Design and analysis of a multiple sensor units vector hydrophone

Inspired by the hairy structure of fish neuromast, a multiple sensor units (multi-unit) vector hydrophone is proposed in the paper, which integrates multiple sensor units on one chip according to bionics. Its sensitivity and signal noise ratio (SNR) are theoretically analyzed compared with the hydro...

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Bibliographic Details
Published in:AIP advances 2018-08, Vol.8 (8), p.085124-085124-9
Main Authors: Zhang, Xiaoyong, Xu, Qingda, Zhang, Guojun, Shen, Nixing, Shang, Zhenzhen, Pei, Yu, Ding, Junwen, Zhang, Lansheng, Wang, Renxin, Zhang, Wendong
Format: Article
Language:English
Subjects:
Bionics
Correlation analysis
Defense industry
Fast Fourier transformations
Fourier transforms
Noise sensitivity
Sensitivity analysis
Sensors
Signal to noise ratio
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Summary:Inspired by the hairy structure of fish neuromast, a multiple sensor units (multi-unit) vector hydrophone is proposed in the paper, which integrates multiple sensor units on one chip according to bionics. Its sensitivity and signal noise ratio (SNR) are theoretically analyzed compared with the hydrophone which has only one sensor unit. In order to verify the correctness of the theory, a 4-unit vector hydrophone has been fabricated. For experiments, the comparative calibration experiment is used to validate the theoretical analysis of sensitivity and fast fourier transform algorithm (FFT) is used to process the experiment data to verify the theoretical analysis of SNR. The results show that the sensitivity of the 4-unit hydrophone is improved by 11.8 dB and the SNR is improved by 1.9 dB on average, which is correlated with the theoretical analysis.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5044673