Results 31 to 40 of about 4,113,395 (325)
Off-axis targets maximize bearing Fisher Information in broadband active sonar. [PDF]
Journal of the Acoustical Society of America, 2018 L. Kloepper +3 more
semanticscholar +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Journal of the Acoustical Society of America, 2022 Sonar target recognition remains an active area of research due to the complex entanglement of features from various acoustic scatterers, background clutter, and distortion by waveguide propagation effects.
Bernice Kubicek +2 more
semanticscholar +1 more source
Modelled sonar and target depth distributions for active sonar operations in realistic environments
Proceedings of meetings on acoustics, 2022 Target detection performance of mid-frequency active sonars depends heavily on both sonar and target depth. For a given target depth, a sonar performance model may help predict a sonar depth that maximizes the detection performance in the present ...
Kristoffer Engedal Andreassen +1 more
semanticscholar +1 more source
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
doaj +1 more source
Active Sonar Target Classification Method Based on Fisher’s Dictionary Learning
Applied Sciences, 2021 The marine environment is complex and changeable, and the interference of noise and reverberation seriously affects the classification performance of active sonar equipment.
TongJing Sun +3 more
semanticscholar +1 more source
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
doaj +1 more source
Sperm whales reduce foraging effort during exposure to 1-2 kH z sonar and killer whale sounds [PDF]
, 2015 We would like to thank 3S partners and funders especially for enabling this research (NL Ministry of Defence, NOR Ministry of Defence, US Office of Naval Research, and World Wildlife Fund, Norway). PLT was supported by the Scottish Funding Council (grant
Alexander Lam, Frans-Peter +8 more
core +2 more sources