Hi, That's a great theory and I wish we could use wifi like that. Its similar to GPS triangulation technique. I was initially guessing the same - but there are a few issues which makes me think otherwise. First of all, something called fading (weather, multi-path) causes signal strength to vary wildly, making it unreliable.
Another mechanism is using timing signals (used by GPS). Each reference station sends a time reading. By calculating timing delay between reference signals, it is possible to calculate position. But for that to happen with wifi, there are serious issues. Wifi links are point to point links with some delays (making timing impossible). And they all use the same frequency channels. But worst, a wifi link is never setup when 2 stations are transmitting simultaneously to a single receiver. So it may be impossible to do triangulation. But who knows, I could be completely wrong in my understanding. Data link protocols are a tough nut to crack at college. And knowing Google, this might be a deceptively simpler trick. Anyway, I am really interested in it. And since Google gears is open source, I wonder what clues the source holds about wifi geolocation. Regards, Gokul Das --~--~---------~--~----~------------~-------~--~----~ "Freedom is the only law". "Freedom Unplugged" http://www.ilug-tvm.org You received this message because you are subscribed to the Google Groups "ilug-tvm" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For details visit the website: www.ilug-tvm.org or the google group page: http://groups.google.com/group/ilug-tvm?hl=en -~----------~----~----~----~------~----~------~--~---
