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Ralph Wellington's Article List




Gps - what is it?
Writed: 03-01-2012 | author: Ralph Wellington
Our GPS system is a radio wave for satellite navigation systems to the U.S. military. A civil signal is also provided by currently used by more people than that used by our military. By placing the first satellite into orbit in 1960, became fully operational GPS system in 1995. This is a brief overview of the history and details of the system.
 
 

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