[teqc] So long, partner. Gotta make tracks. (which here in the great American West means "Goodbye")

Andy Kubiak andy.kubiak at gmail.com
Thu Feb 28 11:09:21 MST 2019


Thank you, Lou!

Don't forget, no matter where you go, there you are.

On Thu, Feb 28, 2019 at 12:38 PM Henry Berglund <henry.berglund at gmail.com>
wrote:

>
>
> On Thu, Feb 28, 2019 at 7:39 AM Lou Estey <lou at unavco.org> wrote:
>
>>
>>        Farewell!  Adieu!  Auf Wiedersehen!  Au revoir!  Прощай!
>>       Adios!  さようなら!  再見!  Tchau!  Ha det!  Farvel!  Ciao!
>>
>> Today is my last day at UNAVCO.  At long last, I'm retiring!
>>
>> Designing, developing, extending, and maintaining teqc (which didn't even
>> have a real name
>> for most of its first year in 1996!) was only a part of my job, but even
>> so it has been an
>> exceptional honor and privilege to provide support to a world-wide
>> community of users for
>> over 23 years -- which, among other things, spanned two full Solar Cycles
>> (23 and 24),
>> seven leap second insertions, and, after GPS, SBAS, and GLONASS, the
>> addition of four more
>> GNSS constellations.  Talk about a wild ride.
>>
>> Although a few of its stars are now gone, this project of course would
>> have been impossible
>> without another constellation -- that being one of people:
>>
>> at UNAVCO:
>> - Chuck Meertens -- who thought I might be able to "make life better" for
>> the GPS user
>> community and hired me and then served as a vital "impedance to think
>> into" over the years
>> as we pondered and ironed out ideas together;
>>
>> - Chris Rocken, Jim Johnson, John Braun -- the core of the original
>> Fortran QC authors,
>> who provided much needed helpful feedback and constructive criticisms
>> about the qc code
>> component during its initial transformation from their Fortran code to my
>> C code;
>>
>> - Myron McCallum -- who understood that a universal tool that could read
>> a wide suite
>> of raw GPS formats and write out RINEX as well (in addition to performing
>> a quality
>> check on it all) would be a huge boon to the UNAVCO GPS archive project;
>>
>> - Stuart Wier -- who worked on the preliminary GLONASS orbit code and
>> wrote the
>> bulk of the current PDF teqc tutorial;
>>
>> - Freddy Blume, Henry Berglund, and many other UNAVCO engineers -- who
>> tested, suggested,
>> provided feedback, complained (?), etc. through the years;
>>
>> - Sarah Doelger -- who also provided the same great UNAVCO engineering
>> support as above,
>> plus was of immense help in proofreading and improving the teqc 'tips of
>> week' over the
>> past two years;
>>
>> - David Maggert, Fran Boler, and all the other members of our GPS/GNSS
>> archiving team -- who
>> constantly suggested little extra needs or improvements, and did a huge
>> amount of examination
>> of real data at it poured into the UNAVCO archive through teqc, then
>> found and reported edge cases;
>>
>> plus immense support from GNSS equipment manufacturers, engineers and
>> others, some of whom are:
>>
>> - Trimble: Brian Frohring, Keith Trider, Tim Peterson;
>>
>> - Septentrio: Jean-Marie Sleewaegen, Francesca Clemente, Thadeus Tuazon,
>> David Mertens, Jan Leyssens;
>>
>> - Javad: Sergey Organov, Oleg Tulabin, Vladimir Yefriemov;
>>
>> - Topcon: Dmitry Kolosov, Tom Morris, Alexei Zinoviev;
>>
>> - Leica: Frank Pache, Neil Brown, Justin Walford, Youssef Tawk, Lienhart
>> Troyer, James Stowell;
>>
>> - Navcom: Thadeus Tuazon, Kevin Dixon;
>>
>> - Magellan: Dmitriy Ivanov;
>>
>> - Ashtech: Robert Snow, Igor Artushkin, Dmitriy Ivanov, Dmitry Kozlov;
>>
>> plus major community supporters:
>>
>> - Jeff Freymueller, Mark Murray, Geoff Blewitt, Richard Langley, Jim Ray,
>> Giovanni Sella,
>> Nacho Romero, Neville Palmer, Ted Zhou, Kristine Larson, Dave Stowers,
>> Angie Moore,
>> Razmik Khachikyan, Bob King, Tom Herring, Carey Noll, David Sandwell,
>> Markus Ramatschi,
>> Markus Bradke, Oliver Montenbruck, Matt King, Hans van der Marel,
>> Ambrogio Maria Manzino,
>> Nobert Suard, Yuki Hatanaka, Hiromichi Tsuji, John Beavan, Herb Dragert,
>> Michael Schmidt,
>> and many, many others;
>>
>> and a very special "thank you" to:
>>
>> - Werner Gurtner, Univ. of Berne -- who was very patient with me early on
>> when I'd ask
>> questions or point out discrepancies in his mid-1990's RINEX
>> documentation, and, later on,
>> became a friend engaging in many technical, philosophical, and personal
>> discussions.
>> (We miss you, Werner.)
>>
>> Anyone who has been on this list for awhile needs no reminding that you
>> are part of
>> a large world-wide group of teqc users (including a couple dozen
>> engineers here at UNAVCO)
>> with which to confer, plus there are the on-line teqc resources at
>> https://www.unavco.org/software/data-processing/teqc/teqc.html
>> and past emails at https://postal.unavco.org//pipermail/teqc/ which now
>> includes over 100
>> 'tips of the week'.  And just running `teqc +help` outputs the various
>> command line options.
>>
>> A separate email from UNAVCO management will follow describing what the
>> path forward is going
>> to be.  (In the meantime you can execute `teqc +patton` for some humor
>> and/or inspiration --
>> an option which has been around since almost the beginning and has been
>> periodically updated;
>> it's in every version of teqc that you have and is perfectly safe: you
>> just execute teqc with
>> that one option ... or '-patton', whichever.)
>>
>> Hopefully, I've at least demonstrated the art of the possible, including
>> wrangling (*) all
>> GPS/GNSS formats that came into the UNAVCO archive (covering data going
>> back to 1986) with
>> a single, unified command line interface, providing simple ways of
>> examining that data, and
>> making that same interface available on a wide variety of operating
>> systems (which included
>> both big-endian and little-endian processors -- for those of you who know
>> what that means).
>> You've also benefited from my being a physicist and geophysicist, having
>> actually done field
>> work (including geodetic field work: GPS ground and helicopter campaign
>> work in and around
>> Yellowstone, and even helping to install a few PBO permanent sites,
>> including P197; see
>> tip of week 2025,
>> https://postal.unavco.org/pipermail/teqc/2018/002558.html), being
>> comfortable
>> with (and usually insisting upon) talking directly with engineers, and
>> essentially being
>> an interface that you could directly contact any time, any day, with
>> questions about teqc
>> and this whole complex GPS/GNSS technological rodeo -- for over two
>> decades.
>>
>> Here at the end, I thought perhaps a funny historical side note may be of
>> interest.  In the
>> fall of 1996 the first version of what was going to become known as
>> 'teqc' (which I coined
>> for 'translate, edit, quality check') was nearing a first limited
>> release, a name was yet to
>> be decided for it.  Up to that point I had been just referring to it
>> internally as 'rt' for
>> 'RINEX Tool' -- or, in my more cynical moments, as 'RINEX Analysis Tool'
>> or 'rat' -- but it
>> was increasingly clear that 'rt' didn't really capture what it was all
>> about.  Given that
>> the core quality check algorithms in it had come from the earlier UNAVCO
>> code 'QC' (for
>> 'quality check'), which itself was quite well known in the early and
>> mid-1990's, and given
>> that Chuck had first hired me to replace 'QC' with a more stable and
>> portable C or C++ code
>> base, Chuck suggested naming it 'QCplus'.  However, as you all should
>> know by now, the default
>> behaviour with no options is to try to read some input and output RINEX,
>> and in order to do a
>> quality check on the input you need to use the '+qc' option.  After
>> thinking about this
>> suggestion for about two seconds, I told Chuck there was no way in hell I
>> was going to spend
>> years explaining to people that in order to do a quality check one would
>> have to execute
>> the command `QCplus +qc ...` -- so then I came up with the 'teqc'
>> acronym.  (All true.)
>>
>> Well, partners, it's now time for me to saddle up and take off in search
>> of new adventures,
>> new challenges, and new horizons ...  Gotta ride.  Daylight's burning.
>>
>> cheers,
>> --lou
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Louis H. Estey, Ph.D.                                 (retired)
>>
>> "If the universe is the answer, what is the question?"
>>                                                 -- Leon Lederman
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> * That's the North American western use of the word 'wrangle'.
>>
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