FIELD: physics.
SUBSTANCE: acoustic parametric receiver has a high-frequency voltage generator 1 connected to an acoustic transducer 2, which is in acoustic contact through an acoustic waveguide 3, the boundaries of which are transparent for a low-frequency acoustic signal and not transparent for a high-frequency acoustic signal, with a wideband acoustic transducer 4, connected through series-connected selective amplifier 5, phase changer 6, phase detector 7, attenuator 8, with a recorder 9. The second input of the phase detector 7 is connected to the output of the high-frequency voltage generator 1. The broadband acoustic transducer 4 is connected through series-connected resonance amplifier 10 and amplitude detector 11, to the control input of the selective amplifier 5. The output of the phase detector 7 is connected through an integrator 12 to the control input of the phase changer 6. Outputs of the control unit 13 are connected to the control inputs of the high-frequency voltage generator 1, the resonance amplifier 10, the attenuator 8, the recorder 9 and the second control input of the selective amplifier 5.
EFFECT: broader functional capabilities of the device.
3 dwg
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