Results 91 to 100 of about 2,167 (241)

Virtual Elastic Tether: A New Approach for Multi‐Agent Navigation in Confined Aquatic Environments

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Underwater navigation is a challenging area in the field of mobile robotics due to inherent constraints in self‐localization and communication in underwater environments. Some of these challenges can be mitigated by using collaborative multi‐agent teams.
Kanzhong Yao   +5 more
wiley   +1 more source

High-speed underwater wireless optical communication: Potential, challenges, and preliminary results

open access: yes, 2017
Traditional underwater communication systems rely on acoustic modems due their reliability and long range. However their limited data rates, lead to the exploration of alternative techniques.
Alouini, Mohamed-Slim   +1 more
core   +1 more source

Recent achievements on underwater optical wireless communication [Invited] [PDF]

open access: yes, 2019
The growing number of underwater activities is giving momentum to the development of new technologies, such as buoys, remotely operated vehicles, and autonomous underwater vehicles.
Cossu G.
core   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi   +3 more
wiley   +1 more source

A metasurface-based full-color circular auto-focusing Airy beam transmitter for stable high-speed underwater wireless optical communications

open access: yesNature Communications
Due to its unique intensity distribution, self-acceleration, and beam self-healing properties, Airy beam holds great potential for optical wireless communications in challenging channels, such as underwater environments.
Junhui Hu   +11 more
doaj   +1 more source

A survey of underwater wireless optical communication

open access: yes, 2015
Underwater wireless communication refers to transmitting data in unguided water environment through the use of wireless carriers, i.e., radio-frequency wave, acoustic wave, and optical wave. We focus, in this thesis, on the underwater wireless optical communication (UWOC) that employs optical wave as the transmission carriers.
openaire   +1 more source

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  

Scalable low‐cost seabed landers: the missing link for sustained, integrated, long‐term observations in dynamic shallow seas

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Seabed landers, when equipped with a range of biotic and abiotic sensors, offer a non‐invasive and cost‐effective solution for ecosystem‐scale monitoring of Essential Biodiversity Variables (EBVs) and Essential Ocean Variables (EOVs) in dynamic shallow seas.
Arienne Calonge   +7 more
wiley   +1 more source

Underwater Modulation Classification Using Discrete Wavelet Transform and Genetic Algorithm

open access: yesInternational Journal of Pioneering Technology and Engineering
Underwater wireless optical communication systems face significant challenges due to the heterogeneous nature of the underwater environment and the attenuation of optical signals caused by absorption and scattering.
Ali Çimen   +2 more
doaj   +1 more source

Optical wireless data transfer for rotor detection and diagnostics [PDF]

open access: yes
A special application of optical wireless data transfer, namely on-line monitoring and diagnostic of rotors in turbines and engines, has been considered in this thesis. In this application, to maintain line of sight, i.e.
Huang, Peng, Ph.D.
core  

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