[time-nuts] question about multi-way measurement

[Bob kb8tq]

Hi

There also are a lot of papers going back a ways by Jim Barnes and 
David Alan (sometimes together and sometimes separately)  related 
to multiple clocks driving a single “estimate” of what time it actually is. 

Bob

> On Dec 27, 2018, at 2:34 PM, Steve Allen <sla at ucolick.org> wrote:
> 
> On Wed 2018-12-26T10:30:24-0600 Chris Howard hath writ:
>> I see the different forms of deviation measurements and they are all
>> one-to-one comparisons.
>> 
>> Is there anything to be learned from doing mass data gathering?
> 
>> So, has this sort of thing been done?
>> Why is everything one-to-one only?
> 
> Doing this was the reason for the creation of the Bureau International
> de l'Heure (BIH) a century ago.  The initial announcement of their
> work invited observatories around the world to participate via
> correspondence sending the received times of radio time signals.
> http://adsbit.harvard.edu/full/1922BuBIH...1....1.
> 
> A few years later they presented to the 1928 General Assembly of the
> IAU a complete history of timekeeping and an inventory of their
> equipment including the clocks at l'Observatoire de Paris which were
> located down in the catacombs to maintain stable conditions
> http://adsbit.harvard.edu/full/1929BuBIH...3..255.
> 
> The progression of issues of Bulletin Horaire shows the development of
> technologies and techniques for intercomparing clocks from the age of
> pendulum clocks with constant pressure cases into the age of atomic
> chronometers.  At the retirement of two long-time staffers they
> published plots of the improvement of timekeeping from 1922 to 1964.
> https://www.ucolick.org/~sla/leapsecs/annastoyko.html
> 
> --
> Steve Allen                    <sla at ucolick.org>              WGS-84 (GPS)
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