| 彭承彦,马树青,熊水东,黄良金,孟洲.一种基于声压和加速度的矢量水听器定向方法[J].声学技术,2017,36(4):394~398 |
| 一种基于声压和加速度的矢量水听器定向方法 |
| A pressure-acceleration based orientation method for vector hydrophone |
| 投稿时间：2016-10-20 修订日期：2017-03-09 |
| DOI：10.16300/j.cnki.1000-3630.2017.04.017 |
| 中文关键词: 矢量水听器 目标定向 加速度 复声强器 |
| 英文关键词: acoustic vector sensor target orientation acceleration complex intensity processor |
| 基金项目:863项目（2013AA09A412-1）、国防科学技术大学重大应用基础研究项目（ZDYYJCYJ20140701）资助 |
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| 中文摘要: |
| 根据远场条件下水中声波的加速度和振速方向相同、相位相差π/2的特点，给出了一种加速度型矢量水听器的目标定向方法。基本原理是先计算声压与水平加速度和垂直加速度的互谱，再将互谱的虚部相除，最后求反正切得到目标的方位。相比于常规的复声强器，该方法省略了从加速度转变成振速的积分过程，降低了对滤波器的要求、减少了计算量，具有简单、易于工程实现等优点。光纤矢量水听器的湖上试验数据表明，基于声压和加速度的定向方法与复声强器具有相似的定向性能。 |
| 英文摘要: |
| Based on the fact that the acceleration and velocity of underwater acoustic wave in far field has the same direction and a π/2 phase difference, this paper proposes a target orientation method for acceleration type vector hydrophone. The basic principle is:first to calculate the cross-spectrum between pressure and horizontal acceleration as well as the cross-spectrum between pressure and vertical acceleration; then to divide the imaginary part of the first cross-spectrum by the imaginary part of the next one, and finally to find the target direction by taking the arctangent of the quotient. Compared to conventional complex intensity processor, the new method is simple and easy to implement since the integration from acceleration to velocity is no longer needed, which reduces the requirement of filtering. Lake experiment data of optical fiber vector hydrophone show that the new method has similar orientation performance in comparison with the complex intensity processor. |
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