[Dailydave] my idea of the day

[christian void]

On Thu, 15 Mar 2007, Jonathan Wilkins wrote:

> WiFiFoFum has a radar mode
> http://www.aspecto-software.com/rw/applications/wififofum/screenshots/index.html
>
> No idea how useful that really is.

after thinking about it for a sec, you could probably just use 
null-detection with a directional antenna and take a couple of power 
readings to find the null at several locations. it's pretty old school rdf 
but i don't see why you couldn't code it up by reading s-levels of the 
incoming signal, etc. something using doppler shift with an array of 
antennas (it's 2.4Ghz so the antennas are small, this could be handheld) 
would just give you a bearing. lots of gear out there to do this, some of 
the better stuff is even "open source" if you will.

a wifi doppler shift rdf box that could be velcroed to a laptop would be 
sweet.

-- 
christian void
cvoid at morphine.com
http://www.morphine.com/void/