Walker using a handheld GPS on Helvellyn the third highest peak in the Lake District England

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The Global Positioning System (GPS) is currently the only fully functional Global Navigation Satellite System (GNSS). Utlizing a constellation of at least 24 medium Earth orbit satellites that transmit precise radio signals, the system enables a GPS receiver to determine its location, speed and direction.

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Size: 3531px × 5203px
Location: Helvellyn England
Photo credit: © Dave Willis / Alamy / Afripics
License: Licensed
Model Released: No

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