How Satellites Track Our Exact Location

GPS has become a staple on any smartphone, but how does it work?
The current GPS configuration consists of a network of 24 satellites in high orbits around the Earth. Each satellite in the GPS constellation orbits at an altitude of about 20,000 km from the ground, and has an orbital speed of about 14,000 km/hour (the orbital period is roughly 12 hours – contrary to popular belief, GPS satellites are not in geosynchronous or geostationary orbits).

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