Results 151 to 160 of about 2,181,991 (197)

Intensity correction of Side-Scan Sonar images

Proceedings of the 2014 IEEE Emerging Technology and Factory Automation (ETFA), 2014
This paper presents a new method to remove the effects of uneven ensonification in Side-Scan Sonar (SSS) acoustic images, facilitating their use in underwater robotics. A Lambertian model is used for the sonar scattering process, relating the received echo with the ensonification intensity, the sea bed reflectivity and the incidence angle.
Antoni Burguera, Gabriel Oliver
openaire   +2 more sources

A new generation side scan sonar

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
Side-scan sonar traditionally has used a graphic paper recording system for the display and annotation of the data. A novel side-scan system specifically designed to use color video as the primary data display is described. Several design considerations and tradeoffs are discussed, some of which are unique to a system using a video display.
R.G. Asplin, C.G. Christensson
openaire   +1 more source

Side scan sonar in oyster management

Oceans '02 MTS/IEEE, 2003
Oyster harvest from Mississippi reefs provide jobs for numerous fishermen and contribute substantially to the economy. Proper management of these reefs is vital for continued harvest. Enhancement management techniques (i.e. cultch planting and/or cultivation) should helps to ensure even greater future production.
D. Diaz, K. Cuevas, M. Buchanan, S. Gordon, W.S. Perret   +4 more
openaire   +1 more source

Segmentation and Classification of Side-Scan Sonar Data

2012
Side 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, Ramprasad Balasubramanian   +1 more
openaire   +2 more sources

Side scan sonar acoustic variability

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
The 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
openaire   +1 more source

Side scan sonar technology

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.
openaire   +1 more source

Side Scan Sonar

2002
Side scan sonar is the most commonly used remote sensing tool for detecting shipwrecks, artifacts, and other cultural resources of archaeological interest.
openaire   +1 more source

A New Generation Side Scan Sonar

1993
While 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, Pascal Challande, François Ollivier, Nicolas Cesbron   +3 more
openaire   +1 more source

Object detection in side scan sonar

SPIE Proceedings, 2015
Automatic target detection is a challenging task as the response from an underwater target may vary greatly depending on its configuration, sonar parameters and the environment. We propose a Z- test algorithm for target detection in side scan sonar image which avoids this problem that covers the variation in the target response.
Wenwu Wang, Binbin Cheng, Yao Chen
openaire   +1 more source

Nearshore Side-Scan Sonar Studies

Journal of Atmospheric and Oceanic Technology, 1993
Abstract 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
openaire   +1 more source