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[Acronym] for __G__lobal __P__ositioning __S__ystem. [GPS] is a set of satellites that know precisely where they are, and the exact time and broadcast this fact. You can then use a GPS reciever which listens to these signals, and uses them to find out exactly where it is. [GPS] is run by the American Government, who also have the ability of turning on "Selective Availability" where the satellites add a bit of jitter to the signal that they send, so that the GPS is less accurate than normal[1] so that the "BadGuys" can't use [GPS] to attack the GoodGuys. Of course this irritates everyone else, so the Europeans are going to put up their own [GPS] style system. [1]: GPS is pretty inaccurate as it is, because of atmospheric effects and other stuff.
8 pages link to
GPS
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ResourceRecord
GeoCaching
WarDriving
RDF
NTP
TimeNotes
NTPServers
TimeSources
