FIELD: underwater acoustics, determination of dependence of velocity of sound on depth of ocean. SUBSTANCE: meter incorporates fiber-optical coils attached to rod-towline at equal distances, source 3 of coherent light, photodetector 4 optically coupled with interferometer, phase shifter 5, projector and unit 9 for processing and recording. EFFECT: improved operational characteristics. 3 cl, 5 dwg
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|---|---|---|---|
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|
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