Thanks for all the responses.
I've also had a response from uBlox support informing me that the
TimePulse accuracy will degrade (both due to motion and of course due to
multipath, weak signals etc. - datasheet accuracy figures are for
reasonable/optimal conditions). The uBlox module has a T Ac
:11:19
To: Discussion of precise time and frequency measurement
Reply-To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Motion effects on accuracy of GPS pps
Thanks for the response Björn. Also thanks to Didier Juges for pointing
out that this has been covered on
> As you line up you pseudo-ranges you now have to solve only the T
> variable rather than the XYZT position. This means that all
> pseudo-ranges is available for solving the T solution and reducing the
> TDOP error. The T-RAIM is also able to drop more false-tickers.
>
> For receivers not having
On 06/29/2010 10:32 AM, b...@lysator.liu.se wrote:
Hi Daniel,
Hi,
I've recently completed a GPSDO using the pps output of a uBlox Antaris
TIM4 GPS module to discipline a 10MHz OCXO. I'm now investigating the
motion effects (acceleration/uniform velocity) on the accuracy of the
time-pulse and h
> Thanks for the response Björn. Also thanks to Didier Juges for pointing out
> that this has been covered on a previous thread. I'll go and find it in the
> history.
Somebody setup a good oscillator on a pendulum. They could measure the
frequency shift as G changed slightly.
There have been
der at
http://www.mail-archive.com/time-nuts@febo.com/msg08038.html
You can scroll back and forth from there, the thread drifted quite a bit but
was fascinating, at least to me :)
Didier
--Original Message--
From: Daniel Davson
To: Didier Juges via Cox
Subject: Re: Re: [time-nuts] Motion
le I do
other things...
-Original Message-
From: Daniel Davson
Sender: time-nuts-boun...@febo.com
Date: Tue, 29 Jun 2010 15:11:19
To: Discussion of precise time and frequency measurement
Reply-To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Mot
AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Motion effects on accuracy of GPS pps
Hi Daniel,
> Hi,
>
> I've recently completed a GPSDO using the pps output of a uBlox
> Antaris
> TIM4 GPS module to discipline a 10MHz OCXO. I'm now inves
Thanks for the response Björn. Also thanks to Didier Juges for pointing
out that this has been covered on a previous thread. I'll go and find it
in the history.
Unfortunately the device will be used in urban areas so some multipath &
obstruction of skyview is expected. I've just done some test
Subject: [time-nuts] Motion effects on accuracy of GPS pps
Hi,
I've recently completed a GPSDO using the pps output of a uBlox Antaris
TIM4 GPS module to discipline a 10MHz OCXO. I'm now investigating the
motion effects (acceleration/uniform velocity) on the accuracy of the
time-pulse
Hi Daniel,
> Hi,
>
> I've recently completed a GPSDO using the pps output of a uBlox Antaris
> TIM4 GPS module to discipline a 10MHz OCXO. I'm now investigating the
> motion effects (acceleration/uniform velocity) on the accuracy of the
> time-pulse and hence on my frequency output.
Are you movin
Hi,
I've recently completed a GPSDO using the pps output of a uBlox Antaris
TIM4 GPS module to discipline a 10MHz OCXO. I'm now investigating the
motion effects (acceleration/uniform velocity) on the accuracy of the
time-pulse and hence on my frequency output.
I've been unable to find any de
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