[clug] WiFi Direction Finder
Paul Wayper
paulway at mabula.net
Fri May 6 07:51:55 GMT 2005
At 11:33 AM 6/05/2005, you wrote:
>So you will get a more accurate angle
> by turning till the signals arrive simultaneously
> and sighting down the perpendicular bisector.
>Probably easier to pick in hardware too.
That's a really good point, and probably explains why those people who
radio track koalas in the bush use this kind of rig.
Question: if you wired one aerial on opposite phase to the other, and then
fed that signal to the network card, wouldn't that give you packets that
were only perpendicular the base line _and_ in one direction (because at
anything else they'd interfere or cancel out)?
If you further set the card to give you the signal strength, you can use
the thing like a geiger counter or beeper - as the signal from that MAC
gets stronger, the beeping gets louder or faster or higher. (Or use the
three parameters to indicate three separate parameters of the
signal/packet, such as signal strength, network type and size of packet).
My aim here is to get something together that I can assemble together
reasonably easily. I'm glad we've progressed away from my
sub-nanosecond-timing idea.
Have fun,
Paul
---------------------------------------------------------------------
SigClean 1.5a prevents all errors in transcription, transmission, and
reception of eMail, destroys sig and email viruses, and stops flames.
Report all bugs to the author. SigClean is FreeWare. (c)1998-2004 PJW
More information about the linux
mailing list