中频小型矢量水听器设计研究

中频小型同振式矢量水听器采用低密度复合材料作为矢量通道外壳、压电加速度计作为内部振动传感器，以拾取水下声场中的矢量信息。与以往同振式矢量水听器设计不同的是每个矢量通道中只放置一只压电加速度计，这样，不仅减小了矢量水听器的体积，降低了水听器的整体平均密度，而且消除了以往同振式矢量水听器设计中矢量通道采用两只配对传感器而引起的相位不一致给矢量水听器定向带来的影响。而声压通道采用PVDF压电薄膜作为敏感元件，以拾取水下声场中的标量信息。

Design a medium frequency-small size vector hydrophone

A medium frequency-small size vector hydrophone of co-vibrating type is wrapped with low density compound material and in shuck only one piezoelectric ceramic accelerator is used for each channel to measure the vector components of the underwater acoustic field. As a result, not only the hydrophone volume can be diminished, the average density of the hydrophone decreased, but also the phase mismatch between accelerator pair, which was used in old design, can be eliminated. A PVDF piezoelectric membrane is used as Sensitive element for measuring the scalar pressure of the underwater sound field.