FIELD: metrology.
SUBSTANCE: system contains interconnected narrow-band continuous laser, acousto-optic modulator, transmitting optical amplifier, optical circulator, sensitive element in the form of an optical fibre, receiving optical amplifier, optical filter, quadrature optical receiver for two polarization planes, four-channel signal processing unit, frequency filter, post-processing, control and synchronization unit, computer, four-channel adjustable amplifier, four-channel analogue-to-digital converter, polarization-maintaining splitter, transmit-receive optical module, amplifying optical module.
EFFECT: increased sensitivity of the device for monitoring vibroacoustic characteristics of an extended object with a recognition system based on machine learning and neural networks.
1 cl, 2 dwg
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