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• Global Positioning System - Wikipedia, the free encyclopedia

  The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force ...

• The Global Positioning System

  Global positioning system overview and bibliography.

• Global Positioning System

  Public information about the Global Positioning System (GPS) and other space-based positioning, navigation, and timing (PNT) systems