Results 11 to 20 of about 1,232 (173)
An Enhanced Data-Driven Array Shape Estimation Method Using Passive Underwater Acoustic Data
Remote Sensing, 2021 Beamforming-based signal enhancement technologies in passive sonar array processing often have poor performance due to array distortion caused by rapid tactical maneuvers of the towed platform, oceanic currents, hydrodynamic effects, etc.
Qisong Wu +5 more
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A Nonlinear Data-Driven Towed Array Shape Estimation Method Using Passive Underwater Acoustic Data
Remote Sensing, 2022 Large-aperture towed linear hydrophone array has been widely used for beamforming-based signal enhancement in passive sonar systems; however, its performance can drastically decrease due to the array distortion caused by rapid tactical maneuvers of the ...
Qisong Wu, Youhai Xu
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Passive Sonar Target Identification Using Multiple-Measurement Sparse Bayesian Learning
Sensors, 2022 Accurate estimation of the frequency component is an important issue to identify and track marine objects (e.g., surface ship, submarine, etc.). In general, a passive sonar system consists of a sensor array, and each sensor receives data that have common
Myoungin Shin +3 more
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Generative adversarial learning for improved data efficiency in underwater target classification
Engineering Science and Technology, an International Journal, 2022 In the realms of the ocean, it becomes a formidable task to detect and classify the passive acoustic targets from the convoluted acoustic mixture confronted by the sonar frontend.
Satheesh Chandran C. +3 more
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Detection-Performance Prediction for Passive Sonar Systems [PDF]
The Journal of the Acoustical Society of America, 1968 Horton has derived the “direct-listening equation” as one of a set applicable to specific classes of sonar systems. From this equation, he determines the maximum allowable one-way propagation loss for a passive sonar system to detect a noise source that radiates a known energy spectral density. This paper reviews and extends Horton's results to provide
Arent H. Kits van Heyningen +1 more
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Smart Speakers: The Next Frontier in mHealth
JMIR mHealth and uHealth, 2022 The rapid dissemination and adoption of smart speakers has enabled substantial opportunities to improve human health. Just as the introduction of the mobile phone led to considerable health innovation, smart speaker computing systems carry ...
Jacob Sunshine
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Model of Signal Mark Detection in a Passive Sonar System
IOP Conference Series: Materials Science and Engineering, 2022 Abstract Modeling of broadband and narrowband signal mark detection is widely used for sonar and radar systems. In this work, the problem is considered in relation to hydroacoustics. The paper describes the formation of a stream of correctly detected and false signal marks and calculation of estimates of their parameters, taking into ...
V.V. Prokopovich, A.V. Shafranyuk
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A Broadband Beamformer Suitable for UUV to Detect the Tones Radiated from Marine Vessels
Sensors, 2018 In this paper, the issue that the underwater unmanned vehicle (UUV) with a sonar array achieves the passive detection of vessel targets by detecting the tones radiated from the targets is considered.
Shilong Ma +3 more
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Measure of Effectiveness Analysis of Passive SONAR System for Detection [PDF]
Journal of the Korea Institute of Military Science and Technology, 2012 The optimal use of sonar systems for detection is a practical problem in a given ocean environment. In order to quantify the mission achievability in general, measure of effectiveness(MOE) is defined for specific missions. In this paper, using the specific MOE for detection, which is represented as cumulative detection probability(CDP), an integrated ...
Jung-Hong Cho, Jea-Soo Kim
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Journal of Marine Science and Engineering, 2022 The creation of a Marine Internet of Things platform, including the Underwater Internet of Things, is needed to ensure the interaction and digital navigation of heterogeneous marine robotic agents. It is necessary to combine the following robotic agents:
Aleksey Kabanov, Vadim Kramar
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