Results 71 to 80 of about 434 (130)

Style Transfer-Based Augmentation for Side-Scan Sonar Images

水下无人系统学报
Side-scan sonar(SSS) has been extensively adopted in ocean exploration because of its stability and efficiency when deployed on autonomous undersea vehicles(AUVs).
Zhongyu BAI, Hongli XU, Jingyu RU, Shaoxiong QIU   +3 more
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A Hybrid VGG-ResNet Feature Fusion Network for Object Detection in Side-Scan Sonar Images

International Journal of Emerging Research in Engineering, Science, and Management
Side-scan sonar images present significant challenges for object detection due to high noise levels, limited spatial resolution, and complex seabed structures.
Venkata Lakshmi Keerthi K, Vijayalakshmi P, Rajendran V   +2 more
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Portable Side-Scan Sonar System for Acoustic Remote Sensing of Ultra-Shallow Seafloor: Design and Field Validation

Remote Sensing
Ultra-shallow and confined water environments are challenging to survey with conventional towed side-scan sonar (SSS) due to limited access and positioning uncertainties.
Artur Grządziel, Filip Grządziel
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Side scan sonar and interferometric noise

Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008), 2002
This paper concerns the description of different noise sources encountered as well as the impact of each of these sources through sonar interferometric data acquisition. The impact of noise is directly linked to the ability of the Vernier device to determine the 2/spl pi/ ambiguity of the phase measure and to know the altitude of the bottom.
Sintes, Christophe, Solaiman, Basel
openaire   +1 more source

Bistatic side scan sonar

The Journal of the Acoustical Society of America, 1992
This discloses an improved side-scan sonar capable of locating objects on e ocean floor including the strip directly beneath the sonar transmitter and receiver, which in prior arrangements had to be obtained by another pass. The arrangement includes a platform having acoustic transmitters spaced apart a substantial distance on either side of acoustic ...
Bruce S. Maccabee, Charles E. Bell
openaire   +1 more source

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
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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

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
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The geological interpretation of side-scan sonar

Reviews of Geophysics, 1990
Recent 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
openaire   +3 more sources