Wireless geolocation (position determination) may be accomplished via many techniques. RSS techniques are interesting due to their simplicity and generality, and can be accomplished from a set of reference stations radiating any set of waveforms. This motivates the idea of performing RSS-type positioning from a set of Signals-of-Opportunity (SoO) that happen to be in a local area (e.g. commercial radio, TV sources, etc.). The large number of potential sources helps improve the location accuracy.