Crosswind speed measurement by optical measurement of scintillation

摘要

The present disclosure describes methods and systems for measuring crosswind speed by optical measurement of laser scintillation. One method includes projecting radiation into a medium, receiving, over time, with a photodetector receiver, a plurality of scintillation patterns of scattered radiation, comparing cumulative a radiation intensity for each received scintillation pattern of the received plurality of scintillation patterns, and measuring a cumulative weighted average cross-movement within the medium using the compared cumulative radiation intensities.

主权项

1. A device for optically measuring crosswind, comprising:
a laser transmitter adapted to generate a laser to illuminate a path through an atmosphere; a plurality of receivers, each receiver comprising a single-pixel photodiode coupled with distinct optics and adapted to analyze the path of the laser through the atmosphere, each receiver spaced apart from other receivers at a known particular distance, each receiver receiving a scintillation pattern created by atmospheric eddies diffracting and refracting scattered laser radiation, and, for each receiver, converting the received scintillation pattern into a single data point measuring cumulative light intensity; and the device adapted to compare cumulative light intensities from each receiver and to generate a crosswind profile along the path of the laser.