CONTACTLESS PASSIVE WIND PARAMETER IDENTIFIER Russian patent published in 2025 - IPC G01P5/26 G01W1/00 

FIELD: measuring.

SUBSTANCE: invention relates to means for determining wind parameters. Wind parameters identifier contains signals control and processing unit (1), optoelectronic module (2) containing three photodetectors (3) with signal pre-amplification units, optical system (4) with a variable focal distance and a diaphragm unit which automatically controls the background radiation flux received by optoelectronic module (2). Each photodetector device (7) together with optical system (4) forms one of optoelectronic module (2) angular sectors (8) located next to each other, within which photodetector (7) receives background radiation flux with intensity modulated by inhomogeneities of air mass (13) moving and crossing sector. Variable component of the electrical signal which corresponds to the variable component of the background radiation stream received by photodetector (7) is picked up and amplified from the output of each of photodetectors (7). At that, the time delays between the signals repeating at photodetectors (7) outputs, obtained based on the correlation functions calculation between the signals from analogue-to-digital converter (11) outputs, are proportional to air mass (13) movement speed between the optical-electronic angular sectors (8) module (2). At that, formed by optical system (4) angular sectors (8) sizes with a priori known average sizes of the most frequently occurring inhomogeneities of the atmosphere, performing the background radiation intensity temporal modulation during movement, allow to localize space region (9) position, where the background radiation maximum modulation by the moving air mass (13) occurs, making the main contribution to the information on the wind velocity vector. Parameters of wind speed projection at different distance from wind parameter identifier are determined by changing dimensions of angular sectors (8) by changing focal distance of optical system of optoelectronic module (2).

EFFECT: high sensitivity of the device.

1 cl, 1 dwg