Results 11 to 20 of about 5,633 (244)
Robust adaptive beamforming method for active sonar in single snapshot [PDF]
MATEC Web of Conferences, 2019 Forming narrow beams is a useful way for active sonar to anti-reverberation when it works in the shallow water. High-resolution adaptive beamforming with the performance of narrow beamwidths and low sidelobe levels is a better and more efficient method ...
Sun Xu, Li Ranwei
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IET Radar, Sonar & Navigation, 2021 Among so‐called active sensors that use self‐generated signals, sonar sensors are more challenging to implement than lidar and radar due in part to their limited angular field of sensing. A common solution to this challenge is scanning sensors that sweep
Masoud Jahromi Shirazi, Nicole Abaid
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An Interactive Transient Model Correction Active Sonar Target Tracking Method
Applied SciencesActive sonar can usually only directly measure the distance and bearing information of underwater targets, and cannot directly obtain target velocity, acceleration and other information. Therefore, the amount of information is relatively small, making it
Chao Liu, Shiliang Fang
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Method for Characterizing Active Sonar Interference Fringes Based on the Sum of Curvature [PDF]
Jisuanji gongcheng, 2022 Interference fringes are essential features for active sonar target recognition.In shallow-water environments, the energy propagation characteristics of acoustic waves are relatively complex, and signals follow two different paths:from the emitter to the
SUN Tongjing, YAN Zhiming, FAN Jun, ZHANG Hao
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A Track Initiation Method Based on Multiple Accumulation of Active Sonar Images
水下无人系统学报, 2023 To meet the requirements of autonomous detection of underwater moving targets in a strong reverberation background, a track initiation algorithm based on multiple accumulations of active sonar images was proposed to solve the problem of large amounts of ...
Kai WANG, Junsheng JIAO
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IEEE Access, 2023 For decades, the soft-kill strategy which detects high-speed underwater targets with passive sonar and attract the targets using decoys has been used. However, recently, the paradigm to respond to the high-speed underwater targets is shifting to a hard ...
Jinuk Park +3 more
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First direct measurements of behavioural responses by Cuvier's beaked whales to mid-frequency active sonar [PDF]
Biology Letters, 2013 Stacy L Deruiter +2 more
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Study on Small Samples Active Sonar Target Recognition Based on Deep Learning
Journal of Marine Science and Engineering, 2022 Underwater target classification methods based on deep learning suffer from obvious model overfitting and low recognition accuracy in the case of small samples and complex underwater environments.
Yule Chen, Hong Liang, Shuo Pang
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Study on Active Tracking of Underwater Acoustic Target Based on Deep Convolution Neural Network
Applied Sciences, 2021 The active tracking technology of underwater acoustic targets is an important research direction in the field of underwater acoustic signal processing and sonar, and it has always been issued that draws researchers’ attention.
Maofa Wang +4 more
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Journal of Marine Science and Engineering, 2021 Controlled exposure experiments (CEEs) have demonstrated that naval pulsed active sonar (PAS) can induce costly behavioral responses in cetaceans similar to antipredator responses. New generation continuous active sonars (CAS) emit lower amplitude levels
Charlotte Curé +10 more
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