Results 11 to 20 of about 9,271 (162)
Anchorless underwater acoustic localization [PDF]
2017 14th Workshop on Positioning, Navigation and Communications (WPNC), 2017 pub
Elizaveta Dubrovinskaya +2 more
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Beamforming interferometry bathymetry method based on multi-coprime sensor array
International Journal of Distributed Sensor Networks, 2019 Recently, coprime array has been a popular research field in the application of direction-of-arrival estimation. Compared with uniform linear array, coprime array can be used to expand array aperture with fewer sensors, and it also has a nice direction ...
Tian Zhou +4 more
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Time Reversal Acoustic Communication Using Filtered Multitone Modulation
Sensors, 2015 The multipath spread in underwater acoustic channels is severe and, therefore, when the symbol rate of the time reversal (TR) acoustic communication using single-carrier (SC) modulation is high, the large intersymbol interference (ISI) span caused by ...
Lin Sun +4 more
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Low-Cost Fiber Optic Cantilever Accelerometer With a Spherical Tip Based on Gaussian Beam Focusing
IEEE Photonics Journal, 2021 We propose and demonstrate a low-cost and simple fiber optic cantilever accelerometer with a spherical tip based on Gaussian beam focusing. The accelerometer consists of ceramic ferrule, ceramic sleeve, receiving fiber and emitting fiber, where both ...
Lianjin Hong +3 more
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Applied Sciences, 2021 In the non-free-field, with the effect of reflection sounds from the reflection boundary, the vibration character of a submerged structure often changes, which may have significant influences on the measurement system configurations.
Wenbo Wang, Desen Yang, Jie Shi
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CDMA for Underwater Acoustic Communication
CoRR, 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 ...
Lokesh Bommisetty +4 more
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Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application
Journal of Marine Science and Engineering, 2022 In order to apply the acoustic vector hydrophone on a ship, the properties of the acoustic vector field near the underwater planar cavity baffle are studied based on the Euler description and Lagrange description.
Hongyue Chen, Zhongrui Zhu, Desen Yang
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ADOS-CFAR Algorithm for Multibeam Seafloor Terrain Detection
International Journal of Distributed Sensor Networks, 2016 To solve the false terrain problem caused by the tunnel effect in the conventional multibeam seafloor terrain detection, a detection method of multibeam seafloor terrain based on the ADOS-CFAR (Amplitude Dichotomy Order-Statistics Constant False Alarm ...
Weidong Du +4 more
doaj +1 more source
IEEE Access, 2021 In the presence of multiple sources, the performance of direction-of-arrival (DOA) estimation based on beam power maximization is susceptible to the energy leaking from the interference beams to the target beam, especially in the case that the signal of ...
Chuanqi Zhu +4 more
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A Multi-Spatial Scale Ocean Sound Speed Prediction Method Based on Deep Learning
Journal of Marine Science and EngineeringAs sound speed is a fundamental parameter of ocean acoustic characteristics, its prediction is a central focus of underwater acoustics research. Traditional numerical and statistical forecasting methods often exhibit suboptimal performance under complex ...
Yu Liu +8 more
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