[OLPC Networking] [Server-devel] RSSI value questions
V. Michael Bove Jr.
vmb at media.mit.edu
Sat Apr 5 08:55:14 EDT 2008
Yes, the Master's thesis that Wad referenced discusses the error
issue, and how to make best use of pairwise measurements when you
have more than three machines...
Incidentally, there is a patent on doing the same thing with RF that
Ben Dalton and I did with audio.
On Apr 5, 2008, at 1:49 AM, david at lang.hm wrote:
> you could take three laptops and have them do acoustic measures
> from each other and then work out from that.
> I don't think it's worth trying to deal with system lieing about
> their location (at least not for the first cut)
> one thing to keep in mind is that each measurement has an error
> band accociated with it, so as you get secondary positions and work
> out from there the locations become less precise.
> one question about the XO hardware. are the two antennas directly
> connected inside the machine, or is there some way (possibly
> requiring a firmware modification) to find the difference between a
> given signal between the two antennas?
> David Lang
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