2020-02-16, 07:50 PM
I was going to say the same. the clock on the gps is very precise. It uses that clock to compute the total trip time for the gps signal. In which has the time the signal left the satellite along with its position. So it can calculate the distance or radius from the satellite when you have 4 or more satellites you can calculate your 3D position. Since the signal travels close to the speed of sound you need a very accurate clock. That is my very condensed version of how GPS works.