The Global Positioning System (GPS) is a satellite-based navigation system
made up of a network of 24 satellites placed into orbit by the U.S. Department of ...
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http://en.wikipedia.org/wiki/Global_Positioning_System - 13 hours ago
The Global Positioning System (GPS) is a space-based satellite navigation
system that provides location and time information in all weather conditions, ...
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Feb 11, 2014 ... The Global Positioning System (GPS) is a U.S.-owned utility that ... the
implementation of a second and a third civil signal on GPS satellites.
Sep 6, 2013 ... Systems. GPS.GOV. U.S. flag Official U.S. Government information about the
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The GPS (Global Positioning System) is a "constellation" of 24 well-spaced
satellites that orbit the Earth and make it possible for people with ground
receivers to ...
GPS is funded by and controlled by the U. S. Department of Defense (DOD).
While there are many thousands of civil users of GPS world-wide, the system was