bpbrox
Wed Jun 25 03:41:19 CDT 2008
Catalin Lungu skrev:
> Hi all,
> I need to know how it's works gps tracking. I supose that the mobile
> device read gps coordinates and send them to an server through gprs.
> It's true?
Correct, but you can change the word gprs to "whatever network interface
that is available (3G, wifi etc.)", - if you are not sending to often or
other network options is not available the system can send the
coordinates by SMS.
You can also track a GPS device my using triangulation, but the
precision is low (but getting better).
http://en.wikipedia.org/wiki/GSM_localization
--
Bjørn Brox