FIELD: measurement technology. SUBSTANCE: procedure includes sounding of tested region of atmosphere with electromagnetic radiation with fixed wave length, measurement of intensity of signals of interaction with atmosphere on second wave length and reception of signals of interaction from specified number of points of tested region of atmosphere. Atmosphere is sounded in forward and backward directions and intensity of signals of interaction is measured on third wave length for both directions of sounding. EFFECT: increased precision of determination of spatial distribution of physical parameters. 2 cl, 1 dwg
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