[clug] WiFi Direction Finder
kermee at softhome.net
Fri May 6 10:20:50 GMT 2005
Nice Thought, but you'll have trouble with the fading environment for
anything using multiple antenna at 2.4 GHz in a nice urban environment.
A simple highly directional antenna looking for the maximum signal strength
will be easier to acquire, wont require specialised hardware/software and
should get you within 5m before you hit trouble.
From: linux-bounces+kermee=softhome.net at lists.samba.org
[mailto:linux-bounces+kermee=softhome.net at lists.samba.org] On Behalf Of
Sent: Friday, 6 May 2005 11:34 AM
To: linux at lists.samba.org
Subject: Re: [clug] WiFi Direction Finder
On Fri, 6 May 2005 10:39 am, Paul Wayper wrote:
> Sweep the stick around, and when the timing difference was exactly the
> same as the distance between the aerials (or, more generally,
> approached a maximum), your stick points to the access point.
The sin function is flat at 1 (maximum)
but has a gradient of 1 at 0 (minimum).
So you will get a more accurate angle
by turning till the signals arrive simultaneously and sighting down the
Probably easier to pick in hardware too.
Yes, checking which aerial was ahead at maximum would tell you which way to
One solution would digitise both inputs, use software to define windows
when the target station is transmitting, and check the alignment within
When we see you wandering around
with a pair of wifi aerials rotating
we will know what you are up to.
How far can you get before you have to de-convolute echoes?
Michael James michael.james at csiro.au
System Administrator voice: 02 6246 5040
CSIRO Bioinformatics Facility fax: 02 6246 5166
Internet Explorer is fine for downloading Firefox, but after that....
linux mailing list
linux at lists.samba.org
More information about the linux