Re: speaking of gps

["Pantelis Giamarellos" <pantg@otenet.gr>]

David Hi,

You are dead right on your description about the almanac.
The way GPS is working is by defining the time elapsing between the
transmission and receipt of given signals provided by three at least
satellites to the GPS unit.

As for the accident you heard it is supposedly about an old gentleman
driving his BMW in a river because the voice of the navigation system said
"straight"

It has been in the q-list some time ago.

Regards and take care
Pantelis
-----Original Message-----
From: David G <daveglu@hotmail.com>
To: Pantelis Giamarellos <pantg@otenet.gr>; c a l i b a n
<caliban@sharon.net>; quattro <quattro@audifans.com>
Date: &Pgr;&agr;&rgr;&agr;&sgr;&kgr;&egr;&ugr;&eeacgr;, 29 &Ogr;&kgr;&tgr;&ohgr;&bgr;&rgr;&iacgr;&ogr;&ugr; 1999 9:08 &pgr;&mgr;
Subject: Re: speaking of gps


>
>I believe that all modern GPS units have no problem with Y2K.
>there was a "problem" with almanac data (rotation restart of position data
>for the geosynchronous satellites) back in August.
>
>
> My understanding is that the GPS has already had it's calendar reset (best
>term I can think of) and there was no problem.
>  Plus that and I have only heard one accident blamed on a GPS and that may
>have been urban legend
>  Old folks drive into water not noticing road ends and GPS mapping does
not
>say "wait for ferry".
>  Dave G
>