[QUOTE=_Kent_;39025952]Could a device use multiple navigation satellite systems at the same time for greater accuracy?[/QUOTE]
Yes. Multiple phones including the iPhone and most android based phones such as Samsung's Galaxy series use both [URL="http://en.wikipedia.org/wiki/GLONASS"]GLONASS[/URL] and [URL="http://en.wikipedia.org/wiki/Global_Positioning_System"]GPS[/URL] at the same time.
[QUOTE=_Kent_;39025952]Could a device use multiple navigation satellite systems at the same time for greater accuracy?[/QUOTE]
In theory they could, in the same way that some things (like aircraft) use different navigation systems to become really accurate.
I guess the next question is: people with phones that support GPS and GLONASS (the iPhone is the most common example I know of), how does it work? Do you switch from one to the other or is it just there? Is it more accurate than GPS (Hard to tell unless you happen to have multiple GPS receivers to hand but who knows someone might).
[QUOTE=Jsm;39026003]In theory they could, in the same way that some things (like aircraft) use different navigation systems to become really accurate.
I guess the next question is: people with phones that support GPS and GLONASS (the iPhone is the most common example I know of), how does it work? Do you switch from one to the other or is it just there? Is it more accurate than GPS (Hard to tell unless you happen to have multiple GPS receivers to hand but who knows someone might).[/QUOTE]
Well my S3 uses both at the same time. It uses all available satellites.
[editline]29th December 2012[/editline]
A good comparison while on the move in a city of the benefits of having access to GLONASS/GPS.
[video=youtube;Sf08o_j68XA]http://www.youtube.com/watch?v=Sf08o_j68XA[/video]
[QUOTE=Swebonny;39024644]I think it's a bit more than just "removing" something from a chip. I mean, I think we're underestimating USA a bit here.[/QUOTE]
GPS limits are clientside (ie. the hardware you're using). They're not hardwired into the orbiting satellites. As a result, it's pretty easy to get rid of. iirc it's not illegal to have a GPS module with the restrictions removed, it's just illegal to transport it out of the US without it being considered a 'weapon' by ITAR.
[QUOTE=FunnyBunny;39026617]GPS limits are clientside (ie. the hardware you're using). They're not hardwired into the orbiting satellites. As a result, it's pretty easy to get rid of. iirc it's not illegal to have a GPS module with the restrictions removed, it's just illegal to transport it out of the US without it being considered a 'weapon' by ITAR.[/QUOTE]
Does this not mean that every single GPS device made outside of the US (IE like all of them) is really exempt from this?
Or does ITAR cover the entire world? I have only ever bumped into ITAR in a way that effects me twice, and both times it was a non issue.
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