一种非消声环境下目标辐射声功率测试方法
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- 英文论文题名：A method for testing radiated sound power in non-anechoic environment
- 论文作者：高守勇 ; 余华兵 ; 杨晶 ; 郭娜
- 英文论文作者：GAO Shou-yong ; YU Hua-bing ; YANG Jing ; GUO Na ; 91388 team 95 unit ; Chinese Academy of Science ; APPSOFT Technolygy Co. ; Ltd.
- 年：2016
- 作者机构：91388部队95分队;中国科学院声学研究所;北京神州普惠科技股份有限公司;
- 论文关键词：声强法 ; 辐射声功率 ; 非消声环境 ; 矢量水听器
- 英文论文关键词：sound intensity technology ; radiated sound power ; non-anechoic environment ; vector hydrophone
- 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：TB524
- 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：4
- 文件大小：388k
- 原文格式：D
- 会议级别：全国
摘要
在低频情况下,针对常规水池或湖上声功率测试很难满足自由场条件的问题,本文提出一种在非消声环境下测量目标辐射声功率的方法。在未经消声处理的水池内采用矢量水听器测量标准声源的辐射声功率,并与在消声水池下测量的结果进行了比较。经试验验证表明,声强法测量辐射声功率的均方根误差可控制在1.5d B以内,可通过误差修正保证测量结果的精度要求。本文的结论对非消声环境下采用矢量水听器测量静止小目标或模型辐射噪声具有现实的指导意义。
For the problem of difficulty to meet the free-field conditions on acoustic power test in conventional pool or lake in low frequencies, this article proposes a method of measuring the radiated acoustic power in a non-anechoic environment. Test for radiated acoustic power of standard sound source by using the vector hydrophone is done inside the pool without a muffler treated. And test results are compared with done in anechoic pool. The test verification shows that RMS error tested through Sound intensity measurement of radiated acoustic power could be controlled within 1.5d B. And the accuracy of test results could be ensured by error correction. The conclusion of this article has a practical significance on vector hydrophone tests of small stationary targets or radiated noise model in non-anechoic environment.
For the problem of difficulty to meet the free-field conditions on acoustic power test in conventional pool or lake in low frequencies, this article proposes a method of measuring the radiated acoustic power in a non-anechoic environment. Test for radiated acoustic power of standard sound source by using the vector hydrophone is done inside the pool without a muffler treated. And test results are compared with done in anechoic pool. The test verification shows that RMS error tested through Sound intensity measurement of radiated acoustic power could be controlled within 1.5d B. And the accuracy of test results could be ensured by error correction. The conclusion of this article has a practical significance on vector hydrophone tests of small stationary targets or radiated noise model in non-anechoic environment.
引文
[1]Wolff I,Massa F.Direct measurement of sound energy density and sound energy flux in a complex sound field.J.Acoust.Amer.,1932,3:317-318
[2]Baker S.Acoustic intensity meter.J.Acoust.Soc.Amer.,1955,27:269-273
[3]Chung J Y,Pope J.Practical measurement of acoustic intensity-the two microphone cross spectral method.Proceedings of inier-noise 78,1978,893-900
[4]Fahy F J.Measurenmt of acoustic intensity using the cross spectral density of two microphone signals.J.Acoust,Soe.Amer.,1977,62(4):1057-1059
[5]Alfredson R J.A new technique for noise source identification on a multicylinder automotive engine.Proceedings of Noise-Con77,1977,307-318
[6]KOZACZKA E.Measuring of underwater noise produced by a ship by means of the intensity method in the shallow sea[C]//UDT 1993.Cannes,France,1993,518-520
[7]GLOZA I.Tracking the underwater noise source using a vector sound-intensity probe[J].Acta Acoustica United with Acustica,2002,88(5):670-673
[8]张谷香,王怀应.水声声强测量分析系统及其在水下噪声鉴别中的应用.应用声学,1996,15(4):33-36.ZHANG Guxiang,WANG Huaiying.An underwater sound intensity measurement system and its application in location and identification of underwater noise sources[J].Applied Acoustics,1996,15(4):33-36.
[9]张林,杨德森.声强测量系统用双水听器的校准方法研究[J].哈尔滨工程大学学报,2002,23(4):1-4.ZHANG Lin,YANG Desen.Calibration of Bi-hydrophone Used in Acoustic Intensity Measurement System[J].Journal of Harbin Engineering University,2002,23(4):1-4.
[10]何祚镛.实船设备结构振动和水声声强测试分析及噪声源的判别[J].中国造船,2003,44(4):50-58.HE Zuoyong.Measurements of Vibration and Underwater Noise Intensity of a Ship and Identif ication of Main Exciting Sources[J].Shiphuilding of China,2003,44(4):50-58.
[11]周庆云,高岩,刘忠族.声强法在水下结构声源识别中的应用.第十三届船舶水下噪声学术讨论会,2011,426-432.ZHOU Qingyun,GAO Yan,LIU Zhongzu.Highlight model of echoes from sonar targets[J].The 13th Symposinm of marine underwater noise,2011,426-432.
[12]杨文林,彭伟才,张俊杰.非消声水池声强法声功率测试的数值模拟.中国舰船研究,2012,7(2):91-96.YANG Wenlin,PENG Weicai,ZHANG Junjie.Numerical Investigation of Radiated Sound Power by Sound Intensity Technology in Non-Anechoic Tank,2012,7(2):91-96.
[2]Baker S.Acoustic intensity meter.J.Acoust.Soc.Amer.,1955,27:269-273
[3]Chung J Y,Pope J.Practical measurement of acoustic intensity-the two microphone cross spectral method.Proceedings of inier-noise 78,1978,893-900
[4]Fahy F J.Measurenmt of acoustic intensity using the cross spectral density of two microphone signals.J.Acoust,Soe.Amer.,1977,62(4):1057-1059
[5]Alfredson R J.A new technique for noise source identification on a multicylinder automotive engine.Proceedings of Noise-Con77,1977,307-318
[6]KOZACZKA E.Measuring of underwater noise produced by a ship by means of the intensity method in the shallow sea[C]//UDT 1993.Cannes,France,1993,518-520
[7]GLOZA I.Tracking the underwater noise source using a vector sound-intensity probe[J].Acta Acoustica United with Acustica,2002,88(5):670-673
[8]张谷香,王怀应.水声声强测量分析系统及其在水下噪声鉴别中的应用.应用声学,1996,15(4):33-36.ZHANG Guxiang,WANG Huaiying.An underwater sound intensity measurement system and its application in location and identification of underwater noise sources[J].Applied Acoustics,1996,15(4):33-36.
[9]张林,杨德森.声强测量系统用双水听器的校准方法研究[J].哈尔滨工程大学学报,2002,23(4):1-4.ZHANG Lin,YANG Desen.Calibration of Bi-hydrophone Used in Acoustic Intensity Measurement System[J].Journal of Harbin Engineering University,2002,23(4):1-4.
[10]何祚镛.实船设备结构振动和水声声强测试分析及噪声源的判别[J].中国造船,2003,44(4):50-58.HE Zuoyong.Measurements of Vibration and Underwater Noise Intensity of a Ship and Identif ication of Main Exciting Sources[J].Shiphuilding of China,2003,44(4):50-58.
[11]周庆云,高岩,刘忠族.声强法在水下结构声源识别中的应用.第十三届船舶水下噪声学术讨论会,2011,426-432.ZHOU Qingyun,GAO Yan,LIU Zhongzu.Highlight model of echoes from sonar targets[J].The 13th Symposinm of marine underwater noise,2011,426-432.
[12]杨文林,彭伟才,张俊杰.非消声水池声强法声功率测试的数值模拟.中国舰船研究,2012,7(2):91-96.YANG Wenlin,PENG Weicai,ZHANG Junjie.Numerical Investigation of Radiated Sound Power by Sound Intensity Technology in Non-Anechoic Tank,2012,7(2):91-96.