Results 21 to 30 of about 4,045,439 (255)

Hierarchical underwater acoustic sensor networks [PDF]

open access: yesProceedings of the Fifth ACM International Workshop on UnderWater Networks - WUWNet '10, 2010
We propose a hierarchical underwater acoustic sensor network architecture in which the sensors and the collector stations operate in distinct layers. The hierarchical architecture is motivated by the property of the acoustic underwater transmission medium that for each transmission distance there exists an operating frequency for which the narrowband ...
Andrej Stefanov, Milica Stojanovic
openaire   +2 more sources

Thermoelectric energy harvesting for wireless self powered condition monitoring nodes [PDF]

open access: yes, 2013
Condition monitoring of machines and structures is commonly utilized in order to prevent failures before they can occur. For these reasons, data such as temperature, vibrations or displacements are collected and analysed. Sensors collect this information,
Royo Perez, Sandra
core   +7 more sources

Cooperative Authentication in Underwater Acoustic Sensor Networks [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2019
With the growing use of underwater acoustic communications (UWAC) for both industrial and military operations, there is a need to ensure communication security. A particular challenge is represented by underwater acoustic networks (UWANs), which are often left unattended over long periods of time. Currently, due to physical and performance limitations,
Roee Diamant   +2 more
openaire   +4 more sources

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

Pre-scheduling Pipelined Mode MAC Protocol for Underwater Acoustic Sensor Network [PDF]

open access: yesJisuanji gongcheng, 2017
Aiming at the delay problem of MACAW protocol in underwater acoustic sensor networks,on the basis of the traditional handshake protocol,this paper proposes a new Media Access Control(MAC) protocol for underwater acoustic sensor networks.The protocol uses
LIU Guangzhong,ZHU Xiangyu
doaj   +1 more source

Sensor Network Architectures for Monitoring Underwater Pipelines

open access: yesSensors, 2011
This paper develops and compares different sensor network architecture designs that can be used for monitoring underwater pipeline infrastructures. These architectures are underwater wired sensor networks, underwater acoustic wireless sensor networks, RF
Imad Jawhar   +3 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

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

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

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