Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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SPECTRAL OPTOELECTRONIC QUADRATURE TRANSFORMER OF SIGNALS OF LASER DORLEROVSKY ANEMOMETER

Bakakin G.V. 1 Anikin Y.A. 1 Glavniy V.G. 1 Dvoynishnikov S.V. 1 Kabardin I.K. 1 Krotov S.V. 1 Pavlov V.A. 1 Sadbakov O.Y. 1 Chubov A.S. 1
1 Institute of thermophysics SB RAS
The analysis of methods for preliminary time-and-frequency conversions of signals are a mandatory development cycle of laser Doppler measuring systems. Known devices work in the most simple in implementation a mode of one-channel frequency conversion of a signal without the intermediate frequency. Thus the information on a sign of the speed is lost. Passage to the quadrature mode allows to save the phase information and to recover a sign on speed of measured object. In the article the low-noise spectral optical-electronic quadrature transformer of signals intended for saving of the information on a sign of a deviation of frequency of the Doppler radio signal and its representation in the form of the relative phase of output radio signals. This transformer provides equality phase (including dynamic) distortions in the quadrature channels that considerably refines metrological characteristics of laser Doppler measuring systems.