A New Detecting Method for Underwater Acoustic Weak Signal Based on Differential Double Coupling Oscillator

Li, Guohui; Cui, Jiuyang; Yang, Huirong

doi:10.1109/access.2021.3052057

Cited by 22 publications

(15 citation statements)

References 29 publications

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“…The paper [19] explores the possibility of using 5G multicarrier chaotic sequence spread spectrum technology for underwater acoustic communications. The generalized frequency division multiplexing-chaotic sequence spread spectrum (GFDM-CSSS) technology was used as a modulation method.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Simulation of BER Performance of Chaotic Underwater Wireless Optical Communication Systems

Bender¹,

Tarasenko²,

Samonova³

et al. 2023

Nelin. Dinam.

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Section: Introductionmentioning

confidence: 99%

Analysis and Simulation of BER Performance of Chaotic Underwater Wireless Optical Communication Systems

Bender¹,

Tarasenko²,

Samonova³

et al. 2023

Nelin. Dinam.

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“…Detecting weak signals submerged by strong noise has been extensively applied in hazardous gas monitoring [1], communication systems [2,3], electroencephalogram (EEG) signal processing [4], underwater vehicle detection [5][6][7][8], bearing fault diagnosis [9][10][11][12], and other scenarios. In these applications, researchers have studied many theoretical analysis tools and practical weak signal processing methods to extract * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

“…Hu et al designed a new 3D chaotic system [7] to detect ship-radiated signals. The literature [8] proposed a coupled differential Duffing system to estimate the frequency characteristics of ship-radiated noise. To address the demand of gearbox fault diagnosis, Wang et al proposed a multi-objective optimization-based adaptive variational mode decomposition (VMD) method [9].…”

Section: Introductionmentioning

confidence: 99%

“…The traditional weak periodic signal detection methods based on the Duffing oscillator mentioned above usually focus on the known frequency target signals. However, in underwater vehicle acoustic signal detection applications [8,26] and other circumstances, the frequency of a weak signal is an important parameter that reflects the operating state of the target research object. Therefore, to address the issue of weak signal frequency estimation, an effective detection method is urgently needed.…”

Section: Introductionmentioning

confidence: 99%

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Automated weak signal frequency estimation method based on Duffing oscillator and particle swarm optimization

Wang¹,

Cheng²,

Wang³

et al. 2022

Meas. Sci. Technol.

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The frequency of a weak signal is used for fault diagnosis and target identification in various fields. By introducing particle swarm optimization (PSO) and spectral entropy (SE), an automated weak signal frequency estimation method based on the Duffing oscillator is proposed. The proposed method uses the differential structure to enhance the timing difference of the Duffing oscillator between the chaotic and large-scale periodic states, which is quantitatively distinguished by SE. Then, the frequency of the internal driving force is adaptively adjusted by the PSO to allow the SE to reach a minimum value where the driving frequency equals the weak signal frequency. A group of weak signals with different frequencies has been tested. The maximum relative frequency error is only 0.68%. Unlike other chaotic oscillator-based frequency estimation methods, the proposed method does not need to determine the phase state manually. A rough initial frequency search range is sufficient for automatic frequency measurement of the proposed method in this paper.

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“…There has always been an interest in designing sinusoidal oscillators due to several applications in different areas such as communication, instrumentation, biomedical, etc. [1][2][3]. Compared to LC and RLC sinusoidal oscillators, RC-active type oscillators are advantageous from the integration point of view.…”

Section: Introductionmentioning

confidence: 99%

A New VCII Application: Sinusoidal Oscillators

Stornelli

Barile

Pantoli

et al. 2021

JLPEA

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The aim of this paper is to prove that, through a canonic approach, sinusoidal oscillators based on second-generation voltage conveyor (VCII) can be implemented. The investigation demonstrates the feasibility of the design results in a pair of new canonic oscillators based on negative type VCII (VCII−). Interestingly, the same analysis shows that no canonic oscillator configuration can be achieved using positive type VCII (VCII+), since a single VCII+ does not present the correct port conditions to implement such a device. From this analysis, it comes about that, for 5-node networks, the two presented oscillator configurations are the only possible ones and make use of two resistors, two capacitors and a single VCII−. Notably, the produced sinusoidal output signal is easily available through the low output impedance Z port of VCII, removing the need for additional voltage buffer for practical use, which is one of the main limitations of the current mode (CM) approach. The presented theory is substantiated by both LTSpice simulations and measurement results using the commercially available AD844 from Analog Devices, the latter being in a close agreement with the theory. Moreover, low values of THD are given for a wide frequency range.

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A New Detecting Method for Underwater Acoustic Weak Signal Based on Differential Double Coupling Oscillator

Cited by 22 publications

References 29 publications

Analysis and Simulation of BER Performance of Chaotic Underwater Wireless Optical Communication Systems

Analysis and Simulation of BER Performance of Chaotic Underwater Wireless Optical Communication Systems

Automated weak signal frequency estimation method based on Duffing oscillator and particle swarm optimization

A New VCII Application: Sinusoidal Oscillators

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