Results 31 to 40 of about 5,789,252 (266)

Underwater Channel Characterization to Design Wireless Sensor Network by Bellhop [PDF]

open access: yes, 2016
Acoustic underwater link due to low attenuation is employed for underwater sensor network (UWSN). Due to water changing physical properties and different environmental conditions, the sound propagation for every underwater channel are different.
Bahrami, Nima; Universiti Teknologi Malaysia   +3 more
core   +1 more source

A Heterogeneous Robotic Swarm for Long-Term Monitoring of Marine Environments

open access: yesApplied Sciences, 2019
This paper describes an underwater acoustic sensor network consisting of a heterogeneous robotic swarm used for long-term monitoring of underwater environments. The swarm consists of a large number of underwater robots acting as sensor nodes with limited
Ivan Lončar   +6 more
doaj   +1 more source

AURP: An AUV-Aided Underwater Routing Protocol for Underwater Acoustic Sensor Networks

open access: yesSensors, 2012
Deploying a multi-hop underwater acoustic sensor network (UASN) in a large area brings about new challenges in reliable data transmissions and survivability of network due to the limited underwater communication range/bandwidth and the limited energy of ...
Sunghwan Kim   +3 more
doaj   +1 more source

A Secure Remote Mutual Authentication Scheme Based on Chaotic Map for Underwater Acoustic Networks

open access: yesIEEE Access, 2020
Underwater acoustic networks (UANs) have emerged as a new wireless sensor network structure widely used in many applications. Sensor nodes are usually placed in a hostile and unattended underwater environment to gather information with limited resource ...
Shuailiang Zhang, Xiujuan Du, Xin Liu
doaj   +1 more source

Latency-Optimized and Energy-Efficient MAC Protocol for Underwater Acoustic Sensor Networks: A Cross-Layer Approach

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
Considering the energy constraint for fixed sensor nodes and the unacceptable long propagation delay, especially for latency sensitive applications of underwater acoustic sensor networks, we propose a MAC protocol that is latency-optimized and energy ...
Qingchun Ren, Xiuzhen Cheng
doaj   +2 more sources

Topological configuration and optimization in underwater acoustic sensor networks: A survey

open access: yesInternational Journal of Distributed Sensor Networks, 2018
Marine environmental monitoring, marine resource development, and maritime rights and interests protection had put great demands on underwater acoustic sensor networks.
Ming He   +3 more
doaj   +1 more source

Optimal Deployment of Sensor Nodes Based on Performance Surface of Underwater Acoustic Communication

open access: yesSensors, 2017
The underwater acoustic sensor network (UWASN) is a system that exchanges data between numerous sensor nodes deployed in the sea. The UWASN uses an underwater acoustic communication technique to exchange data.
Sunhyo Kim, Jee Woong Choi
doaj   +1 more source

Environmental-friendly underwater acoustic communication and networks [PDF]

open access: yes, 2012
Intense harvesting of ocean resources extended exploitation activities to previously unexplored open ocean areas, to greater ocean depths and to remote polar regions. Such activities include, but are not limited to, energy, geology and fisheries.
Jesus, S. M.
core   +1 more source

A Study of Localization Metrics: Evaluation of Position Errors in Wireless Sensor Networks [PDF]

open access: yes, 2011
For wireless sensor network applications that require location information for sensor nodes, locations of nodes can be estimated by a number of localization algorithms, which inevitably may introduce various types of errors in their estimations.
Aksoy, Demet   +8 more
core   +1 more source

Frequency response characteristics of velocity type underwater acoustic sensor

open access: yesDianzi Jishu Yingyong
Sonar technology is the main method of the ocean exploration, and underwater acoustic sensor is an important part of sonar equipment. Underwater acoustic sensors are divided into scalar and vector underwater acoustic sensors.
Meng Yanyu, Luo Ming
doaj   +1 more source

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