A 64-element fiber laser hydrophone flank array

Hongcan Gu; Junbin Huang; Gaofei Yao; Jing Wu; Bo Tang; Xin Mao

doi:10.1117/12.2587710

12 March 2021 A 64-element fiber laser hydrophone flank array

Hongcan Gu, Junbin Huang, Gaofei Yao, Jing Wu, Bo Tang, Xin Mao

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 117639G (2021) https://doi.org/10.1117/12.2587710
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

The flank array of fiber laser hydrophone takes the fiber laser hydrophone as the sensitive element. A new type of fiber laser hydrophone with double diaphragms is designed, the results of anechoic tank test show that the average sound pressure sensitivity of fiber laser hydrophone is -136.9dB in the middle and high frequency range of 2.5 ~ 10kHz, and the fluctuation amplitude of sensitivity is not more than ±0.5dB. Taking the hydrophone as the sensing unit, a 64-element fiber laser hydrophone flank array is constructed based on wavelength division / time division multiplexing technology and passive homodyne interference detection technology. The lake test shows that the beam forming of the flank array is stable, the target bearing estimation is correct, and the root mean square error of horizontal target bearing estimation is 1.68°.

Citation Download Citation

Hongcan Gu, Junbin Huang, Gaofei Yao, Jing Wu, Bo Tang, and Xin Mao "A 64-element fiber laser hydrophone flank array", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 117639G (12 March 2021); https://doi.org/10.1117/12.2587710

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