Description
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: Ziyin Wu
Publisher: Springer Nature
ISBN: 9811597502
Category : Science
Languages : en
Pages : 409
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Book Description
This book focuses on the survey technology, post-processing technology, mapping technology and scientific application of the submarine topography and geomorphology in detail. High-resolution submarine geomorphology is a frontier branch of marine geology and marine surveying and mapping, which provides a direct basis to study the seabed surface, to understand the tectonic movement and submarine evolution. In the past two decades, high-resolution submarine geomorphology with high-precision multi-beam echo sounding, side-scan sonar and sub-bottom profiler as the major techniques, is developing very quickly and is one of the frontiers of international marine science and technology. These high techniques promote the traditional submarine geomorphology to high-resolution and quantitative research. At present, high-resolution submarine geomorphology is widely used in the delimitation of the continental shelf, the international seabed resources survey, marine engineering and marine military applications. In order to facilitate readers to understand how to acquire and apply scientific research based on submarine topographic data, it highlights the combination of theory, technology and scientific application. This book is useful as a reference for professional and technical personnel in related fields and also as a textbook for both graduate and undergraduate students as well.
Author: Andrzej Stateczny
Publisher: MDPI
ISBN: 3039439715
Category : Science
Languages : en
Pages : 468
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Book Description
The Special Issue “Radar and Sonar Imaging Processing” is a collection of 21 articles exploring many topics related to remote sensing with radar and sonar sensors. In this editorial, we present short introductions of the published articles. The series of articles in this SI deal with a broad profile of aspects of the use of radar and sonar images in line with the latest scientific trends while making use of the latest developments in science, including artificial intelligence. It can be said that both radar and sonar imaging and processing still remain a “hot topic” and much research in this area is being conducted worldwide. New techniques and methods for extracting information from radar and sonar sensors and data have been proposed and verified. Some of these will stimulate further research while others have reached maturity and can be considered for industrial implementation and development.
Author: John Perry Fish
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 208
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Book Description
Værket omfatter historie og teknik omkring undervandslydapparater, der efterhånden via sonar bliver til undervandsfotografiapparater. Teknik og billedfortolkning er forklaret grundigt. En operationel indføring i emnet
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 1322
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Book Description
Author: P.K. Trabant
Publisher: Springer Science & Business Media
ISBN: 9400964935
Category : Science
Languages : en
Pages : 273
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Book Description
The discipline encompassing the use of high-resolution geophysics for obtaining geoengineering survey data has evolved rapidly over the past decades to become an interdisciplinary subject encompassing the fields of Geophysics, engineering, geology, marine geology, oceanography, and civil engineering. While high-resolution geophysical surveys are routinely performed offshore today, this has been so only since the late 1960s. High-resolution geophysical methods are employed in the offshore environment to obtain a comprehensive picture of the sea-floor mor phology and underlying shallow stratigraphy. The purpose of the survey methods is to assist in the design and installation of bottom-supported structures such as drilling and production platforms and pipelines. Drilling structures and pipelines of steel and/or concrete have become behemoths with respect to their size and the complexity of their design in order to withstand, for periods of up to twenty-five years, an extremely harsh environment, including storm waves, strong currents, unstable sea floor conditions, and great water depths. It is therefore of paramount importance that the geometry and physical properties of the sea floor be well understood in order to provide an adequate foundation for the design lives of such structures. On land, engineering foundation data usually may be obtained by visual field inspection and shallow borehole information, but offshore the presence of the water column places certain constraints on geoengineering investigations. High-resolution geophysical methods employed in the acquisition of geoengineering data offshore are defined as the use of seismic sources and receivers that operate at acoustic frequencies greater than 100 Hz.
