Results 21 to 30 of about 576,478 (319)

Improved high-precision approach based on deconvolution in MIMO sonar imagery

open access: yesThe Journal of Engineering, 2019
Multiple-input multiple-output (MIMO) sonar enables high-resolution imaging, which is extremely useful in underwater acoustic high-precision imagery.
Lu Yan, Shengchun Piao, Feng Xu
doaj   +1 more source

Sparse Bayesian Learning Based Direction-of-Arrival Estimation under Spatially Colored Noise Using Acoustic Hydrophone Arrays

open access: yesJournal of Marine Science and Engineering, 2021
Direction-of-arrival (DOA) estimation in a spatially isotropic white noise background has been widely researched for decades. However, in practice, such as underwater acoustic ambient noise in shallow water, the ambient noise can be spatially colored ...
Guolong Liang   +4 more
doaj   +1 more source

An Underwater Target Localization Method Utilizing Hydroacoustic Communication Signals With a Towed Cylindrical Array

open access: yesIEEE Access
Underwater target localization using a towed cylindrical array and underwater acoustic communication signals is well-suited for large-area underwater searches, offering high positioning accuracy, operational flexibility, and efficiency.
Yongshou Yang   +6 more
doaj   +1 more source

Sparse Bayesian Learning for Channel Estimation in Time-Varying Underwater Acoustic OFDM Communication

open access: yesIEEE Access, 2018
In this paper, we study the sparse Bayesian learning (SBL) framework for channel estimation in underwater acoustic (UWA) orthogonal frequency-division multiplexing (OFDM) communication systems, which provides a desirable property of preventing structural
Gang Qiao   +5 more
doaj   +1 more source

Industrial archaeoacoustics, methods and applications in heritage safeguarding. The case of the MNACTEC Territorial System project “The Sounds of Industry”

open access: yesTreballs d'Arqueologia
Archaeoacoustics, an interdisciplinary field that combines archaeology, acoustics and computer modeling, traditionally researches the sonic dimensions of ancient cultures, revealing insights beyond conventional methods.
Emilio Marx   +2 more
doaj   +1 more source

Multiple Moving Targets Detection and Parameters Estimation in Strong Reverberation Environments

open access: yesShock and Vibration, 2016
This paper considers the problem of multiple moving targets detection and parameters estimation (direction of arrival and range) in strong reverberation environments.
Ge Yu, Shengchun Piao
doaj   +1 more source

Asynchronous Multisonar Data Integration Approach Used to Detect Sparse Targets

open access: yesIEEE Access, 2019
Due to the advantage of the distributed multisensor detection system which makes sonar detect further and more accurate estimation of the target state, distributed multisensor data fusion algorithms are widely applied to the sonar detection system ...
Yang Chen   +5 more
doaj   +1 more source

Acoustic biosensors [PDF]

open access: yesEssays in Biochemistry, 2016
Resonant and acoustic wave devices have been researched for several decades for application in the gravimetric sensing of a variety of biological and chemical analytes. These devices operate by coupling the measurand (e.g. analyte adsorption) as a modulation in the physical properties of the acoustic wave (e.g.
Fogel, Ronen   +2 more
openaire   +3 more sources

APE-Sync: An Adaptive Power Efficient Time Synchronization for Mobile Underwater Sensor Networks

open access: yesIEEE Access, 2019
Time synchronization is a cooperative work's foundation among underwater sensor networks' nodes; it takes a crucial role in the application and the study of underwater sensor networks.
Feng Zhou   +5 more
doaj   +1 more source

A signal enhancement method based on the reverberation statistical information

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
This paper proposes a reverberation suppression algorithm utilizing fractional lower-order moments based on statistical properties. As fractional lower-order moments can only be applied on symmetric α-stable random variables, the energy redistribution ...
Ge Yu, Jiangjiang Sun, Xiukun Li
doaj   +1 more source

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