水听器的混响场互易法校准
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- 英文论文题名：Reciprocity calibration of hydrophone in a reverberation pool
- 论文作者：孙俊东 ; 尚大晶 ; 张峻铭
- 英文论文作者：SUN Jun-dong ; SHANG Da-jing ; ZHANG Jun-ming ; Acoustic Science and Technology Laboratory ; Harbin Engineering University
- 年：2016
- 作者机构：哈尔滨工程大学;
- 论文关键词：混响水池 ; 互易校准 ; 空间平均法
- 英文论文关键词：reverberation pool ; space average ; reciprocity calibration method
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TB565.1
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：6
- 文件大小：408k
- 原文格式：D
- 会议级别：全国
摘要
水听器可以在小尺寸的混响水池内进行校准。本文针对水听器的互易校准法,提出了一种在混响水池中采用空间平均法进行校准的方法。该方法可以避免了水池内直达声的作用,并消除简正波的影响得到混响场内声学参数,适用于小尺寸的混响水池。校准相同频率范围的水声换能器参数,需要的混响水池体积比消声水池体积小得多。根据水听器的校准频率范围选择适当的校准混响水池尺寸,测定混响水池的混响时间确定混响场的互易常数,采用声源发射单频连续正弦信号,将发射换能器和接收换能器在混响区域内进行空间平均,得到相应电学参量,进而计算得到待测水听器的接收灵敏度。本文进行了详细的实验描述和结果分析,通过对水听器校准结果与其出厂自由场校准结果进行对比,测量误差不超过1.0d B,A类不确定度不超过0.13d B,由此证明了该方法的可行性。
A new hydrophone reciprocity calibration mothod was put forward in this paper. This calibration was finished by the space-averaging in the reverberation pool, and the influence of normal mode interference was eliminated, so the reverberation field acoustic parameters were obtained in the reverberation pool. The calibration can be set up in a small reverberation pool. In case of the same frequency range acoustic transducer calibration, the reverberation pool for reverberation method reciprocity calibration can be smaller than the free-field pool for free-field reciprocity calibration. According to the hydrophone calibration frequency range, select the appropriate calibration reverberation tank size. The reverberation field reciprocity constant was determined by measuring the reverberation time, the single-frequency sine signal was emission by the sound source higher than the cutoff frequency, the transmitting transducer and receiving transducer was space-averaged in the area of the reverberation, and the corresponding electrical parameters were obtained, so the receiving sensitivity for the testing hydrophone was calculated. The testing and the results of the reverberation calibration are presented in this paper. The error between the hydrophone calibration by the reverberation method and the factory free field calibration was less than 1.0d B, and the A kind of measuring uncertainty is less than 0.13 d B. This method can be applied to all kinds of hydrophones and transducer calibration.
A new hydrophone reciprocity calibration mothod was put forward in this paper. This calibration was finished by the space-averaging in the reverberation pool, and the influence of normal mode interference was eliminated, so the reverberation field acoustic parameters were obtained in the reverberation pool. The calibration can be set up in a small reverberation pool. In case of the same frequency range acoustic transducer calibration, the reverberation pool for reverberation method reciprocity calibration can be smaller than the free-field pool for free-field reciprocity calibration. According to the hydrophone calibration frequency range, select the appropriate calibration reverberation tank size. The reverberation field reciprocity constant was determined by measuring the reverberation time, the single-frequency sine signal was emission by the sound source higher than the cutoff frequency, the transmitting transducer and receiving transducer was space-averaged in the area of the reverberation, and the corresponding electrical parameters were obtained, so the receiving sensitivity for the testing hydrophone was calculated. The testing and the results of the reverberation calibration are presented in this paper. The error between the hydrophone calibration by the reverberation method and the factory free field calibration was less than 1.0d B, and the A kind of measuring uncertainty is less than 0.13 d B. This method can be applied to all kinds of hydrophones and transducer calibration.
引文
[1]郑士杰,袁文俊等.水声计量测试技术[M].哈尔滨:哈尔滨工程大学出版社.1995.1:28-72.
[2]吴文虬,沈保罗,周纪浔,张学真.在扩散声场中水听器的互易校准[J],南京大学学报(物理版),1963,2:151-152.
[3]马大猷.现代声学理论基础[M].北京:科学出版社,2004,179-204.
[4]Dab-You Maa.Sound power emission in reverberation chambers[J].JASA.1988,84(4):1414-1419.
[5]马大猷.论室内声场[J].声学学报,2003,28(02):97-101.
[6]唐锐.水下壳体结构低频声辐射预报方法与试验测试技术研究[D].哈尔滨:哈尔滨工程大学,2013.
[7]尚大晶,李琪,商德江,侯本龙.水下声源辐射声功率测量实验研究[J].哈尔滨工程大学学报,2010,31(7):938-944.SHANG Dajing,LI Qi,SHANG Dejiang,Hou Benlong.Measurement of the radiated power of sound sources in a reverberation pool[J].Journal of Harbin Engineer University,2010,31(7):938-944.
[2]吴文虬,沈保罗,周纪浔,张学真.在扩散声场中水听器的互易校准[J],南京大学学报(物理版),1963,2:151-152.
[3]马大猷.现代声学理论基础[M].北京:科学出版社,2004,179-204.
[4]Dab-You Maa.Sound power emission in reverberation chambers[J].JASA.1988,84(4):1414-1419.
[5]马大猷.论室内声场[J].声学学报,2003,28(02):97-101.
[6]唐锐.水下壳体结构低频声辐射预报方法与试验测试技术研究[D].哈尔滨:哈尔滨工程大学,2013.
[7]尚大晶,李琪,商德江,侯本龙.水下声源辐射声功率测量实验研究[J].哈尔滨工程大学学报,2010,31(7):938-944.SHANG Dajing,LI Qi,SHANG Dejiang,Hou Benlong.Measurement of the radiated power of sound sources in a reverberation pool[J].Journal of Harbin Engineer University,2010,31(7):938-944.