唐俊,王同庆,徐百坤.消声水池中弹性球回声的测量与标定[J].声学技术,2007,(3):367~370 |
消声水池中弹性球回声的测量与标定 |
Acoustic reflection measurements and calibration of elastic spheres in an anechoic tank |
投稿时间:2005-12-23 修订日期:2006-03-06 |
DOI: |
中文关键词: 消声水池 弹性球 回声 脉冲 |
英文关键词: anechoic tank elastic sphere acoustic reflection pulse |
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中文摘要: |
在消声水池中对直径范围为2cm~5cm的钢球进行了回声测量。对长脉冲和短脉冲入射声信号的回声信号进行了分析比较。研究了目标的弹性作用在这两种情况下对回声的影响。通过对标准钢球回声测量结果与解析计算结果的比较,检验了消声水池目标回声测量的精度,并为其他非标准目标回声测量提供对比标定的依据。 |
英文摘要: |
Acoustic reflection measurements of steel spheres between 2 and 5 centimeter in diameter have been made in an anechoic tank. Reflected acoustic signals from the targets, using long and short pulses respectively, are analyzed and compared. The influence of the acoustic reflection on the elastic factor of the targets under the two conditions is studied. Accuracy of the target reflection measurement in the anechoic tank has been verified by comparing the measured values of standard steel spheres with theoretically calculated values. Calibration reference is supplied for acoustic reflection measurement of the nonstandard targets. |
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