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	News: GPS Selective Availability lifted 10 years ago Many of you may not have heard of Selective Availability (SA). But for those of us who were fortunate enough to own a GPS receiver prior to 2000, SA was a very big deal indeed! SA was a feature of the military GPS network (NAVSTAR is a US military funded and operated system) that added an intentional error to the GPS signal made available to non-military users. This error was added so as to degrade the accuracy of the GPS signal and was intended to preclude the use of civilian GPS receivers by enemy forces. It was the removal of SA that made mapping based GPS a viable service and initiated the explosion in the mapping based navigation devices that we all benefit from today. Click here to read more... Click here to discuss... Posted on Sunday, May 02 @ 11:23:29 UTC by Darren Griffin


	Related Links · More about · News by Darren Griffin Most read story about : TomTom Announce Navigator for Smartphone, Symbian and Sony P900


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