Results 1 to 10 of about 1,483 (184)
Passive Sonar Target Identification Using Multiple-Measurement Sparse Bayesian Learning [PDF]
Sensors, 2022 Accurate estimation of the frequency component is an important issue to identify and track marine objects (e.g., surface ship, submarine, etc.). In general, a passive sonar system consists of a sensor array, and each sensor receives data that have common
Myoungin Shin +3 more
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Direction of Arrival Estimation Using Two Hydrophones: Frequency Diversity Technique for Passive Sonar [PDF]
Sensors, 2019 The traditional passive azimuth estimation algorithm using two hydrophones, such as cross-correlation time-delay estimation and cross-spectral phase estimation, requires a high signal-to-noise ratio (SNR) to ensure the clarity of the estimated target ...
Peng Li, Xinhua Zhang, Wenlong Zhang
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Particle Filter-Guided Online Neural Networks for Multi-Target Bearing-Only Tracking in Passive Sonar Systems [PDF]
SensorsThis study proposes a novel method to address the instability issues in multi-target bearing-only tracking for passive sonar systems. Utilizing a particle filter-guided on-site training mechanism, the complex multi-classification task is simplified into ...
Jianan Wang +4 more
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Passive sonar with cylindrical array
Archives of Acoustics, 2014 The article presents a method of using active sonar with cylindrical array for passive monitoring of underwater sound sources. It is demonstrated that detecting a sound source and determining its bearings may be carried out with no changes in the ...
J. Marszal +4 more
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Research on submarine underwater acoustic effectiveness against airborne sonar [PDF]
Zhihui kongzhi yu fangzhen, 2023 To get the best strategy of submarine underwater acoustic countermeasure against active/passive airborne sonar in normal conditions, this paper constructs the underwater acoustic environment model, sonar detection model and submarine underwater acoustic ...
KANG Le, SUN Baosan, ZHANG Weili
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Automatic target recognition of surface vessels in passive sonar using emerging technologies of artificial intelligence and deep learning [PDF]
آیندهپژوهی دفاعی, 2023 Objective: Artificial intelligence is a part of computer science that emphasizes the creation of intelligent machines in defense equipment and military equipment.
hassan akbarian +1 more
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Research on Submarine Search Technology of Maneuver Avoidance with Ship and Aircraft Coordination [PDF]
Hangkong bingqi, 2021 In order to avoid the low efficiency of submarine search by single-base hoisting sonar, a combined dual-base searching method of towed sonar and helicopter hoisting sonar is introduced.
Ju Jianbo, Yu Hongbo, Liu Min, Yang Shaowei
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Journal of Marine Science and Engineering, 2022 Effective testing of new sensing technologies requires realistic yet deterministic test ranges. The advancements in customizable, adaptive unmanned surface vessels (USV) have contributed to the increasing presence of USVs completing maritime site ...
Kainani Santos, A Zachary Trimble
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IEEE Access, 2022 This paper handles tracking a ground target using a single passive sonar sensor measuring doppler shift of the target. We consider a scenario where the frequency of the emitting tone is not known in advance.
Jonghoek Kim
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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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