Learn about the U.S.-developed Global Positioning System (GPS), a vital satellite navigation system used worldwide for ...

More Information. To learn more about how GPS calculations are done, check out “How Global Positioning Systems Work” by Ron White and Tim Downs. You’ll find some useful and informative ...

Armed with the new figures, mathematicians were able to come up with a more accurate calculation for the surface of the earth. It was designated as North America or 1983 (NAD 83) and to get world ...

Every 19 years, the Global Positioning System resets a measure of time built into its program. The latest rollover is Saturday and NPR's Scott Simon asks cybersecurity expert Frank Cilluffo about it.

Originally developed by the U.S. military, the Global Positioning System – now vital to nearly every facet of modern life – is being upgraded to GPS III, whose satellites will be better ...

Global Positioning Systems turned 50 years old last year with the 'golden' anniversary of the US Air Force being given approval in 1973 to develop the Navstar GPS.

When Global Positioning System was first implemented, time and date function was defined by a 10-bit number. So unlike the Gregorian calendar, which uses year, month and date format, the GPS date ...

DARPA may use Earth-based, global positioning alternatives to avoid jamming and spoofing attacks on signals from the U.S.’ constellation of GPS satellites.