Laser adaptive fiber-optic hydrophone

Romashko, Roman V.; Bezruk, M. N.; Ermolaev, S. A.; Zavestovskaya, I. N.; Kulchin, Yu. N.

doi:10.3103/s1068335615070027

Cited by 11 publications

(3 citation statements)

References 7 publications

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“…Such technique allows to successfully apply the adaptive interferometers for measuring weak signals under the conditions of influence of external noise factors such as random mechanical impacts, industrial noisy sound and vibrations, temperature or pressure drift, etc [12][13][14][15][16][17][18]. Adaptive interferometers were being already applied for acoustic and hydroacoustic measurements [19][20][21][22][23], including use of scalar-vector methods for detection of an acoustic signal [24,25]. In the paper [25], the adaptive laser scalar-vector hydroacoustic measuring system which provides determination of full vector of acoustic intensity is proposed.…”

Section: Introductionmentioning

confidence: 99%

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Romashko¹,

Storozhenko²,

Bezruk³

et al. 2022

Laser Phys.

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A mobile scalar–vector acoustic receiver is proposed, experimentally implemented and investigated. The key components of the receiver are (a) the six-channel fiber-optic coil-type sensor configured as to detect three projections of acoustic intensity vector, (b) the six-channel optical phase demodulator based on six-channel adaptive holographic interferometer configured with use of dynamic holograms multiplexed in a photorefractive crystal of cadmium telluride and (c) the signals recording ADC-based system combined with software package for data processing. Field tests of the developed receiver applied for obtaining scalar and vector parameters of acoustic waves generated by a stationary and moving acoustic source in open air and water area are carried out. Experimental results show perceptiveness of use of the fiber-optical adaptive interferometry system for bearing of weak acoustic sources in real conditions.

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Section: Introductionmentioning

confidence: 99%

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Romashko¹,

Storozhenko²,

Bezruk³

et al. 2022

Laser Phys.

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show abstract

“…[12][13][14][15][16][17][18]. Adaptive interferometers were being already applied for acoustic and hydroacoustic measurements [19][20][21][22][23], including use of scalar-vector methods for detection of an acoustic signal [24,25]. In the paper [25], the adaptive laser scalarvector hydroacoustic measuring system which provides determination of full vector of acoustic intensity is proposed.…”

Section: Introductionmentioning

confidence: 99%

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Romashko,

Storozhenko,

Bezruk

et al. 2021

Preprint

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A mobile scalar-vector acoustic receiver is proposed, experimentally implemented and investigated. The key components of the receiver are (i) the six-channel fiber-optic coil-type sensor configured as to detect three projections of acoustic intensity vector, (ii) the six-channel optical phase demodulator based on six-channel adaptive holographic interferometer configured with use of dynamic holograms multiplexed in a photorefractive crystal of cadmium telluride and (iii) the signals recording ADC-based system combined with software package for data processing. Field tests of the developed receiver applied for obtaining scalar and vector parameters of acoustic waves generated by a stationary and moving acoustic source in open air and water area are carried out. Experimental results show perceptiveness of use of the fiber-optical adaptive interferometry system for bearing of weak acoustic sources in real conditions.

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“…In existing research, many scholars have achieved different noise reduction effects. In 2015, Romashk R. V. et al [4] proposed and studied the implementation of an adaptive fiber-optic hydrophone with a membrane fiber sensor as the sensitive component. The experimental results show that the scheme improves the noise immunity and sensitivity of the hydrophone.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Noise Reduction Effect of Fiber Optic Hydrophone Based on LMS and NLMS Algorithm

Cai

2020

Sensors

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Adaptive filtering has the advantages of real-time processing, small computational complexity, and good adaptability and robustness. It has been widely used in communication, navigation, signal processing, optical fiber sensing, and other fields. In this paper, by adding an interferometer with the same parameters as the signal interferometer as the reference channel, the sensing signal of the interferometric fiber-optic hydrophone is denoised by two adaptive filtering schemes based on the least mean square (LMS) algorithm and the normalized least mean square (NLMS) algorithm respectively. The results show that the LMS algorithm is superior to the NLMS algorithm in reducing total harmonic distortion, improving the signal-to-noise ratio and filtering effect.

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Laser adaptive fiber-optic hydrophone

Cited by 11 publications

References 7 publications

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Fiber-optic vector acoustic receiver based on adaptive holographic interferometer

Comparative Study on Noise Reduction Effect of Fiber Optic Hydrophone Based on LMS and NLMS Algorithm

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