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Sea trial of flow noise of fiber laser hydrophone array
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Paper Abstract

Towed linear array array based on fiber laser hydrophone which had much research potentiality owing to its higher acoustic pressure sensitivity, smaller size and lower difficulty of multiplexing. Flow noise is one of the main sources of noise in the towed linear array system. It will compress the dynamic range of fiber laser hydrophone and reduce the detection ability to small signal. In this paper, the structure of a 4 channel fiber laser hydrophone towed linear array was presented, and the data of sea trial of flow noise was analyzed. The results shows that the influence of flow noise mainly concentrate on the low frequency band which under 500Hz, and the background noise level has increased nearly 70-80dB when the array is towed at the speed of 3 kn.

Paper Details

Date Published: 12 December 2018
PDF: 8 pages
Proc. SPIE 10844, Advanced Laser Technology and Applications, 108440Z (12 December 2018); doi: 10.1117/12.2505565
Show Author Affiliations
Ge-yang Hao, Xi'an Institute of Optics and Precision Mechanics (China)
Qi Li, Xi'an Institute of Optics and Precision Mechanics (China)
Bo Liu, Xi'an Institute of Optics and Precision Mechanics (China)
Wei Liu, Xi'an Institute of Optics and Precision Mechanics (China)
Guo-jun Wu, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10844:
Advanced Laser Technology and Applications
Shibin Jiang; Lijun Wang; Zejin Liu; Wei Shi; Pu Zhou, Editor(s)

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