Tag Archives: Doppler

Giving wind turbines a “spider sense”

Okay, the “spider sense” part is a bit of a stretch, but being a Spider Man fan I had to throw it in. Actually, what I’m talking about is a new type of LIDAR (Light Detecting and Ranging) device that’s designed to integrate into the nacelle of a wind turbine. The laser system, developed by a Manassas, Virginia-based company called Catch The Wind Inc., projects three beams up to 1,000 metres in front of a wind turbine. The colour frequency of the beams change when dust particles pass through them, and the colour is directly proportional to the distance of the particle — and thus the wind. Using this approach, based on the Doppler principle, the three beams work together to calculate both the speed of the wind and its direction.

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