While the ideas behind it were developed much earlier, GPS didn't become fully operational until 1995 [1]. It's also worth noting, on the other hand, that the

While the ideas behind it were developed much earlier, GPS didn't become fully operational until 1995 [1]. It's also worth noting, on the other hand, that the (not yet fully operational) system was used during the first Gulf War. [2] [1] http://tycho.usno.navy.mil/gpsinfo.html http://tycho.usno.navy.mil/gpsinfo.html The U.S. Air Force Space Command (AFSC) formally declared the GPS satellite constellation as having met the requirement for Full Operational Capability (FOC) as of April 27, 1995. [2] http://www.gpsnavigatormagazine.com/gps-at-war.html http://www.gpsnavigatormagazine.com/gps-at-war.html