METHOD FOR LASER-BASED REMOTE RAPID DETERMINATION OF WIND SPEED AND DIRECTION Russian patent published in 2012 - IPC G01P5/26 

FIELD: physics.

SUBSTANCE: atmosphere is irradiated with a horizontally scanning pulsed laser beam at time t₁ and t₂=t₁+Δt, where Δt is much greater than the time for scanning the analysed spatial region with the laser beam. When scanning, the receiver is "opened" to detect signals back-scattered from atmospheric aerosol only at defined time instants which correspond to the arrival of signals of N radial measuring bases, the number of which is selected based on the required accuracy of determining wind direction. The obtained distributions are used to measure the size of atmospheric irregularities along each measuring base. Wind direction is determined as the direction of the measuring base, for which the dimensions of atmospheric irregularities differ the least at time t₁ and t₂, and the modulus of wind speed is determined using the expression: where ρ_m is the spatial shift of atmospheric irregularities along the wind direction.

EFFECT: invention enables to reduce the volume of signal information required to determine wind speed and direction.

6 dwg