Results 41 to 50 of about 62,673 (306)

An Overview of Next-Generation Underwater Target Detection and Tracking: An Integrated Underwater Architecture

open access: yesIEEE Access, 2019
Military forces of every country are trying their best to protect their motherland from the attackers. With advancement in marine technology, it has become critical to detect and track the target by obtaining active measurements before it is close enough
Huma Ghafoor, Youngtae Noh
doaj   +1 more source

Optimization of depth-based routing for underwater wireless sensor networks through intelligent assignment of initial energy [PDF]

open access: yes, 2017
Underwater Wireless Sensor Networks (UWSNs) are extensively used to explore the diverse marine environment. Energy efficiency is one of the main concerns regarding performance of UWSNs.
Ahmed, Tanveer   +4 more
core   +3 more sources

CDMA for Underwater Acoustic Communication

open access: yes, 2021
This paper provides an overview of how and why acoustic waves are important for underwater communication when compared with radio and optical waves, underwater acoustic channel, it's characteristics and model. Also about the underwater sensor architecture, challenges faced by sensor nodes in the network and Media Acess Control(MAC) protocol solutions ...
Bommisetty, Lokesh   +4 more
openaire   +2 more sources

Underwater acoustic modem with streaming video capabilities [PDF]

open access: yes, 2015
Oceans have shown tremendous importance and impact on our lives. Thus the need for monitoring and protecting the oceans has grown exponentially in recent years.
Cabral, J.   +3 more
core   +1 more source

Implementation Adaptive Decision Feedback Equalizer for Time-Reversal Communication in Shallow Water Environment

open access: yesThe Spirit of Society Journal: International Journal of Society Development and Engagement, 2022
Underwater wireless communications are growing very fast along with human needs for applications such as defense, state security, underwater control and monitoring systems.
Yuning Widiarti, Mohammad Basuki Rahmat
doaj   +1 more source

A Channel-Aware Adaptive Modem for Underwater Acoustic Communications

open access: yesIEEE Access, 2021
Acoustic underwater channels are very challenging, because of limited bandwidth, long propagation delays, extended multipath, severe attenuation, rapid time variation and large Doppler shifts.
S. Mangione   +4 more
semanticscholar   +1 more source

Model-Driven Deep-Learning-Based Underwater Acoustic OTFS Channel Estimation

open access: yesJournal of Marine Science and Engineering, 2023
Accurate channel estimation is the fundamental requirement for recovering underwater acoustic orthogonal time–frequency space (OTFS) modulation signals.
Yuzhi Zhang   +4 more
doaj   +1 more source

Underwater Drone-Enabled Wireless Communication Systems for Smart Marine Communications: A Study of Enabling Technologies, Opportunities, and Challenges

open access: yesDrones
Underwater drones such as autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs) are revolutionizing underwater operations and are essential for advanced marine applications like environmental monitoring, deep-sea exploration, and ...
Sarun Duangsuwan, Katanyoo Klubsuwan
doaj   +1 more source

Underwater Wireless Communications for Cooperative Robotics with UWSim-NET

open access: yesApplied Sciences, 2019
The increasing number of autonomous underwater vehicles (AUVs) cooperating in underwater operations has motivated the use of wireless communications. Their modeling can minimize the impact of their limited performance in real-time robotic interventions ...
Diego Centelles   +4 more
doaj   +1 more source

Cellular Underwater Wireless Optical CDMA Network: Potentials and Challenges [PDF]

open access: yes, 2016
Underwater wireless optical communications is an emerging solution to the expanding demand for broadband links in oceans and seas. In this paper, a cellular underwater wireless optical code division multiple-access (UW-OCDMA) network is proposed to ...
Akhoundi, Farhad   +5 more
core   +2 more sources

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