FIELD: physics.
SUBSTANCE: light pulses are transmitted into the atmosphere from points spaced apart in space. Echo signals are received at transmission points on intersecting probing paths. The intersecting paths pass through from not less than three noncollinear directions. The intersecting paths form two probing regions. The regions are formed by sections between their points of intersection, having a common scattering volume. Echo signals on sections forming the regions are accumulated. Atmospheric characteristics are determined from the echo signals received from intersection points of the paths and the accumulated echo signals. Both probing regions are reduced using design formulas and the procedure is repeated until achieving a given level of coincidence of two successively received results of determining atmospheric characteristics. Atmospheric transparency is found from two coinciding, successively obtained results.
EFFECT: high accuracy of determining atmospheric transparency.
1 dwg
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Authors
Dates
2012-01-10—Published
2009-11-27—Filed