METHOD FOR REAL-TIME REMOTE DETERMINATION OF WIND SPEED AND DIRECTION Russian patent published in 2010 - IPC G01P5/22 G01P5/26 G01S17/95 

FIELD: physics.

SUBSTANCE: atmosphere is probed with two pulsed laser beams propagating with a small angular distance between them of up to 10 degrees and signals from scattering volumes of aerosol non-uniformities are then picked up. The atmosphere is irradiated with laser pulses with duration of , defined by minimum distance d_min between scattering volumes in the atmosphere and speed of light C. The number of scattering volumes n > 2 is selected based on the required angular accuracy Δφ for determining wind direction. Minimum values of mutual-structure functions S_1,i(τ)=([U₁(t)-U_i(t+τ)]²) between a signal U₁(t) from scattering volume 1 of the first beam and signal U_i(t), i=2…n from scattering volumes 2…i…n of the second beam are determined. The wind direction is the direction between scattering volume 1 and the scattering volume with the least minimum value of the mutual-structure function. The value and sign of the wind speed is determined from the time position of the minimum of the mutual-structure function of signals for these scattering volumes and from the distance between these volumes.

EFFECT: higher accuracy of real-time remote determination of wind speed and direction.

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