[time-nuts] GPS SPD field
Randy Warner
Randy at synergy-gps.com
Tue Aug 8 20:27:00 EDT 2006
Said,
Yeah, that sounds about right. Whatever it is, it's WAAAY down in the
noise, but it sure LOOKS good on a data sheet.
I had a similar problem several years ago where we were in danger of
losing a sale because the competing receiver (Raytheon Marine) was "so
much more stable" according to the customer. He was absolutely right. Of
course, if you put the unit in a dragster and ran a 6 second 1/4 mile
the GPS still thought it was looking at the Christmas Tree lights at the
starting line when you were finished and putting the dragster back in
the trailer... It was so heavily filtered it almost behaved like it was
in position hold mode.
Randy
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-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of SAIDJACK at aol.com
Sent: Tuesday, August 08, 2006 5:04 PM
To: time-nuts at febo.com
Subject: Re: [time-nuts] GPS SPD field
In a message dated 8/8/2006 14:23:31 Pacific Daylight Time,
Randy at synergy-gps.com writes:
Hi Randy,
if I remember right, the fourth digit is about 18cm in resolution?
Yeah, let's get 1.8cm resolution on the fifth digit!
bye,
Said
Said,
Yeah, I meant to mention that. You really just need to parse on the
commas and then figure out what was in between them. I have seen 2, 3,
4, and 5 place precision on varying receivers. I have to laugh at the
marketing weenie who thought 5 place precision would help him sell
standard, non-differential positioning receivers. Actually, advertising
5 place precision probably DID sell units to the technically
challenged.
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