It turns out that there’s a whole controversy going on about wind farms, which deliver ‘green’ energy.

The BBC has a story listing 10 objections to wind farms, more than half of which are bunkum, but it turns out that one of the major problems they produce is RADAR clutter, which creates false positives (aircraft being spotted when they really are just a wind farm) or misses the aircraft completely. They are working on ways to negate this effect by putting filters on the RADARs and also by changing the design and placement of the wind turbines to lower their RCS and RADAR interference. Good studies with pretty pictures 🙂