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

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   +2 more sources

Acoustic recordings of underwater vocalizations of Indo-Pacific humpback dolphins in Xiamen Bay, China [PDF]

open access: yesScientific Data
Vocalizations play crucial roles in dolphin biological activities. Analysis of dolphin vocalizations provides valuable insights into their behaviors and population status.
Weijie Fu   +7 more
doaj   +2 more sources

Underwater Accompanying Robot Based on SSDLite Gesture Recognition

open access: yesApplied Sciences, 2022
Underwater robots are often used in marine exploration and development to assist divers in underwater tasks. However, the underwater robots on the market have some problems, such as only a single function of object detection or tracking, the use of ...
Tingzhuang Liu   +3 more
doaj   +1 more source

An Energy Optimization Clustering Scheme for Multi-Hop Underwater Acoustic Cooperative Sensor Networks

open access: yesIEEE Access, 2020
In this paper, we propose an improved energy optimization clustering algorithm (EOCA) for the multi-hop underwater acoustic cooperative sensor networks (UWA-CSN) due to the limited energy supply of the underwater sensor nodes.
Weijian Yu   +5 more
doaj   +1 more source

ACOA-AFSA Fusion Dynamic Coded Cooperation Routing for Different Scale Multi-Hop Underwater Acoustic Sensor Networks

open access: yesIEEE Access, 2020
The limited energy supply of underwater nodes is one of the key issues for the multi-hop underwater acoustic sensor networks (UWA-SN). In this paper, the fusion scheme based on ant colony optimization algorithm (ACOA), artificial fish swarm algorithm ...
Yougan Chen   +5 more
doaj   +1 more source

Study on Feeding Activity of Litopenaeus Vannamei Based on Passive Acoustic Detection

open access: yesIEEE Access, 2020
Litopenaeus vannamei, as the main target of shrimp farming in China, has a great market prospect and high economic value. However, domestic Litopenaeus vannamei farming and feeding efficiency are low, mainly through the use of hand tools by farmers to ...
Maochun Wei   +4 more
doaj   +1 more source

Anti-Multipath Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication

open access: yesIEEE Access, 2020
Multipath due to reflections of the sea surface, seabed, and obstacles, as well as inhomogeneity within the ocean, is an important characteristic of underwater acoustic channels. Mutual interference among multiple paths causes severe amplitude fading and
Peibin Zhu   +4 more
doaj   +1 more source

Deep learning microphone array speech enhancement for multiple speaker separation

open access: yesDianzi Jishu Yingyong, 2022
With the increase of human-computer voice interaction scenes in recent years, using microphone array speech enhancement to improve speech quality has become one of the research hotspots.
Zhang Jiayang   +3 more
doaj   +1 more source

Shallow Underwater Acoustic Massive MIMO Communications

open access: yesIEEE Transactions on Signal Processing, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wu, W, Gao, X, Sun, C, Li, GY, Li, G
openaire   +4 more sources

Covert underwater acoustic communications

open access: yesThe Journal of the Acoustical Society of America, 2010
Low probability of detection (LPD) communications are conducted at a low received signal-to-noise ratio (SNR) to deter eavesdroppers to sense the presence of the transmitted signal. Successful detection at intended receiver heavily relies on the processing gain achieved by employing the direct-sequence spread-spectrum (DSSS) technique.
Jun Ling   +4 more
openaire   +2 more sources

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