What's the relation between generel relativity and GPS navigators?

What's the relation between generel relativity and GPS navigators and how excactly does it work ?|||General Relativity describes the local "clock rate" for each of the GPS satellites in their non-geosynchronous orbits. There is a contribution from both the relative motion of the satellites with respect to an average of Earth's surface, and the difference of their position in Earth's gravitational well.





Essentially, the GR contribution comes down to adding a few "clock cycles', as compared to similar clocks here on Earth.





This allows for triangulation using multiple satellites (3 - 4) to provide an accurate position on Earth.|||Well relativity refers to gravity. Gps is a group of satellites fixed in orbit. How fast and how high dose the satellite need to be to maintain it's fixed position over a specific region of the globe. Hope that puts you on the path.