Results 111 to 120 of about 3,475,694 (250)

Side-Scan Sonar Image Matching Method Based on Topology Representation

Journal of Marine Science and Engineering
In the realm of underwater environment detection, achieving information matching stands as a pivotal step, forming an indispensable component for collaborative detection and research in areas such as distributed mapping.
Dianyu Yang, Jingfeng Yu, Can Wang, Chensheng Cheng, Guang Pan, Xin Wen, Feihu Zhang   +6 more
doaj   +1 more source

Drew Rothrock's Fundamental Contributions to Arctic Science

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract David Andrew (Drew) Rothrock III lived during a period of vigorous scientific research in the Earth Sciences, from the International Geophysical Year to the era of satellites and high‐speed computer modeling. Drew made fundamental contributions to Arctic science, helping to lay the theoretical foundations for modeling the movement and ...
Harry L. Stern, Richard E. Moritz, Michael Steele, Averil Rothrock, Yanling Yu   +4 more
wiley   +1 more source

Robust Multi-pings Forward-Looking Sonar Coherent Detection

We tackle the problem of adaptive multiping detection of quasi-static point-like targets by moving forward-looking sonar based on the principles of coherent imaging.
Matte, Guillaume, Ginolhac, Guillaume, Mian, Ammar, Ovarlez, Jean-Philippe, Charlot, Didier, Lerda, Olivier   +5 more
core   +1 more source

Sonar Transducer Characteristics for Underwater Detection;

, 2014
This paper presents the results of a study on sonar transducer characteristics for detection and quantification purpose. The main objectives was to provide Sonar tool for the evaluation of underwater target. The echo signal of the underwater target using
M. Manik, Henry
core  

A Dynamic Evaluation Method for Collaborative Search Efficiency of Multi-Sonar Systems Under Uncertain Situations

Applied Sciences
In sonar collaborative search tasks, effectively evaluating the collaborative search efficiency is an important way to measure whether a task can be successful, which can also provide strong support for optimizing search schemes.
Shizhe Wang, Weiyi Chen, Zongji Li, Xu Chen   +3 more
doaj   +1 more source

Evaluation‐Constrained Projections Reveal a Potentially Navigable Arctic by the 2030s

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract The rapid decline in Arctic sea ice thickness (SIT) is reshaping Arctic navigation prospects. However, large uncertainties in climate model skill hinder robust projections of future navigability. Here we evaluate SIT simulated by the CMIP6 using satellite, airborne, reanalysis, and in situ data sets across freezing and melting seasons.
Yu Zhang, Changxing Li, Huan Li, Changsheng Chen, Weizeng Shao, Wenyun Guo, Yi Zhou   +6 more
wiley   +1 more source

Sonar target enhancement by shrinkage of incoherent wavelet coefficients

, 2014
Background reverberation can obscure useful features of the target echo response in broadband low-frequency sonar images, adversely affecting detection and classification performance.
Hunter, A.J., Vossen, R. van
core  

Image stitching and target perception for Autonomous Underwater Vehicle-collected side-scan sonar images

Frontiers in Marine Science
IntroductionAutonomous Underwater Vehicles (AUVs) are capable of independently performing underwater navigation tasks, with side-scan sonar being a primary tool for underwater detection.
Zhuoyu Zhang, Rundong Wu, Dejun Li, Mingwei Lin, Sa Xiao, Ri Lin   +5 more
doaj   +1 more source

Design and Implementation of an Automated Wheelchair With Voice and Gesture Control, Obstacle Avoidance, and Real‐Time Location Sharing

Engineering Reports, Volume 8, Issue 11, November 2026.
This work presents a standalone smart wheelchair featuring dual voice‐ and gesture‐based control, obstacle avoidance, and real‐time location sharing. The system achieves 100% gesture accuracy and 94% voice accuracy, enabling safe, independent mobility for users with severe physical impairments and providing emergency support without smartphone ...
Md Nurul Huda Rifat, S. M. Fatin Hasnat, Md. Habibur Rahman Aslam   +2 more
wiley   +1 more source

Underwater Side-Scan Sonar Target Detection: YOLOv7 Model Combined with Attention Mechanism and Scaling Factor

Remote Sensing
Side-scan sonar plays a crucial role in underwater exploration, and the autonomous detection of side-scan sonar images is vital for detecting unknown underwater environments. However, due to the complexity of the underwater environment, the presence of a
Xin Wen, Jian Wang, Chensheng Cheng, Feihu Zhang, Guang Pan   +4 more
doaj   +1 more source