Quick Dumb Question

[jmfargo]

If you were to go far back in time, GPS systems would be useless because there are no satellites, correct?

Is there a system, in use today, that can tell you your relative position on the face of the Earth without use of satellites, and not requiring any input from the user?

Comments

[jfargo.livejournal.com]

Sounds as though it was relatively ~wildly~ inaccurate, especially if you didn't know what you were doing with it.

Still, it's better than nothing, I suppose.