Results 1 to 10 of about 142,224 (317)

Study on measurement of sound attenuation coefficient in bubble wake by pool [PDF]

E3S Web of Conferences, 2020
In this paper, bubbles are generated by controlling the air inlet volume of the ceramic tube array with a gas divider valve. Stimulation tests of sound attenuation characteristics of the wake of bubbles in a laboratory pool are performed.
Han Jing, Lv Shuai, Wu Zhongpeng, Zhang Mingwei, Bai Jin   +4 more
doaj   +1 more source

Experimental Results of Magnetic Communication Using the Giant Magnetoimpedance Receiver in Underwater Environments [PDF]

Journal of Electromagnetic Engineering and Science, 2023
This letter presents the topology of a novel approach to magnetic communication using a giant magnetoimpedance (GMI)-based receiver with a GMI sensor in underwater media such as freshwater.
Jang-Yeol Kim, Hyun Joon Lee, Jung Hoon Oh, Jae-Ho Lee, In-Kui Cho   +4 more
doaj   +1 more source

Full Duplex Physical and MAC Layer-Based Underwater Wireless Communication Systems and Protocols: Opportunities, Challenges, and Future Directions

Journal of Marine Science and Engineering, 2021
Underwater wireless communication has gained a great deal of attention in the last couple of decades because of its applications in the military, industrial, and monitoring sectors.
Liu Songzuo, Basit Iqbal, Imran Ullah Khan, Niaz Ahmed, Gang Qiao, Feng Zhou   +5 more
doaj   +1 more source

A Storage-Saving Quadtree-Based Multibeam Bathymetry Map Representation Method

Journal of Marine Science and Engineering, 2023
With the rapid advancement of the simultaneous localization and mapping (SLAM) technology, the collaboration of several autonomous underwater vehicles (AUVs) in large-scale seafloor imaging has become a trending topic. Electromagnetic waves are difficult
Zheng Cong, Teng Ma, Ye Li, Mingxiao Yuan, Yu Ling, Haohan Du, Chi Qi, Ziyuan Li, Shuo Xu, Qiang Zhang   +9 more
doaj   +1 more source

A Variational Bayesian-Based Simultaneous Localization and Mapping Method for Autonomous Underwater Vehicle Navigation

Journal of Marine Science and Engineering, 2022
Simultaneous Localization and Mapping (SLAM) is a well-known solution for mapping and realizing autonomous navigation of an Autonomous Underwater Vehicle (AUV) in unknown underwater environments.
Pengcheng Mu, Xin Zhang, Ping Qin, Bo He
doaj   +1 more source

Performance Evaluation of Routing Protocols for Underwater Wireless Sensor Networks

Journal of Marine Science and Engineering, 2022
Underwater Wireless Sensor Networks (UWSNs) are emerging technology for disclosing multiple applications, such as oil, earth quick, and marine environments. All sensor nodes deployed in UWSNs operate through limited power batteries.
Taj Rahman, Irfan Ahmad, Asim Zeb, Inayat Khan, Gauhar Ali, Mohammed ElAffendi   +5 more
doaj   +1 more source

A potential-flow based flight simulator for an underwater glider [PDF]

, 2013
Underwater gliders are recent innovative types of autonomous underwater vehicles (AUVs) used in ocean exploration and observation. They adjust their buoyancy to dive and to return to the ocean surface.
LAURENS, Jean-Marc, DENISET, François, LE BOULLUEC, Marc, PHOEMSAPTHAWEE, Surasak, LE BOULLUEC, M.   +4 more
core   +1 more source

Sensitivity analysis of underwater launch based on Morris method [PDF]

E3S Web of Conferences
The discharge velocity, pressure difference and acceleration of underwater launch performance are affected by many factors, including depth, sailing speed, burning rate, water temperature, density and other operating parameters.
Xie Jian, Cheng Dong, Chang Shuli, Li Pengtao   +3 more
doaj   +1 more source

3DupIC: An Underwater Scan Matching Method for Three-Dimensional Sonar Registration

Sensors, 2022
This work presents a six degrees of freedom probabilistic scan matching method for registration of 3D underwater sonar scans. Unlike previous works, where local submaps are built to overcome measurement sparsity, our solution develops scan matching ...
António Ferreira, José Almeida, Alfredo Martins, Aníbal Matos, Eduardo Silva   +4 more
doaj   +1 more source

SotonAUV: the design and development of a small, manoeuvrable autonomous underwater vehicle [PDF]

, 2008
The University of Southampton's entry into the Student Autonomous Underwater Challenge-Europe (SAUC-E) 2007 was a custom designed and built autonomous underwater vehicle (AUV) named 'SotonAUV'.
Sharkh, S.M., Phillips, A., M Furlong, J Akhtman, Turnock, S.R., Furlong, M., A Phillips, SM Sharkh, SR Turnock, Akhtman, J., Palmer, A., Phillips, A.B., A Palmer   +12 more
core   +1 more source