空气中矢量水听器相位差测试方法研究

Study on the Test Method for Phase Difference of Vector Hydrophone in the Air

为解决低频振速型矢量水听器相位差测试中出现的环境、体积受限问题,在分析矢量水听器用声压、振速传感器测试原理的基础上,设计了矢量水听器相位差测试装置。将该装置与驻波管进行对比验证,结果表明该装置可以满足矢量水听器相位差的测试要求,并且在甚低频范围内比驻波管更准确。分别就传感器数量、放置方式对相位差的影响进行测试,分析结果表明,振速、声压传感器的数量以及声压传感器的放置深度变化对相位差测试结果没有影响。

In order to solve the restriction problems of environment and volume appeared in phase difference test for low frequency vibration velocity type vector hydrophone, the test device for phase difference of vector hydrophone has been designed on the basis of analyzing the test principle using sound pressure, vibration velocity sensors for vector hydrophone. The inter-comparison verification of this device and standing wave tube is conducted, the result indicates that this device can satisfy the test requirements for phase difference of vector hydrophone and it is more accurate than the standing tube in very low frequency range. The test and analysis with different quantity and placement mode of sensors are carried out;it is found that the vibration velocity, sensor quantity and placing depth of the sensor do not affect the test result of the phase difference.