Results 1 to 10 of about 3,396 (226)

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

Delay-Fluctuation-Resistant Underwater Acoustic Network Access Method Based on Deep Reinforcement Learning [PDF]

open access: yesSensors
The slow propagation speed of acoustic waves in water leads to significant variations and random fluctuations in communication delays among underwater acoustic sensor network (UASN) nodes.
Jinli Shi, Kun Tian, Jun Zhang
doaj   +2 more sources

Optimal Underwater Acoustic Warfare Strategy Based on a Three-Layer GA-BP Neural Network

open access: yesSensors, 2022
A defense platform is usually based on two methods to make underwater acoustic warfare strategy decisions. One is through Monte-Carlo method online simulation, which is slow.
Zirui Wang   +4 more
doaj   +3 more sources

Covert underwater communication through cepstrum modulation mimicking Pseudorca crassidens whistles using machine learning [PDF]

open access: yesScientific Reports
The increasing demand for clandestine communication in underwater acoustic environment reflects the remarkable growth of research in underwater acoustic communication and networking.
Muhammad Bilal   +7 more
doaj   +2 more sources

Employing feedforward backpropagated neural network for Doppler scale estimation in underwater acoustic CP-OFDM communication [PDF]

open access: yesScientific Reports
Orthogonal frequency division multiplexing (OFDM) is a promising solution for underwater acoustic communication (UWA); however, it requires careful handling of the challenges of large multipath and severe Doppler effects inherent in underwater acoustic ...
Muhammad Muzzammil   +4 more
doaj   +2 more sources

Linking Acoustic Communications and Network Performance: Integration and Experimentation of an Underwater Acoustic Network [PDF]

open access: yesIEEE Journal of Oceanic Engineering, 2013
Underwater acoustic networks (UANs) are an emerging technology for a number of oceanic applications, ranging from oceanographic data collection to surveillance applications. However, their reliable usage in the field is still an open research problem, due to the challenges posed by the oceanic environment.
Arne Lie, A Silva, Andrea Caiti
exaly   +3 more sources

Underwater Acoustic Target Recognition: A Combination of Multi-Dimensional Fusion Features and Modified Deep Neural Network

open access: yesRemote Sensing, 2019
A method with a combination of multi-dimensional fusion features and a modified deep neural network (MFF-MDNN) is proposed to recognize underwater acoustic targets in this paper.
Xingmei Wang   +3 more
doaj   +3 more sources

High precision DOA estimation of microphone array for shipboard teleconferencing

open access: yesDianzi Jishu Yingyong, 2022
With the improvement of ship intelligence level, shipboard teleconferencing system is of great significance to improve the emergency handling capacity and promote the construction of shipboard integrated network.
Liu Yuji   +4 more
doaj   +1 more source

Underwater acoustic target recognition method based on a joint neural network.

open access: yesPLoS ONE, 2022
To improve the recognition accuracy of underwater acoustic targets by artificial neural network, this study presents a new recognition method that integrates a one-dimensional convolutional neural network and a long short-term memory network.
Xing Cheng Han   +3 more
doaj   +1 more source

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