Design of high frequency acoustic transducer calibration system based on near-field acoustical holography

The demand for efficient and accurate devices used for calibration has been put forward in recent years. The nearfield measurement technology is a convenient and operability method to calibrate an acoustic transducer. The calibration of high frequency acoustic transducer has a bigger error due to the limit of the calibration equipment. A high frequency acoustic transducer calibration system is designed in this paper. The fiber grating hydrophone array, the mechanical scanning mechanism, the control system and the design of the interface are included in the system. The simulations have been carried out to verify the correctness of the system. As a result, the design principle and implementation scheme is reliable.