Results 61 to 70 of about 1,765,935 (236)

Use of multibeam imaging sonar for observation of marine mammals and fish on a marine renewable energy site.

PLoS ONE, 2022
Environmental data is crucial for planning, permitting, execution and post construction monitoring of marine renewable energy projects. In harsh conditions in which marine renewable energy is harvested, integrated monitoring platforms comprising ...
Francisco Francisco, Anke Bender, Jan Sundberg   +2 more
doaj   +1 more source

Effectiveness Assessment of Underwater Area Cruise Based on the ADC Method

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater area surveillance plays a crucial role in upholding national security, safeguarding strategic interests, and mitigating potential threats. Despite its significance, a notable gap persists in the availability of comprehensive models for assessing its effectiveness.
Qingwei Liang, Yuxin Lin, Mingyang Luo, Zhanghong Zeng   +3 more
wiley   +1 more source

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

Journal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall, Ori Lifschitz, Tali Treibitz   +2 more
wiley   +1 more source

Changes in dive behaviour during naval sonar exposure in killer whales, long-finned pilot whales, and sperm whales. [PDF]

, 2012
Anthropogenic underwater sound in the environment might potentially affect the behavior of marine mammals enough to have an impact on their reproduction and survival.
Tyack, P.L., Fahlman, A., Petter Helgevold Kvadsheim, Miller, P. J. O., Lam, F.P.A., Lam, F. P. A., Andreas eFahlman, F. P. A. Lam, Tyack, Peter L., P. J. O. Miller, Sivle, L.D., Tyack, P. L., Lise Doksæter Sivle, Frans-Peter eLam, Kvadsheim, P.H., Miller, P.J.O., Fahlman, Andreas, Sivle, Lise D, P. H. Kvadsheim, P. L. Tyack, Tyack, Peter Lloyd, Kvadsheim, P. H., Sivle, Lise Doksæter, Patrick eMiller, Miller, Patrick, L. D. Sivle, Miller, Patrick J. O., A. Fahlman, Peter eTyack, Kvadsheim, Petter H, Sivle, L. D., Lam, Frans Peter   +31 more
core   +2 more sources

Target discrimination in bubbly water

, 2012
A man-made sonar that can operate in bubbly water is relevant: decades of active sonar experience built up for deep water applications are insufficient for shallow water operations required of a changed maritime security landscape.
Chua, Gim Hwa
core   +1 more source

On the Information Advantage of Sidescan Sonar Three-Frequency Colour over Greyscale Imagery

Journal of Marine Science and Engineering, 2019
A prototype three-frequency (114, 256, and 410 kHz) colour sidescan sonar system, built by Kongsberg Underwater Mapping Ltd. (Great Yarmouth, UK), was previously described, and preliminary results presented, in Tamsett, McIlvenny, and Watts.
Duncan Tamsett, Jason McIlvenny, James Baxter, Paulo Gois, Benjamin Williamson   +4 more
doaj   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

When SAM Meets Sonar Images

IEEE Geoscience and Remote Sensing Letters
12 pages, 3 ...
Lin Wang 0027, Xiufen Ye, Liqiang Zhu, Weijie Wu, Jianguo Zhang, Huiming Xing, Chao Hu   +6 more
openaire   +3 more sources

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

Beaked whales respond to simulated and actual navy sonar [PDF]

, 2011
This article is distributed under the terms of the Creative Commons Public Domain declaration. The definitive version was published in PLoS One 6 (2011): e17009, doi:10.1371/journal.pone.0017009.Beaked whales have mass stranded during some naval sonar ...
Christopher W. Clark, Walter M. X. Zimmer, DiMarzio Nancy, Boyd Ian L., Durban, John W., Durban John W., Brandon L Southall, Moretti, David, Tyack, Peter L., Claridge Diane E., DiMarzio, Nancy A., Angela D'Amico, Peter L. Tyack, Ian L. Boyd, David Moretti, D'Amico, Angela, Ward, Jessica, John W Durban, Ward Jessica, Zimmer Walter M. X., Walter M X Zimmer, McCarthy, Elena, Peter L Tyack, Jessica Ward, Clark Christopher W., Brandon L. Southall, D'Amico Angela, Boyd, Ian L., Claridge, Diane E., Moretti David, Jarvis, Susan, Ian L Boyd, Morrissey, Ronald, Southall Brandon L., John W. Durban, Clark, Christopher W., Susan Jarvis, Nancy DiMarzio, Morrissey Ronald, Diane E. Claridge, Ronald Morrissey, Tyack Peter L., Zimmer, Walter M. X., Jarvis Susan, Southall, Brandon L., Christopher W Clark, Elena McCarthy, Moretti, David J., DiMarzio, Nancy, Diane E Claridge, McCarthy Elena   +50 more
core   +1 more source