A Method of Extracting Underwater Acoustic Beaconing Signal

Deng, Leilei; Xie, Zhao; Yin, Bingjie

doi:10.1109/coa50123.2021.9519864

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…Make the signal input into the single Duffing oscillator chaos sensing system as f(t), f (t) = Acos[(ω + �ωt) + ϕ] , �ω is the frequency difference between the signal input into the chaotic sensing system and the periodic force between the chaotic system, �ω ≪ ω , ϕ is the phase difference. At this time, the state equation of single Duffing oscillator system can be expressed as [41,47,48]…”

Section: Intermittent Chaos Of Single Duffing Oscillatormentioning

confidence: 99%

A practical underwater information sensing system based on intermittent chaos under the background of Lévy noise

Zhang

Qin

Zhang

et al. 2022

J Wireless Com Network

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Nowadays, the increasingly complex and changeable marine environment makes the signals received by the underwater sensing equipment not only contain the weak signals radiated by underwater targets but also accompanied by marine solid background noise, which leads to the degradation and distortion of underwater acoustic signals and the decline of underwater communication quality. Under the severe influence of ocean noise, the underwater acoustic sensing and acquisition system will have the problems of high SNR ratio threshold, minimal sensing bandwidth, and unable to sense the signal with unknown frequency effectively. The Lévy noise model has been selected to describe the marine noise environment and explain its scientificity in this paper. A parameter estimation method for Lévy noise is proposed. Under the condition of characteristic index $$\alpha =1.5$$ α = 1.5 and noise intensity $$D=0.1$$ D = 0.1 of the Lévy noise model, the estimated mean values of parameters are 1.5026 and 1.1664. The estimated variances are 0.0034 and 0.0046, which proves the effectiveness and applicability of the estimation method. Then, an improved dual-coupled Duffing oscillator sensing system is proposed to sense the weak signals with unknown frequency under Lévy noise. Under the background of Lévy with characteristic index $$\alpha =1.5$$ α = 1.5 , deflection parameter $$\beta =0$$ β = 0 and noise intensity $$D=0.1$$ D = 0.1 , the sensing error rate of our system with unknown frequency is $$0.054\%$$ 0.054 % , the lowest sensing signal amplitude is $$A=0.010$$ A = 0.010 , the lowest sensing SNR ratio is − 23.9254 dB, and the frequency of multi-frequency weak signals to be measured can be obtained. The estimation error of frequency sensing is $$0.33\%$$ 0.33 % .

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Section: Intermittent Chaos Of Single Duffing Oscillatormentioning

confidence: 99%

A practical underwater information sensing system based on intermittent chaos under the background of Lévy noise

Zhang

Qin

Zhang

et al. 2022

J Wireless Com Network

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show abstract

“…Frogmen carry acoustic beacons that cannot interfere with the various operational activities they perform underwater. In this way, under the condition that the volume and weight are exceptionally constrained, ensuring a higher source level and better directivity becomes the difficulty and key to the design of acoustic beacon technology [2] [3]. To this end, this paper proposes a small transponder-type acoustic beacon that is easy to carry.…”

Section: Acoustic Beacon Positioning Performance Requirementsmentioning

confidence: 99%

Implementation and experimental validation of underwater measurement and positioning technology based on small transponder acoustic beacons

Li¹,

Li²,

Cui³

2022

Second International Conference on Testing Technology and Automation Engineering (TTAE 2022)

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Location of Acoustic Beacon with Passive Sonar system : A Comprehensive Analysis

et al. 2024

2024 IEEE International Students' Conference on Electrical, Electronics and Computer Science (SCEECS)

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A Method of Extracting Underwater Acoustic Beaconing Signal

Cited by 3 publications

References 1 publication

A practical underwater information sensing system based on intermittent chaos under the background of Lévy noise

A practical underwater information sensing system based on intermittent chaos under the background of Lévy noise

Implementation and experimental validation of underwater measurement and positioning technology based on small transponder acoustic beacons

Location of Acoustic Beacon with Passive Sonar system : A Comprehensive Analysis

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