Thanks for the help guys.
Just a short info blurb:
Multiple low powered beacons with no synchronization between them laid out in a random pattern. For this proof of concept, maybe three. For the real world application, maybe thirty thousand (
)... lets focus on the proof of concept first.
I'll begin looking into some kind of doppler system. I saw the ham radio guy's competitions and stuff but I can't have anything backpack size with the huge antennas like I saw in those pictures. Unfortunately a google of "doppler radio direction robotics" doesn't have much, except for some guy on a forum named Chief Delphi
Not sure what you're referring to Alan. Nothing is really set in stone. The main requirements are an ability to mass produce, cheaply and efficiently, a large amount of beacons and then be able to find them when scattered in a wide area (proof of concept: square mile; production: entire town).