Results 31 to 40 of about 3,084 (253)
Localization with a Mobile Beacon in Underwater Acoustic Sensor Networks [PDF]
Sensors, 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,
Sangho Lee, Kiseon Kim
openaire +3 more sources
A Heterogeneous Robotic Swarm for Long-Term Monitoring of Marine Environments
Applied 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
A Secure Remote Mutual Authentication Scheme Based on Chaotic Map for Underwater Acoustic Networks
IEEE 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
A Study of Localization Metrics: Evaluation of Position Errors in Wireless Sensor Networks [PDF]
, 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
AURP: An AUV-Aided Underwater Routing Protocol for Underwater Acoustic Sensor Networks
Sensors, 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
Topological configuration and optimization in underwater acoustic sensor networks: A survey
International 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
EURASIP 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
Data collection, storage and retrieval with an underwater sensor network [PDF]
, 2005 In this paper we present a novel platform for underwater sensor\ud networks to be used for long-term monitoring of coral\ud reefs and sheries. The sensor network consists of static\ud and mobile underwater sensor nodes. The nodes communicate\ud point-to-
M. Dunbabin +9 more
core +1 more source
TDA-MAC: TDMA Without Clock Synchronization in Underwater Acoustic Networks
IEEE Access, 2018 This paper investigates the application of underwater acoustic sensor networks for large scale monitoring of the ocean environment. The low propagation speed of acoustic signals presents a fundamental challenge in coordinating the access to the shared ...
Nils Morozs +2 more
doaj +1 more source
Epidermal Patch Technologies for Integrated Healthcare and Infection Management
Advanced Healthcare Materials, EarlyView.Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang +7 more
wiley +1 more source