双水听器水声声强测量系统的误差分析和校准

Investigation of a system for underwater sound intensity measurement,their calibration and analysis of measuring error

摘要: 基于双水听器互谱测量法,研制的水声声强测量设备可用于测量水下声源产生的声场中任意点的声强量值或任意面上的声强量值分布。根据双水听器测量声强法原理进行了误差分析,提出了该双水听器声强测量系统的校准方法。对系统测量水声声强量值的不确定度进行了估计并进行了实验验证。验证表明,理论分析评定与实测结果一致。

Abstract: Based on measuring the cross-spectrum density of sound pressure between two hydrophones,the facility for underwater sound intensity measurement is investigated and designed.According to the principle of two-hydrophone method for intensity measurement,the error analysis is done.Given the method of sound intensity measurement calibration for this underwater sound intensity measurement;facility,the uncertainty of intensity measurement by this facility is estimated,It is shown that the analysis and evaluation are agreeable to the experimental results