Research on measurement of acoustic array radiation impedance based on curve fitting

Mutual radiation impedance attracts more and more attention in acoustic array research as inherent acoustic characteristic. For the measurement of the mutual radiation impedance, the curve fitting method is proposed based on the analysis of the relationship between the ideal and the practical directivity patterns. Simulation and experiments were carried out to validate the practicability of the method. The results show that radiation impedance can be measured quickly and accurately by the proposed method.