FIELD: measuring technology, possible use for estimating speed increments of self-propelled underwater and above-water objects.
SUBSTANCE: between two filament coils of fiber-optic interferometer along direction of expansion of acoustic wave hydro-acoustic emitter is mounted. Fiber-optic interferometer also contains a source of coherent light and photo-receiver, amplifier, band filter, electric signal generator, registration device. Fiber-optic interferometer also contains phase-shifting device, mounted in one of filament coils.
EFFECT: protection of increment meter from influence of electric and magnetic interferences, increased precision.
3 cl, 1 dwg
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