[time-nuts] Common-View GPS Network

Magnus Danielson magnus at rubidium.dyndns.org
Mon Apr 15 20:49:38 UTC 2013


Lachlan,

This would be fun to try with a few sites involved. It requires a fairly 
decent GPS and antenna at each location, and loging and then 
post-processing. Would be fun to see how well it can be made to perform.

Cheers,
Magnus

On 04/15/2013 02:55 PM, Lachlan Gunn wrote:
> Hello all.
>
>
>
> Having spent some time working over the last year on GPS time stability
> measurement, I'm keen to move onwards and upwards and have a go at
> common-view time transfer.  While my receivers are in the post, I have
> thinking about my next direction.  One thought that I have had is to try to
> write some software that can be used for real-time common-view (public if
> there is interest, but I am getting ahead of myself I think).
>
> My question to those in the know is whether they have found common-view to
> be useful over medium timescales (say, an hour or four).  My understanding
> is that after a day or so the GPS signal itself becomes usable as a
> standard, so building a network is probably not tremendously useful over
> these sorts of time periods, but looking at such as figure 6 of [1],
> common-view should still be useful between a few minutes and hours.  Has
> anyone here tried using such a method to produce their own short-term time
> scale, or is one better off just taking the simple route and tracking GPS
> time directly?
>
>
>
> Thanks,
>
> Lachlan
>
>
>
>
>
> [1] http://www.pttimeeting.org/archivemeetings/2008papers/paper45.pdf
>
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