FIELD: metrology and hydroacoustics.
SUBSTANCE: invention relates to the field of metrology and hydroacoustics. The method for determining the phase-frequency characteristic of a hydrophone by its amplitude-frequency characteristic of sensitivity consists in the fact that in a measuring basin filled with water, the emitter, hydrophone and reversible transducer are placed on one straight line so that the hydrophone is between the emitter and reversible transducer, the reversible transducer and hydrophone are oriented with reference directions to the emitter, measure the distances dE-H, dRT-H and dE-RT between the emitter and the hydrophone, the reversible transducer and the hydrophone, the emitter and the reversible transducer, respectively, irradiate the hydrophone and the reversible transducer with an emitter signal in the required frequency range, the frequency dependences ZE-H and ZE-RT of the ratio of the voltages at the outputs of the hydrophone and the reversible transducer, respectively, to the emitter current are measured, the hydrophone is rotated around its axis by 180°, the hydrophone is irradiated with the signal of the reversible transducer in the required frequency range, the frequency dependence of the ZRT-H ratio is measured voltage at the output of the hydrophone to the current of the reversible converter, the amplitude-frequency characteristic of the sensitivity of the hydrophone is calculated from the data obtained. Then the distance from the surface of the active element of the hydrophone to its reference point is set, the phase-frequency characteristic of the hydrophone sensitivity φh(ƒ) for the reference point is calculated using the Hilbert transform.
EFFECT: increasing the accuracy of determining the phase-frequency characteristics of the hydrophone and reducing the complexity of the measurement experiment.
1 cl, 4 dwg
