关键词: 激光反射层析法, 换能器, 声场测量, Radon变换, 滤波反投影算法

Abstract: The radiation acoustic field distribution of the transducer can reflect the acoustic performance of the transducer directly.It will affect the diagnosis and evaluation of the transducer if the radiation acoustic field of the transducer cannot be measured accurately.The theoretical formula for reconstructing the radiation acoustic field of the transducer by laser reflection tomography is deduced from the perspective of theoretical simulation.And the theoretical calculation of the laser reflection tomography is carried out by using the derived theoretical formula.The result shows that the laser reflection tomography can reconstruct the radiation acoustic field distribution of the transducer and the acoustic pressure in the acoustic field accurately,which provides a feasible method for the acoustic field reconstruction and acoustic pressure measurement of the transducer.

Key words: Laser reflection tomography, Transducer, Acoustic field measurement, Radon transformation, Filter back projection algorithm