The FAA (the US civilian Aeronautics board) is planning
on installing 'local' monitors that will verify the
accuracy of GPS transmissions in an area (like an aerodome)
and transmit this 'status' through some local means - they
will take nothing for granted regarding position
determination ...

There are reports in some newsgroups/egroups of *wild*
speed and location errors - usually temporary - but they
can and seemingly do occur ... I have seen one instance
of this myself - and now WISH I had logged the data stream
issueing forth from the unit!

So your question about 'errors' and are they constant - well,
I guess the answer would have to be no ...

RF Jim


----- Original Message -----
From: "Chris Loiacono" <chris@MAIL2ASI.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, November 19, 2002 3:38 PM
Subject: Re: [OT] While on the subject of GPS...


> Does the error of a standard GPS receiver affect it's ability to determine
a
> vehicle's or vessel's speed accurately, or is it safe to assume that the
> error will be constant and the speed it reports will be accurate?
>
> TIA,
> Chris
>
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