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What is Global Positioning System?A system of satellites in low Earth orbit that, in conjunction with a receiver, can be used to determine one's location anywhere in the world with an accuracy of about 10 feet. Originally developed for US military use and deliberately scrambled to prevent other users from obtaining accuracy better than 150 feet, the scrambling was discontinued during the Clinton administration -- and the game of geocaching was founded the following day. The Global Positioning System has rendered my DeLorme map obsolete! Global Positioning System - video |
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