3D wind measurement

Risø DTU is developing commercial laserbased wind radars, called wind LIDARs, which can replace meteorology masts via measurements from the ground. The laser beam is refl ected by particles in the air, and the frequency of the refl ected light changes depending on whether the particles are moving towards or away from the laser in the direction of the beam. By turning the beam and measuring at several points rapidly after each other, it is then possible to determine wind direction and wind speed.

Read more in RisøNews, December 2007.