Global positioning system (GPS) receiver being held in a hand. The system uses a network of satellites that orbit the Earth. Each of these sends out s

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Global positioning system (GPS) receiver being held in a hand. The system uses a network of satellites that orbit the Earth. Each of these sends out signals about its position and the time. The receiver uses the signals from at least four satellites simultaneously to calculate its latitude, longitude and altitude, as well as the local time.

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Size: 5238px × 3507px
Photo credit: © STEVE PERCIVAL/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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