(Just thinking out loud)
I would use a PIC to simply record co-ordinates in the moving target ever
say.. 2/3 minutes and do a data dump back to base station using SMS every
hour. The base unit  would also want to communicate with the target using
SMS to query it to get its' current position.

It maybe simpler to just query the moving target at intervals as required.

Now if something like this already exist, can anyone let me know where I can
buy one?

Does this sound feasible?
z


----- Original Message -----
From: "Herbert Graf" <mailinglist@FARCITE.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: 21 March 2003 19:02
Subject: Re: [OT]: GPS data tranmission


> > I just wondered what options are available to get a GPS co-ordinate
> > collected in a moving vehicle back to a central base. Maybe a
> > mobile phone,
> > PMR (Public Mobile Radio) or pagers that have 2 way comms? Like a
tracking
> > device but could initiated by the driver or automatically. I am thinking
> > specifically for the UK. This is not for production but for personal
use.
> > TIA for any replies
>
>         What kind of update rate are you looking for. Offhand, if you want
a low
> update rate, you could use a GSM phone in the car calling a pager at the
> other location. TTYL
>
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