Found it on Google Earth...east of OrlandoCan you be a little more specific on where you've seen it? There's a lot of stuff east of Orlando.
There are a couple of similar setups close to Edwards, I have been told they have something to do with navigation when the space shuttle comes in.
I suspect Rosie knows something about them.
http://maps.google.com/?ie=UTF8&ll=34.924645,-118.526258&spn=0.024068,0.055404&t=h&z=15
located east of Edwards Air Force Base (EDW) called Helendale[/i]