变温变压环境中大面积水听器灵敏度低频校准方法

佟昊阳; 易燕; 李水; 陈毅; 赵涵

doi:10.3969/j.issn.1000-1158.2021.09.11

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计量学报 ›› 2021, Vol. 42 ›› Issue (9) : 1187-1192. DOI: 10.3969/j.issn.1000-1158.2021.09.11

声学计量

变温变压环境中大面积水听器灵敏度低频校准方法

佟昊阳,易燕,李水,陈毅,赵涵

作者信息 +

Low-frequency Calibration of Sensitivity of Large-planar Hydrophones in Dynamic Environment of Pressure and Temperature

TONG Hao-yang,YI Yan,LI Shui,CHEN Yi,ZHAO Han

Author information +

文章历史 +

摘要

针对在变温变压环境中缺少低频大面积水听器灵敏度校准手段的问题,提出了在行波管中校准水听器的半行波管法:将待校准水听器放置于行波管中,通过控制行波管两边的有源终端,在待校准水听器与辅助换能器之间形成行波场,与主发射换能器之间形成驻波场。推导了水听器灵敏度的校准公式。在常温常压环境下,通过与传统低频校准方法的比对,校准结果具有良好的一致性,证明该方法可以有效校准大面积水听器的灵敏度;在不同温度与压力环境下对水听器灵敏度的校准结果,说明了该方法在变温变压条件下校准水听器的可行性,为大面积水听器灵敏度的校准提供了一种方法;对该方法进行了测量不确定度评定,其扩展测量不确定度为3dB。

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.

导出引用

佟昊阳,易燕,李水,陈毅,赵涵. 变温变压环境中大面积水听器灵敏度低频校准方法[J]. 计量学报. 2021, 42(9): 1187-1192 https://doi.org/10.3969/j.issn.1000-1158.2021.09.11

TONG Hao-yang,YI Yan,LI Shui,CHEN Yi,ZHAO Han. 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 https://doi.org/10.3969/j.issn.1000-1158.2021.09.11

中图分类号： TB95

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