Results 151 to 160 of about 1,483 (184)
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From acoustic observatories to robust passive sonar
The Journal of the Acoustical Society of America, 2003The evolution of the DARPA Robust Passive Sonar (RPS) as well as the ONR Shallow Water Acoustic Testbed (SWAT) programs can be traced from concept of an acoustic observatory posed by Munk in 1980 through several assessment and feasibility studies to their current implementations. During this, the thinking on several key hypotheses matured.
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Wideband Robust Capon Beamforming for Passive Sonar
IEEE Journal of Oceanic Engineering, 2013In passive sonar, narrowband adaptive beamforming techniques can be exploited to increase the signal-to-interference-plus-noise ratio (SINR), providing that array steering vector (ASV) errors and cross-spectral density matrix (CSDM) estimation errors can be controlled.
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A Passive Sonar for UUV Surveillance Tasks
1997Abstract : The long-term goal is to develop a passive, autonomous, mobile system to investigate all types of noise in the ocean, both man-made and naturally occurring. The information will be used to improve the understanding of the noise field and the environmental factors which affect the propagation of underwater sound in coastal regions.
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Recent Developments in SOBEK Passive Sonar Technology
2012Surveillance of waterside locations for protection against threats from small fast surface vessels and underwater intruders is a very relevant but challenging problem. For this reason, the Netherlands Organisation for Applied Scientific Research (TNO) is developing SOBEK – a family of passive sonar technologies for waterside surveillance.
Hunter, A.J. +3 more
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Real-Time Underwater Maritime Object Detection in Side-Scan Sonar Images Based on Transformer-YOLOv5
Remote Sensing, 2021Yongcan Yu, Jianhu Zhao, Chao Huang
exaly
IEEE Transactions on Neural Networks and Learning Systems, 2023
Xiang Cao, Lu Ren, Changyin Sun
exaly
Xiang Cao, Lu Ren, Changyin Sun
exaly
Improving Protection Agains Intruders Using Passive Sonar [PDF]
, 2011 Divers and small vessels are increasingly recognized as a potential threat to high value assets. Harbour and waterside surveillance systems that are used to counter the threat of divers are usually based on active sonar, whose performance can be limited by reverberation in a harbour environment.Passive techniques are based on the detection of the sound
Fillinger, L. +4 more
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Underwater inspection of bridge substructures using sonar and deep convolutional network
Advanced Engineering Informatics, 2022Gang Wu
exaly
Survey on deep learning based computer vision for sonar imagery
Engineering Applications of Artificial Intelligence, 2022Yannik Steiniger, Tobias Meisen
exaly