Results 41 to 50 of about 32,987 (227)
Using Orthogonal Combined Signals in Broadband ADCP for Improving Velocity Measurement
Journal of Marine Science and Engineering, 2020 Broadband Acoustic Doppler Current Profiler (BBADCP) is a widely used technology in velocity measurements. To adapt to the varied water environment and different measurement requirements, flexible tuning of transmitted signal parameters will improve the ...
Yujing Lin, Fei Yuan, En Cheng
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Key point detection method for fish size measurement based on deep learning
IET 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
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A Biological Sensor System Using Computer Vision for Water Quality Monitoring
IEEE Access, 2018 Water pollution has seriously threatened our life, so an effective water quality monitoring mechanism is the most important part of water quality management.
Fei Yuan +3 more
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Speckle Noise Reduction in Sonar Image Based on Adaptive Redundant Dictionary
Journal of Marine Science and Engineering, 2020 As acoustic waves are affected by the channel characteristics, such as scattering and reverberation when propagating in water, sonar images often exhibit speckle noise which will cause visual quality of the image to decrease.
Yifan Huang, Weixiang Li, Fei Yuan
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IEEE Access, 2021 The dynamic topology, narrow transmission bandwidth, and limited energy of sensor nodes in mobile underwater acoustic sensor networks (UASNs) pose challenges to design an efficient and robust network for underwater communications.
Jianying Zhu +5 more
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CDMA for Underwater Acoustic Communication
, 2021 This paper provides an overview of how and why acoustic waves are important for underwater communication when compared with radio and optical waves, underwater acoustic channel, it's characteristics and model. Also about the underwater sensor architecture, challenges faced by sensor nodes in the network and Media Acess Control(MAC) protocol solutions ...
Bommisetty, Lokesh +4 more
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A novel cooperative opportunistic routing scheme for underwater sensor networks [PDF]
, 2016 Increasing attention has recently been devoted to underwater sensor networks (UWSNs) because of their capabilities in the ocean monitoring and resource discovery.
Abello +8 more
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IEEE Access, 2020 With the advancement and implementation of marine strategies in various countries, it is of great significance to collect marine data by using underwater acoustic sensor networks (UWA-SNs).
Meihuang Wang +4 more
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IEEE Access, 2020 In real ocean environments, artificial acoustic and natural acoustic systems are coexisted to share scarce spectrum resources. In this paper, we propose a marine mammals-friendly based high spectral-efficient routing (MF-HER) protocol to improve spectrum
Yougan Chen +4 more
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Sound Reception in the Yangtze Finless Porpoise and Its Extension to a Biomimetic Receptor
Biomimetics, 2023 Sound reception was investigated in the Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) at its most sensitive frequency. The computed tomography scanning, sound speed, and density results were used to develop a three-dimensional ...
Zhongchang Song +8 more
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