Results 11 to 20 of about 17,635,438 (201)
A distributed autonomous passive sonar system
Monitoring marine areas has become a fundamental activity for addressing key challenges such as biodiversity research and conservation, civilian operations on infrastructures and Marine Protected Areas (MPA), and military surveillance, with a particular focus on Anti-Submarine Warfare (ASW) and the protection of critical infrastructures. A current open
TIRANTI, ANDREA
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Passive Tracking of Multiple Underwater Targets in Incomplete Detection and Clutter Environment
Entropy, 2021 A major advantage of the use of passive sonar in the tracking multiple underwater targets is that they can be kept covert, which reduces the risk of being attacked.
Xiaohua Li, Bo Lu, Wasiq Ali, Haiyan Jin
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Remote Sensing, 2021 To acquire the enhanced underwater ship-radiated noise signal in the presence of array shape distortion in a passive sonar system, the phase difference of the line-spectrum component in ship-radiated noise is often exploited to estimate the time-delay ...
Chuanqi Zhu +5 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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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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Deep‐learning‐based line enhancer for passive sonar systems [PDF]
IET Radar, Sonar & Navigation, 2021 Abstract Detection of acoustic tonals from surfaces and underwater vehicles is important for passive sonar systems. Enhancements of the tonals are usually necessary in passive sonar prior to detections. Conventionally, passive sonars employ adaptive line enhancers (ALE) in order to realise enhancements of the tonals.
Donghao Ju +5 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 risk function for behavioral disruption of Blainville’s beaked whales (Mesoplodon densirostris) from mid-frequency active sonar [PDF]
, 2014 There is increasing concern about the potential effects of noise pollution on marine life in the world’s oceans. For marine mammals, anthropogenic sounds may cause behavioral disruption, and this can be quantified using a risk function that relates sound
Ashley Dilley +37 more
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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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