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[aprssig] Re: WiFi for tracking ?

Stephen H. Smith wa8lmf2 at aol.com
Tue Aug 14 07:01:08 UTC 2007


Mark Fellhauer wrote:
> At 05:17 PM 8/13/2007, Stephen H. Smith wrote:
>> Andrew Rich wrote:
>>> Has anyone got a PDA, a GPS and some code ande sent back there 
>>> positon using wifi ?
>>>  
>>> 2.4 GHz stuff is cheap enough.
>>>  
>>> Andrew Rich VK4TEC
>>
>> And what would the point of this be?   Given the range of typical 
>> WiFi gear, you could probably SEE the location of the other station. 
>
>
> Actually this has been demonstrated on a few large college campuses.  
> Having attended Arizona State University, I can attest you cannot see 
> from one side of the main campus to the other...
>
> By using triangulation methods, a person can be located to within 
> about 60 feet, using common access points.  Several methods have been 
> devised and a few fielded.  There is also a system I've read about 
> that's more of a proximity sensor.
>

 From the wording of the original query, it seems Andrew was basically 
proposing using a WiFi radio instead of a 2-meter rig to send GPS data 
to another user.  Not triangulating the signal from multiple access 
points.    




--

Stephen H. Smith    wa8lmf (at) aol.com
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