变温变压环境中大面积水听器灵敏度低频校准方法

doi:10.3969/j.issn.1000-1158.2021.09.11

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Abstract In view of the lack of sensitivity calibration means of low-frequency large-planar hydrophone in variable temperature and pressure environment, a semi-traveling-wave tube method is proposed. By controlling the transducers at the extremes of the tube, a traveling-wave champ is generated on one side of the hydrophone. On the other side, there is a standing-wave champ. The general expression of the sensitivity is deduced. Under normal temperature and pressure, the calibration results are in good agreement with the traditional low-frequency calibration method, which proves that this method can effectively calibrate the sensitivity of large-planar hydrophone. The calibration results of hydrophone sensitivity under different temperature and pressure environment show that this method is feasible to calibrate hydrophone under variable temperature and pressure, and provides a method for the calibration of hydrophone sensitivity in larg-planar. The uncertainty of measurement is evaluated, the expanded uncertainty is 3dB.

Key words： metrology hydrophone traveling-wave tube low-frequency calibration sensitivity

Received: 21 April 2020 Published: 24 September 2021

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TB95

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	Articles by authors
	TONG Hao-yang
	YI Yan
	LI Shui
	CHEN Yi
	ZHAO Han

Cite this article:

TONG Hao-yang,YI Yan,LI Shui, et al. Low-frequency Calibration of Sensitivity of Large-planar Hydrophones in Dynamic Environment of Pressure and Temperature[J]. Acta Metrologica Sinica, 2021, 42(9): 1187-1192.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.09.11 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I9/1187

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