How many satellites do you need to start a GPS system from scratch?

March 19, 2009 by admin · 2 Comments
Filed under: Astronomy & Space 
gps
megalomaniac asked:


I think you need more than three. Its not just simple triangulation. You need AT LEAST three that are within ’sight’ of your device, but some of them are going to be on the other side of the globe, or am I missing something?