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How does a GPS receiver determine its location?

A GPS receiver determines its location by analyzing signals it receives from GPS satellites orbiting around Earth.

Signals from satellites that are farther away take longer to reach the GPS receiver. Distances to several satellites are calculated based on the amount of time their signals took to reach the receiver.

After determining its distance from at least three satellites, the GPS receiver can calculate its own position using triangulation. (Any location can be identified using distances from three other know locations.)

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