Mikael Abrahamsson wrote:
On Wed, 20 Jul 2005, Andre Oppermann wrote:
To sum it up: Using GPS to geo-locate VoIP phones or adapters is
broken by design.
No, it isn't. Relying on satellite connectivity to do so broken, but
that's not how it works anymore. Did you even read the article regarding
indoor GPS that I posted earlier in the thread?
I did but those ground based transmitters are only for improving accuracy
by sending you the position delta determined vs. real for that region. It
doesn't help if you don't receive a GPS signal. That ain't satellite radio
which is being terristrically re-broadcast.
For more information have a look the descriptions of these augumented GPS
systems:
http://en.wikipedia.org/wiki/GPS#Techniques_to_improve_GPS_accuracy
http://en.wikipedia.org/wiki/Trilateration
To sum it up: Without having good GPS reception you can't do trilateration
and without it you can't apply any accuracy improvements.
--
Andre