How does GPS work?
How does GPS work?
user
GPS is a positioning system that uses satellites and ground stations to compute a location. This information is then sent to a GPS receiver (which may be on a smartphone or a dedicated GPS unit) and used by other applications to tell you your location.
assistant
Satellites in space?
user
The satellites circle Earth, so when you turn on your GPS unit (or your smartphone), it calculates the best location from many different satellites, and takes a sample of where you are.
assistant
Wow. I used to use a map book in the old days.
user