I guess my goal of trying to do it without breaking any rules isn't going to work.
Also I would be trying it with multiple access points, and this phase would just be to get the architecture in place for this kind of triangulation. I don't want to do it via WLAN, but the cRIO zigbee module is $700, and I don't have $2100 kicking around to produce a zigbee triangulation set up, as much as I would love to (anyone have grant money to do such a spike?? haha). Maybe I'll purchase some zigbee chips and try it that way.
http://www.trossenrobotics.com/biolo...x?feed=Froogle ($25 a sensor)
http://ieeexplore.ieee.org/stamp/sta...umber=04463608
Thanks for all the feedback everyone!
(Hence why I switched from EE to CS

)