Results 121 to 130 of about 1,248 (169)
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Nearshore Side-Scan Sonar Studies
Journal of Atmospheric and Oceanic Technology, 1993Abstract Side-scan sonars operating at 80–250 kHz have been deployed to produce narrow beams directed parallel and normal to shore on a gently sloping beach. These provide measurements of processes (such as wave propagation) seaward of the edge of the surf zone.
S. A. Thorpe, A. J. Hall
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OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158), 2002
Selection of the correct side scan sonar system for a specific application is difficult for the typical ocean operator. The source of this difficulty results from the diversity of side scan sonar designs and a general lack of knowledge on the capabilities and restrictions of available side scan sonar systems.
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Selection of the correct side scan sonar system for a specific application is difficult for the typical ocean operator. The source of this difficulty results from the diversity of side scan sonar designs and a general lack of knowledge on the capabilities and restrictions of available side scan sonar systems.
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Segmentation and Classification of Side-Scan Sonar Data
2012Side scan sonar is an acoustic sensor which uses sound waves to generate side scan sonar images. Most adaptive behavior of AUVs would require that the vehicle be able sense the environment, detect objects of interest, localize and then change its current behavior.
Mahesh Khidkikar +1 more
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Side-scan sonar image matching
IEEE Journal of Oceanic Engineering, 1998This paper presents a method for the matching of underwater images acquired with acoustic sensors. As a final objective, the system aims at matching data from two-dimensional scenes. The proposed approach carries out a hypothetical reasoning based on objects, represented by shadows and echoes in the sonar images, and their available features.
S. Daniel +4 more
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1984
The side scan sonar represents the only high-resolution seismic tool that provides coverage to both sides of a survey vessel’s track. It is a most practical and valuable tool for obtaining an acoustic picture of the sea floor. Operational side scan sonar systems were developed at the British National Institute of Oceanography following World War II, as
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The side scan sonar represents the only high-resolution seismic tool that provides coverage to both sides of a survey vessel’s track. It is a most practical and valuable tool for obtaining an acoustic picture of the sea floor. Operational side scan sonar systems were developed at the British National Institute of Oceanography following World War II, as
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Digitising of side-scan sonar signals
Ultrasonics, 1976Abstract A criterion for judging the adequacy of the digitisation rate of side-scanning sonar records has been established by inspection of the two-dimensional Fourier power spectrum of areas of record. The lowest digitising rate necessary to retain the information content in the signal is an important parameter in the efficient and economical ...
E. Whipp, D.A. Horne
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The geological interpretation of side-scan sonar
Reviews of Geophysics, 1990Recent developments in side‐scan sonar technology have increased the potential for fundamental changes in our understanding of ocean basins. Developed in the late 1960s, “side looking” sonars have been widely used for the last two decades to obtain qualitative estimates of the acoustic properties of the materials of the seafloor. Modern developments in
H. Paul Johnson, Maryann Helferty
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2002
Side scan sonar is the most commonly used remote sensing tool for detecting shipwrecks, artifacts, and other cultural resources of archaeological interest.
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Side scan sonar is the most commonly used remote sensing tool for detecting shipwrecks, artifacts, and other cultural resources of archaeological interest.
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A New Generation Side Scan Sonar
1993While it is now possible, with multibeam echosounders, to obtain true bathymetric images of the sea floor up to ranges of 10 km 1,2, the best way of imaging the underwater relief with high resolution at lower ranges remains the side scan sonar 3. This 30 years old technique is however limited in several aspects that will be discussed later.
Pierre Alais +3 more
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Side scan sonar acoustic variability
OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003The authors report the results of research on the inherent variability of side-scan sonar imagery to determine the magnitude and nature of image intensity fluctuations. Two experiments are presented in which a Klein 100-kHz system is operated under controlled conditions that remove all but purely instrumental and acoustic causes of image variability ...
J.W. Nicholson, J.S. Jaffe
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