Acceleration Sensitivity Analysis of Hydrophone

The working environment of platform has put forward many requirements on the performance of hydrophone, and the sound pressure sensitivity and acceleration sensitivity are the most important, especially the acceleration sensitivity, which determines whether the hydrophone can effectively resist the vibration noise interference caused by platform vibration and eddy current. Reducing the acceleration sensitivity can improve the signal to noise ratio of hydrophone and reduce the minimum detectable signal. In this paper, the acceleration sensitivity mechanism of hydrophone is analyzed theoretically, and four methods to reduce the acceleration sensitivity of hydrophone are put forward. The four cases are analyzed by COMSOL finite element software.