Results 21 to 30 of about 5,789,252 (266)

Modeling and inspection applications of a coastal distributed autonomous sensor network [PDF]

open access: yes, 2012
Real time in-situ measurements are essential for monitoring and understanding physical and biochemical changes within ocean environments. Phenomena of interest usually display spatial and temporal dynamics that span different scales.
Weymouth, G.D.   +7 more
core   +2 more sources

UAN: underwater acoustic network [PDF]

open access: yes, 2011
Acoustic networks are for underwater what wifi is for terrestrial networks. The ocean is a nearly perfect media for acoustic waves in which regards long range propagation but poses a number of challenges in terms of available bandwidth, Doppler spread ...
Reinen, Tor Arne   +7 more
core   +2 more sources

Underwater optical wireless sensor network for real-time underwater environmental monitoring

open access: yes, 2022
With the growing number of underwater vehicles and devices used for marine environmental monitoring, there is an urgent need for real-time and high-speed underwater wireless communication technologies to transmit huge amounts of data.
Ng, Tien Khee   +6 more
core   +1 more source

Novel and Optimized Efficient Transmission Using Dynamic Routing Technique for Underwater Acoustic Sensor Networks

open access: yesEngineering Proceedings, 2023
Underwater acoustic sensor networks involve deploying sensors underwater in order to establish a wireless network framework aimed at discovering new resources, detecting targets, and monitoring pollution.
Swapna Babu   +5 more
doaj   +1 more source

On the Selection of Transmission Range in Underwater Acoustic Sensor Networks [PDF]

open access: yesSensors, 2012
Transmission range plays an important role in the deployment of a practical underwater acoustic sensor network (UWSN), where sensor nodes equipping with only basic functions are deployed at random locations with no particular geometrical arrangements.
Mingsheng Gao   +2 more
openaire   +6 more sources

Distributed Learning for Dynamic Channel Access in Underwater Sensor Networks

open access: yesEntropy, 2020
In this study, the problem of dynamic channel access in distributed underwater acoustic sensor networks (UASNs) is considered. First, we formulate the dynamic channel access problem in UASNs as a multi-agent Markov decision process, wherein each ...
Huicheol Shin   +3 more
doaj   +1 more source

A Reverse Localization Scheme for Underwater Acoustic Sensor Networks [PDF]

open access: yesSensors, 2012
Underwater Wireless Sensor Networks (UWSNs) provide new opportunities to observe and predict the behavior of aquatic environments. In some applications like target tracking or disaster prevention, sensed data is meaningless without location information. In this paper, we propose a novel 3D centralized, localization scheme for mobile underwater wireless
Moradi, Marjan   +2 more
openaire   +5 more sources

Localization with a Mobile Beacon in Underwater Acoustic Sensor Networks [PDF]

open access: yesSensors, 2012
Localization is one of the most important issues associated with underwater acoustic sensor networks, especially when sensor nodes are randomly deployed. Given that it is difficult to deploy beacon nodes at predetermined locations, localization schemes with a mobile beacon on the sea surface or along the planned path are inherently convenient, accurate,
Lee, Sangho, Kim, Kiseon
openaire   +4 more sources

A mechanism of topology optimization for underwater acoustic sensor networks based on autonomous underwater vehicles

open access: yesInternational Journal of Distributed Sensor Networks, 2017
Limited energy, high mobility, and unsteady acoustic communication links render the underwater acoustic sensor networks subject to performance reduction.
Ming He   +4 more
doaj   +1 more source

Design of underwater acoustic sensor communication systems based on software-defined networks in big data

open access: yesInternational Journal of Distributed Sensor Networks, 2017
The application based on big data is an important development trend of underwater acoustic sensor networks. However, traditional underwater acoustic sensor networks rely on the hardware infrastructure.
Jianping Wang, Lijuan Ma, Wei Chen
doaj   +1 more source

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