[netsharc]

I've also read about the Syrian bombs targeting Iridium users. Maybe they used triangulation to locate the source of the signal that was being broadcast from earth. Does/did the Syrian govt have that tech? Would they need satellites, or would helicopters be enough? And which government/supplier did they buy it from?

[ris]

You can probably deduce quite a lot position-wise by observing the doppler shifts and doppler shift corrections.