[time-nuts] WWVB & Eclipse

[William H. Fite]

Tom, are some specific hypotheses being tested or is this purely
exploratory?

Bill


On Thursday, July 13, 2017, Tom Van Baak <tvb at leapsecond.com> wrote:

> The trick is to just run the timing receiver in all-in-view mode
> collecting 1PPS data against your house standard as usual, but also capture
> all the binary message(s) where the per-SV Az/El/SNR and phase residuals
> are reported. This allows you to re-create the individual "1PPS" from each
> SV used in the timing solution. Or maybe just use the RINEX data. This is
> what I was referring to in the CORS reference to Brooke.
>
> It would be "cheating" to know the eclipse path ahead of time and mine the
> data for confirmation. Instead I dare you to blindly mine the GPS data for
> all of August and then make a bold claim when and where the eclipse was,
> like capturing a trace through a cloud chamber. Having done all that you
> can "look in the back of the book" for the actual eclipse path to see how
> right you were.
>
> /tvb
>
> ----- Original Message -----
> From: "Bob kb8tq" <kb8tq at n1k.org <javascript:;>>
> To: "Tom Van Baak" <tvb at leapsecond.com <javascript:;>>; "Discussion of
> precise time and frequency measurement" <time-nuts at febo.com <javascript:;>
> >
> Sent: Thursday, July 13, 2017 3:01 PM
> Subject: Re: [time-nuts] WWVB & Eclipse
>
>
> Hi
>
> If one perhaps knew the path of the eclipse in advance *and* had a GPS
> timing receiver that
> could be set somehow to look at a single satellite….. all one would need
> is a means of comparing
> the output to a stable reference to *possibly* observe something
> interesting.
>
> More or less: You know the path of eclipse roaring along bashing the
> ionosphere. You can (maybe)
> pick a sat who’s signal traverses that region while getting to your
> location during the eclipse. Yes, it’s
> not original science. It might still be fun.
>
> Bob
>
>
>
> > On Jul 13, 2017, at 5:55 PM, Tom Van Baak <tvb at LeapSecond.com> wrote:
> >
> > Brooke,
> >
> > Nice set of links. Thanks. There's a poster here with an overview:
> >
> > https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_
> Moses-Eclipse_Research_CEDAR_Poster.pdf
> >
> >> Is there a study based on GPS observations?
> >
> > It will all be there for free in CORS. It's just a matter of mining the
> data.
> > Apparently this is done a lot. Here are some random examples of what can
> be done. Pretty amazing.
> >
> > https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
> > http://www.gps.gov/cgsic/smg/2004/smith.pdf
> > https://arxiv.org/pdf/1006.3565.pdf
> >
> > Google for a subset of words like: CORS Ionosphere Monitoring Analysis
> Modeling TEC
> >
> > /tvb
> >
> > ----- Original Message -----
> > From: "Brooke Clarke" <brooke at pacific.net <javascript:;>>
> > To: "Discussion of precise time and frequency measurement" <
> time-nuts at febo.com <javascript:;>>
> > Sent: Thursday, July 13, 2017 1:35 PM
> > Subject: [time-nuts] WWVB & Eclipse
> >
> >
> >> Hi:
> >>
> >> There's a massive experiment relating to the strength of WWVB and a
> transmitter in Dixon California.
> >>
> >> https://www.washingtonpost.com/news/speaking-of-science/
> wp/2017/07/12/a-massive-atmospheric-experiment-is-
> planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
> >>
> >> http://eng.umb.edu/~eclipsemob/index.php <http://eng.umb.edu/%
> 7Eeclipsemob/index.php>
> >>
> >> http://www.hamsci.org/sites/default/files/publications/
> 2017_IES_Liles.pdf
> >> This article says Dixon may transmit at 55.1 and 135.95 kHz.
> >>
> >> The EclipseMob receiver works with a smart phone acting as an SDR. as
> well as the source of it's position and the
> >> date-time of observation.
> >>
> >> There is a parallel study based on ham radio WSPRNet and Reverse Beacon
> Network.
> >> http://hamsci.org/
> >>
> >> Is there a study based on GPS observations?
> >>
> >> --
> >> Have Fun,
> >>
> >> Brooke Clarke, N6GCE
> >> http://www.PRC68.com
> >> http://www.end2partygovernment.com/2012Issues.html
> >>
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-- 
William H Fite, PhD
Independent Consultant
Statistical Analysis & Research Methods