[time-nuts] WWVB & Eclipse

[William H. Fite]

Did I put my foot in it? It was a sincere question.


On Thursday, July 13, 2017, Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> I think we are both taking it as a given that the eclipse’s impact on the
> ionosphere will
> be “visible” even with a fairly simple setup. I guess that might qualify
> for a very loose
> definition of the term “hypothesis” in my case. I can’t speak for Tom.
>
> Bob
>
> > On Jul 13, 2017, at 6:24 PM, William H. Fite <omniryx at gmail.com
> <javascript:;>> wrote:
> >
> > 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
> <javascript:;>> 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:;> <javascript:;>>
> >> To: "Tom Van Baak" <tvb at leapsecond.com <javascript:;> <javascript:;>>;
> "Discussion of
> >> precise time and frequency measurement" <time-nuts at febo.com
> <javascript:;> <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:;>
> <javascript:;>>
> >>> To: "Discussion of precise time and frequency measurement" <
> >> time-nuts at febo.com <javascript:;> <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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> >>
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> >>
> >
> >
> > --
> > William H Fite, PhD
> > Independent Consultant
> > Statistical Analysis & Research Methods
> > _______________________________________________
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-- 
William H Fite, PhD
Independent Consultant
Statistical Analysis & Research Methods