Results 11 to 20 of about 4,672,975 (205)

Reinforcement Learning-Based Adaptive Modulation and Coding for Efficient Underwater Communications

open access: yesIEEE Access, 2019
In this paper, we propose a reinforcement learning-based adaptive modulation and coding scheme for underwater communications; more specifically, based on the network states such as the quality of service requirement of the sensing message, the previous ...
Wei Su   +4 more
doaj   +1 more source

A potential-flow based flight simulator for an underwater glider [PDF]

open access: yes, 2013
Underwater gliders are recent innovative types of autonomous underwater vehicles (AUVs) used in ocean exploration and observation. They adjust their buoyancy to dive and to return to the ocean surface.
LAURENS, Jean-Marc   +4 more
core   +1 more source

Research on Multi-AUVs Data Acquisition System of Underwater Acoustic Communication Network

open access: yesSensors, 2022
In order to meet the needs of large-scale underwater operations, the underwater acoustic communication network emerged, marking a historic moment. At the same time, the development of artificial intelligence has promoted the application of intelligent ...
Chunxian Gao, Wenwen Hu, Keyu Chen
doaj   +1 more source

Underwater optical wireless communications : depth dependent variations in attenuation [PDF]

open access: yes, 2013
Depth variations in the attenuation coefficient for light in the ocean were calculated using a one-parameter model based on the chlorophyll-a concentration Cc and experimentally-determined Gaussian chlorophyll-depth profiles.
Leeson, Mark S.   +2 more
core   +1 more source

Recognition of behavior state of Penaeus vannamei based on passive acoustic technology

open access: yesFrontiers in Marine Science, 2022
Underwater signal processing based on passive acoustic technology has carried out a lot of research on the behavioral sound of underwater creatures and the protection of marine resources, which proves the feasibility of passive acoustic technology for ...
Maochun Wei   +3 more
doaj   +1 more source

SotonAUV: the design and development of a small, manoeuvrable autonomous underwater vehicle [PDF]

open access: yes, 2008
The University of Southampton's entry into the Student Autonomous Underwater Challenge-Europe (SAUC-E) 2007 was a custom designed and built autonomous underwater vehicle (AUV) named 'SotonAUV'.
Sharkh, S.M.   +12 more
core   +1 more source

Key point detection method for fish size measurement based on deep learning

open access: yesIET Image Processing, 2023
Accurate fish size measurement in breeding areas is crucial for the fishing industry. Unlike acoustic methods with high equipment cost and low measurement accuracy, current image‐based methods offer a promising alternative.
Yaozhen Yu, Hao Zhang, Fei Yuan
doaj   +1 more source

Node Selection Algorithm for Underwater Acoustic Sensor Network Based on Particle Swarm Optimization

open access: yesIEEE Access, 2019
Underwater target positioning technology is the most important part of UnderWater Acoustic Sensor Network(called UWASN), and it is one of the most important research directions in this field with broad application prospects in commercial and military ...
En Cheng   +4 more
doaj   +1 more source

Surface Based Underwater Communications [PDF]

open access: yes2010 IEEE Global Telecommunications Conference GLOBECOM 2010, 2010
In an underwater environment signal propagation for the acoustic channel is subject to major multipath effect. Therefore, most underwater communication schemes require that the position of the transmitter or receiver is fixed while using directional antennas in order to ensure high signal-to-noise ratio.
Emokpae, Lloyd, Younis, Mohamed
openaire   +2 more sources

The Localization Algorithm Based on Symmetry Correction for Underwater Acoustic Networks

open access: yesIEEE Access, 2019
Underwater localization is an important and fundamental part of the Underwater Acoustic Networks (UANs). The problem we must face is that radio waves and optical waves are heavily attenuated underwater, so acoustic signals become the most common form of ...
Shaochen Zhang   +4 more
doaj   +1 more source

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