|Location using AM radio signals:
AM radio stations emmit a very stable carrier frequency from a fixed
location (the transmitter). By using a digital radio to monitor phase
changes in the carrier frequency, it should be possible to tell
whether a mobile device has moved towards, or away from, the
transmitter. By tuning into several AM stations simultaneously it
should be possible to recover accurate position information.
This project could take two forms: A student interested in hardware
could build the digital radio. Alternatively, the work could be done
entirely in simultaion. Either way, there's loads of really cool DSP
stuff to be done.