Results 1 to 10 of about 23,037 (220)

Passive Sonar Target Identification Using Multiple-Measurement Sparse Bayesian Learning [PDF]

open access: yesSensors, 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
doaj   +2 more sources

Passive Sonar Target Detection Using Statistical Classifier and Adaptive Threshold

open access: yesApplied Sciences, 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.
Hamed Komari Alaie, Hassan Farsi
doaj   +3 more sources

Direction of Arrival Estimation Using Two Hydrophones: Frequency Diversity Technique for Passive Sonar [PDF]

open access: yesSensors, 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
doaj   +2 more sources

Particle Filter-Guided Online Neural Networks for Multi-Target Bearing-Only Tracking in Passive Sonar Systems [PDF]

open access: yesSensors
This 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
doaj   +2 more sources

Passive sonar with cylindrical array

open access: yesArchives 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
doaj   +1 more source

Research on submarine underwater acoustic effectiveness against airborne sonar [PDF]

open access: yesZhihui 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
doaj   +1 more source

Automatic target recognition of surface vessels in passive sonar using emerging technologies of artificial intelligence and deep learning [PDF]

open access: yesآینده‌پژوهی 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
doaj   +1 more source

Research on Submarine Search Technology of Maneuver Avoidance with Ship and Aircraft Coordination [PDF]

open access: yesHangkong 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
doaj   +1 more source

Quantifying Efforts to Mitigate Interference between an Unmanned Surface Vessel and Starfish 990F for the Identification of Underwater Features in the Littoral Zone

open access: yesJournal 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
doaj   +1 more source

Tracking a Ground Target Utilizing Doppler-Only Measurements of a Single Passive Sonar Sensor Assisted by Straight Road Constraints

open access: yesIEEE 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
doaj   +1 more source

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