Results 11 to 20 of about 18,578,389 (206)
A Decision Support System to Ease Operator Overload in Multibeam Passive Sonar [PDF]
IEEE Journal of Oceanic Engineering, 2019 Creating human-informative signal processing systems for the underwater acoustic environment that do not generate operator cognitive saturation and overload is a major challenge. To alleviate cognitive operator overload, we present a visual analytics methodology in which multiple beam-formed sonar returns are mapped to an optimized 2-D visual ...
Iain Rice, David Lowe
openaire +3 more sources
Particle filtering based track-before-detect method for passive array sonar systems [PDF]
Signal Processing, 2019 Abstract This work considers the underwater tracking of an unknown and time-varying number of targets, i.e., acoustic emitters, using passive array sonar systems. This problem becomes more challenging if the signal-to-noise ratio (SNR) of the acoustic emitter is low.
Wei Yi 0002 +4 more
openaire +3 more sources
Passive Sonar Target Detection Using Statistical Classifier and Adaptive Threshold
Applied Sciences (Switzerland), 2018 This paper presents the results of an experimental investigation about target detecting with passive sonar in Persian Gulf. Detecting propagated sounds in the water is one of the basic challenges of the researchers in sonar field.
Hassan Farsi
exaly +2 more sources
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
openaire +2 more sources
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
doaj +1 more source
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
openaire +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
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
openaire +1 more source