How does gps navigation work

A small computer program in the receiver translated the information about subsequent positions into dots on the screen. This way you can see where you came from and where you actual are, as well as the track that you followed to come to your actual position. As long as you move, the system can also calculate the direction in which you move, by comparing subsequent positions. If you project your direction over a longer distance's receiver that can capture the signals of several GPS

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