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Sat Nav/Satellite Navigation

How does satellite navigation work in a car?

A car’s satellite navigation system, or sat nav, uses the information from GPS satellites to work out its latitude, longitude, altitude and movement. This information can then be used to work out the car’s position on a map stored in the sat nav unit. The driver can then see where they are and plot a route to where they want to go.

Related Jargon

What is GPS and how does it work?

The Global Positioning System (GPS) is a network of satellites that sends information about time and location to a vehicle’s navigation system.

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