[time-nuts] NIST

[Azelio Boriani]

Maybe this one is equivalent?
<http://freqelec.com/gps_gnss/waas_for_telecom_2-07.pdf>
On Fri, Aug 31, 2018 at 4:55 PM Attila Kinali <attila at kinali.ch> wrote:
>
> On Thu, 30 Aug 2018 18:54:17 -0700
> Brooke Clarke <brooke at pacific.net> wrote:
>
> > I wonder if anyone has tried using a small parabolic dish, like used for Free To Air satellite TV and aimed it at a GPS
> > satellite track or at a WAAS geostationary satellite using a feed antenna with reverse polarization from a normal GPS
> > antenna?
>
> I have somewhere a paper (which i cannot find currently, sorry) that
> used a dish trained at one of the EGNOS satellites and used it as the
> only source for timing. IIRC the results were promising, but not
> spectacular. The problem being that all the ionospheric and tropospheric
> effects limited the performance, which also could not be averaged
> over several satellites. Hence most people today focus on whole
> constelation systems and try to get the best out of that, even under
> multipath and jamming.
>
>                         Attila Kinali
>
> --
> It is upon moral qualities that a society is ultimately founded. All
> the prosperity and technological sophistication in the world is of no
> use without that foundation.
>                  -- Miss Matheson, The Diamond Age, Neal Stephenson
>
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