Results 71 to 80 of about 62,673 (306)

Development of universal software radio peripheral amplifier for underwater acoustic platform using software defined radio [PDF]

, 2010
First and foremost, the development of a modem using the USRP has applications in oceanographic monitoring and communication. Improved acoustic connecting would allow more efficient transfer of information between Underwater Acoustic (UWA) equipment such
Kalash, Haydar Sabeeh
core  

Acoustic positioning and tracking in Portsmouth Harbour, New Hampshire [PDF]

, 2007
Portsmouth Harbor, New Hampshire, is frequently used as a testing area for multibeam and sidescan sonars, and is the location of numerous ground-truthing studies. Having the ability to accurately position underwater sensors is an important aspect of this
Huff, Lloyd C, Mayer, Larry A., McGillicuddy, Glenn, Schmidt, Val E., Weber, Thomas C., Weirathmueller, Michelle   +5 more
core   +2 more sources

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

Advanced Science, Volume 13, Issue 15, 13 March 2026.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao, Ata Golparvar, Mohammad Javad Bathaei, Filipe Arroyo Cardoso, Clementine M. Boutry   +4 more
wiley   +1 more source

Deep learning based underwater acoustic OFDM communications [PDF]

Applied Acoustics, 2019
Abstract In this paper, we present a deep learning based underwater acoustic (UWA) orthogonal frequency-division multiplexing (OFDM) communication system. Unlike the traditional receiver for UWA OFDM communication system that performs explicitly channel estimation and equalization for the detection of transmitted symbols, the deep learning based UWA ...
Zhang, Youwen, Li, Junxuan, Zakharov, Yuriy, Li, Xiang, Li, Jianghui   +4 more
openaire   +5 more sources

Real‐Time Detection and Prevention of DoS Attack in Unmanned Marine Vehicles Using Machine Learning

SECURITY AND PRIVACY, Volume 9, Issue 2, March/April 2026.
ABSTRACT Unmanned marine vehicles (UMVs) are one of the most crucial components of the underwater communication and surveillance system in the marine and oceanographic environment. This research introduces a novel approach to stabilize the connection in an unstable underwater environment by inheriting features of communication velocities.
Noman Ali, Yousaf Saeed, Muhammad Ibrahim, Muhammad Bilal, Muhammad Tahir, Muhammad Aslam, Edore Akpokodje, Syeda Fizzah Jilani, Meng Tang   +8 more
wiley   +1 more source

Application of time reversal technique in shallow water environment

Archives of Acoustics, 2014
Underwater acoustic communications in shallow water environment is a challenging problem due to the intersymbol interference caused by time-varying dispersive multipath channel.
Sławomir Jastrzębski
doaj  

Multi-Level Multi-Technology Underwater Networks: Challenges and Opportunities for Marine Monitoring

Network
Underwater networks are crucial for monitoring the marine ecosystem, enabling data collection to support the preservation and protection of natural resources.
A. Rehman, L. Galluccio
doaj   +1 more source

A Hierarchical Communication Architecture for Oceanic Surveillance Applications

Sensors, 2011
The interest in monitoring applications using underwater sensor networks has been growing in recent years. The severe communication restrictions imposed by underwater channels make that efficient monitoring be a challenging task. Though a lot of research
Romano Fantacci, Andrea Sacco, Francesco Chiti, Alvaro Suarez, Elsa Macias   +4 more
doaj   +1 more source

Evaluating the Risk of Collision of Seals Swimming Within Metres of Operating Tidal Turbines

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT We used imaging sonar to continuously monitor wildlife at an operational tidal turbine in the Pentland Firth, Scotland, between May 2022 and June 2023. Of 704 detected seal tracks, 347 occurred during turbine operation and 122 of these were detected directly upstream of the rotating blades in the horizontal plane.
Jessica Montabaranom, Douglas Gillespie, Carol Sparling, Emma Longden, Gordon Hastie   +4 more
wiley   +1 more source

Spread-Spectrum Techniques for Bio-Friendly Underwater Acoustic Communications

IEEE Access, 2018
This paper investigates techniques to mitigate the impact of acoustic communication signals on marine life, by minimizing source level and designing waveforms with characteristics proven to reduce animal discomfort in bioacoustics studies.
Benjamin Sherlock, Jeffrey A. Neasham, Charalampos C. Tsimenidis   +2 more
doaj   +1 more source