METHOD OF HYDROACOUSTIC EMITTER POWER MEASUREMENT AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01H11/08 

FIELD: hydroacoustics.

SUBSTANCE: invention relates to hydroacoustics and can be used to determine power of hydroacoustic emitters located on underwater and surface vessels. Method of measuring power of hydroacoustic radiator and device for its implementation using calibrated hydrophone is used to measure sound pressure of emitted hydroacoustic signal in far zone from radiator. For measurement, the circuit includes a second hydrophone placed at a fixed distance from the radiator, and power is calculated by formula W=4πP²/ρc, where ρ is density of water; c is speed of sound in water; P=U_gr1/γ – reduced to one meter sound pressure; where U_g hydrophone output voltage; γ hydrophone sensitivity; r1=(ΔT_delc+r2) is the distance between the geometrical center of the radiator and the measuring hydrophone; r2 is distance between geometrical center of radiator and auxiliary hydrophone; ΔT – time delay between signals received by hydrophones. Proposed device for implementing method of hydroacoustic emitter power measurement operates as follows. Signal emitted by hydroacoustic radiator on calibrated hydrophone and additional hydrophone creates liquid pressure, which is converted into electric signals. Each of these signals is transmitted via electric cables to the inputs of two analogue-to-digital converters, the outputs of which are connected via a data bus to a processor unit. Processor unit implements algorithms for measuring voltage from a calibrated hydrophone, measuring delay time (phase difference) between signals from calibrated and additional hydrophones, calculating the distance between the radiator and the calibrated hydrophone, calculating the acoustic power of the radiator.

EFFECT: possibility of measuring in the far zone of acoustic power of different types of hydroacoustic radiators in real operating conditions on the working signal of the emitting hydroacoustic radiator without interfering with its design and without using additional measuring devices.

2 cl, 2 dwg