Results 11 to 20 of about 32,987 (227)

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

Sensors, 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

Covert underwater acoustic communication using dolphin sounds [PDF]

The Journal of the Acoustical Society of America, 2013
In November 2012, an experiment demonstrating biological mimicry method for covert underwater acoustic communication (UAC) was conducted at Lianhua Lake in Heilongjiang China. Dolphin whistles were used for synchronization while dolphin clicks were used as information carrier.
Songzuo, Liu, Gang, Qiao, Asim, Ismail
openaire   +4 more sources

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

Scientific Data
Vocalizations play crucial roles in dolphin biological activities. Analysis of dolphin vocalizations provides valuable insights into their behaviors and population status.
Weijie Fu, Xuming Peng, Fuxing Wu, Fei Zhang, Chuang Zhang, Wenjie Xiang, Zhongchang Song, Yu Zhang   +7 more
doaj   +2 more sources

Game Theory-Based Cooperation for Underwater Acoustic Sensor Networks: Taxonomy, Review, Research Challenges and Directions. [PDF]

, 2018
Exploring and monitoring the underwater world using underwater sensors is drawing a lot of attention these days. In this field cooperation between acoustic sensor nodes has been a critical problem due to the challenging features such as acoustic channel ...
Anh, Anwar Khan, Cesar Vargas-Rosales, Dalhatu Muhammed, Garcia, Han, Jakobsson, Jha, Jiang, Jiang, Li, Mahdi Zareei, Manjula, Michiardi, Mohammad Anisi, Pocock, Rafsanjani, Tariq   +17 more
core   +12 more sources

Underwater Accompanying Robot Based on SSDLite Gesture Recognition

Applied 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, Yi Zhu, Kefei Wu, Fei Yuan   +3 more
doaj   +1 more source

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

IEEE 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, Yougan Chen, Lei Wan, Xiaokang Zhang, Peibin Zhu, Xiaomei Xu   +5 more
doaj   +1 more source

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

IEEE 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, Jianying Zhu, Lei Wan, Shenqin Huang, Xinhai Zhang, Xiaomei Xu   +5 more
doaj   +1 more source

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

IEEE 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, Yating Lin, Keyu Chen, Wei Su, En Cheng   +4 more
doaj   +1 more source

Anti-Multipath Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication

IEEE 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, Xiaomei Xu, Xingbin Tu, Yougan Chen, Yi Tao   +4 more
doaj   +1 more source

Deep learning microphone array speech enhancement for multiple speaker separation

Dianzi 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, Tong Feng, Chen Dongsheng, Huang Huixiang   +3 more
doaj   +1 more source