| 水听器线列阵近场声压测量误差实验研究 |
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| 引用本文： | 楼红伟,姜俊奇,何祚镛.水听器线列阵近场声压测量误差实验研究[J].应用声学,2001,20(3):11-17. |
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| 作者姓名： | 楼红伟 姜俊奇 何祚镛 |
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| 作者单位： | 哈尔滨工程大学水声工程系 |
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| 基金项目： | 国防"九五"计量项目资助 |
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| 摘 要： | 本文介绍了用于近场声压的测量水听器中阵元水听器测量声压的可靠性检验方法和实验结果,提出了元水听器测量球面波场中声传播衰减的曲线与现想球面波声场中场传播衰减的曲线对比的检验,要用球面声源声中心测量值对收发距离进行修正的方法,实验水池中对线列阵上十元水吸器在球形声源水池中进行了传播衰减曲线的测量分析,验证了基阵的弱散散射性能,表明线阵可用于距离小至1／7波长的极近场的扫描测量。
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| 关 键 词： | 水下声压测量 线列阵 近场声传播 水听器 测量误差 |
Experimental study on the measurement error of sound pressure for linear element hydrophone in near field |
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| Lou Hongwei,Jiang Junqi and He Zuoyong.Experimental study on the measurement error of sound pressure for linear element hydrophone in near field[J].Applied Acoustics,2001,20(3):11-17. |
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| Authors: | Lou Hongwei Jiang Junqi and He Zuoyong |
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| Institution: | Underwater Acoustic Dept., Harbin Engineering University, Harbin 150001;Underwater Acoustic Dept., Harbin Engineering University, Harbin 150001;Underwater Acoustic Dept., Harbin Engineering University, Harbin 150001 |
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| Abstract: | This work is to present a method to verify the reliability of the device for the measurement of pressure in near field. We put forward the verifying method of comparing the transmitting attenuation curves in the spherical field measured by the element hydrophone with that in an ideal spherical field. The distance between the source and the hydrophone is revised by the spherical source's center computed by least-squares fit. Trait of weak scattering field is established. So we arrive at the conclusion that this device can scan an extremely near field of range less than one-seventh wavelength. |
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| Keywords: | Underwater acoustic pressure measurement Linear element array Sound transmission in near field |
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