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[aprssig] Wi-Fi Positioning System (WPS) for APRS

John Habbinga kc5zrq at gmail.com
Tue Sep 5 17:31:16 UTC 2006


Netstumbler tells you were the Wi-Fi access points are at.  WPS tells
you where you are at based on signals from Wi-Fi access points.

WPS doesn't care what the SSID is.  It detects Wi-Fi systems
regardless of if they are broadcasting their SSID and records the MAC
address, which rarely changes.

Yes, Wi-Fi is changing and will require the area to be redriven at a later date.

I rarely ever, am unable to detect a Wi-Fi signal with the scanning
device that I'm using.

On 9/5/06, David Huff <davidh at cf.distek.com> wrote:
> Have you looked at netstumbler? www.netstumbler.com  It has support for
> reading GPS positions (it reads NMEA GPS data)  There are also similar
> wifi mapping applications out there.
> I have heard of companies trying to do this, one article I read said
> they always seem to run into 2 problems.
> 1. Some Wifi systems change their SSID,(usually advanced configs, or an
> easy way to allow changing security profiles) And mapping Wifi is a
> changing thing, people are continually turning off changing or buying
> new wifi equipment.
> 2. The Wifi connection cloud can be huge in some cases, the largest wifi
> node can easily span a city block or more.

-- 
John Habbinga, KC5ZRQ
Lubbock, Texas
http://find-you.com/cgi-bin/find.cgi?call=KC5ZRQ*




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