中频三轴向矢量水听器的研究

Study on a medium three dimensional co-oscillating vector hydrophone

根据实际工程需要,设计、制作三轴向中频矢量水听器,其声压通道和矢量通道在结构上结合为一体,外形为两端带半球帽的圆柱形结构。矢量水听器体积为Ф44×88(mm)、工作频带为5 Hz～8 kHz。在驻波管和消声水池中对研制的矢量水听器进行了测试,测试结果表明:矢量通道的声压灵敏度级为-184 dB(测量频率1 kHz,0 dB参考值1V/μPa),具有余弦指向性;声压通道灵敏度级为-198 dB(0 dB参考值1 V/μPa)。研制的矢量水听器具有体积小、通道灵敏度高、使用时悬挂方便等优点,适合构建矢量水听器线阵。

A medium three dimensional co-oscillating vector hydrophone combined with pressure channels and vector channels was designed and accomplished according to practical engineering requirement.The shape of the vector hydrophone is a cylinder with two calottes.The size is Ф44×88（mm）,and the working frequency range is from 5Hz to 8kHz.Its performance was measured in both standing wave pipe and anechoic lab.The result of experimentation indicates that the pressure sensitivity of vector channels is-184dB（measuring frequency： 1kHz,0dB re 1V/μPa）with direction performance of cosine,and the pressure sensitivity of pressure channels is-198dB（0dB re 1V/μPa）.The vector hydrophone has higher sensitivity,smaller volume,and is comfortable for hanging and constructing vector hydrophone array.