global positioning
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The Global Positioning System
Global Positioning System (GPS) Overview ... Precise positioning is possible using GPS receivers at reference locations providing corrections and relative positioning data ...
www.colorado.edu
Global Positioning - eHow.com
Learn about Global Positioning on eHow.com. Find info and videos including: How Do Robots Detect Motion?, How Does GPS Work on Cell Phones? ...
www.ehow.com
Global Positioning System
The Global Positioning System "The United States Government shall... The Global Positioning System (GPS) is a U.S.-owned utility that provides users with ...
www.gps.gov
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