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How do GPS Systems work?

gps systems
Alaina asked:

My father have no idea how these things work or something any info or what accesories.

Scarsdale Real Estate



   Posted in Other - Electronics    

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One Response to 'How do GPS Systems work?'

  1. lost in ttranslation - October 31st, 2009 at 6:01 am

    Well GPS is US created positioning system( military , and during any war acts US might disable it ) , it uses 3 sats to send and receive signal to determine location . When buying GPS you should pay attention to map support ( make sure that there is your location maps ) , usually services are free , some GPS units can have addition functions ( mp3 , mp4 ) .
    Main brands are Tom Tom , Garmin , Sony ( some smart phones have build in GPS - Nokia N95 )