The article discusses the possibility of using a plane piezoelectric transducer with a large wave dimension as the source of a reference plane ultrasonic wave, which can be used to calibrate hydrophones in the megahertz frequency range. In the experiment, the source was a piezoceramic disk with a diameter of 100 mm and a thickness resonance frequency of about 1 MHz. A method was developed for determining the sensitivity of the transducer in the transmit mode by measuring its electrical impedance. A methodology is proposed for finding the parameters of the plane wave component of the emitted acoustic pulse from a known electrical signal on a generator. It is shown that the acoustic pulse profile measured by a calibrated hydrophone near the source agrees well with the theoretically predicted signal.

本文讨论了使用具有大波幅的平面压电换能器作为参考平面超声波源的可能性，该参考平面超声波可用于校准兆赫兹频率范围内的水听器。在实验中，源是直径为100 mm且厚度共振频率约为1 MHz的压电陶瓷盘。开发了一种通过测量传感器的电阻抗来确定其在发射模式下的灵敏度的方法。提出了一种用于从发生器上的已知电信号中找到所发射的声脉冲的平面波分量的参数的方法。结果表明，通过声源附近的校准水听器测得的声脉冲轮廓与理论预测信号非常吻合。