I am looking for a method to determine the precise location of a transmitter, the receiver will be mounted on a RPi based robot. It should be able to update the values of RSSI (or any other parameter that enables some sort of directional knowledge) in order to determine a path to the transmitter.
I have considered Bluetooth(I know RSSI measurement is possible but is it accurate? ), RF(too much dependent on environment), Ultra Sonic sensors(not much range) .
Please suggest what should I use, or is there any other way to do it (without transmitter and receiver).
P.S. I am looking for something elegant. So no Line Follower etc.
Thanks a lot.
