GPS.gov: GPS Overview - GPS: The Global Positioning System
https://www.gps.gov/systems/gps/
WEBFeb 22, 2021 · What is GPS? The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment.
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