[talk-au] new toy found by son

John Smith deltafoxtrot256 at gmail.com
Fri Oct 2 01:27:52 BST 2009


2009/10/2 Sam Couter <sam at couter.id.au>:
> I thought AGPS didn't help with accuracy, it just helps with faster
> satellite aquisition by downloading ephemeris data instead of searching
> blindly for visible satellites. It won't help with surveying a tunnel.

Depends what type of AGPS I think, in the case of phone networks they
potentially know your location to within a couple of metres and could
either ignore or supplement anything the phone sends with what the
phone network already knows about your position.




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