Results 11 to 20 of about 3,088 (245)

A Secure Communication Suite for Underwater Acoustic Sensor Networks [PDF]

open access: yesSensors, 2012
In this paper we describe a security suite for Underwater Acoustic Sensor Networks comprising both fixed and mobile nodes. The security suite is composed of a secure routing protocol and a set of cryptographic primitives aimed at protecting the confidentiality and the integrity of underwater communication while taking into account the unique ...
Gianluca Dini, Angelica Lo Duca
openaire   +8 more sources

An Underwater Acoustic Network Positioning Method Based on Spatial-Temporal Self-Calibration [PDF]

open access: yesSensors, 2022
The emergence of underwater acoustic networks has greatly improved the potential capabilities of marine environment detection. In underwater acoustic network applications, node location is a basic and important task, and node location information is the ...
Chao Wang   +3 more
doaj   +2 more sources

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

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   +2 more sources

DCN-MAC: A Dynamic Channel Negotiation MAC Mechanism for Underwater Acoustic Sensor Networks [PDF]

open access: yesSensors, 2020
In the design of media access control (MAC) mechanism in underwater acoustic sensor networks (UASNs), due to the propagation characteristic of low-speed underwater acoustic signals, it is necessary to solve the spatial−temporal uncertainty problem.
Yishan Su, Lijie Dong, Qiuling Yang
doaj   +2 more sources

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

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   +2 more sources

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

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   +2 more sources

An Adaptive OFDMA-Based MAC Protocol for Underwater Acoustic Wireless Sensor Networks [PDF]

open access: yesSensors, 2012
Underwater acoustic wireless sensor networks (UAWSNs) have many applications across various civilian and military domains. However, they suffer from the limited available bandwidth of acoustic signals and harsh underwater conditions.
Issa M. Khalil   +3 more
doaj   +2 more sources

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

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

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   +1 more source

Joint Channel and Power Assignment for Underwater Cognitive Acoustic Networks on Marine Mammal-Friendly

open access: yesApplied Sciences, 2023
When marine animals and underwater acoustic sensor networks (UASNs) share spectrum resources, problems such as serious harm caused to marine animals by underwater acoustic systems and scarcity of underwater spectrum resources are encountered.
Libin Xue, Chunjie Cao
doaj   +1 more source

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