Research on calibrating vector hydrophones in small water tank

Abstract

The hydrophone calibration system in a small water tank has broad application prospects. This paper studies some theory evidence of the practicability of the hydrophone calibration system in a small water tank. Simulation of the sound field in a small water tank shows the distribution of the acoustic field there in. An experiment is conducted to compare a vector hydrophone with a standard hydrophone, and, calibrate the sensitivity of the vector hydrophone, and thence calibrate the directivity pattern. The frequency is ranged from 50Hz to 1000Hz. Finally, the paper compared the result of calibration with the theoretical sensitivity and directivity pattern.