[IGS-DCWG-26] Proposal concerning IGU product files of latest update

[Carey Noll]

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IGS-DCWG Mail      02 Nov 05:51:49 PST 2004      Message Number 26
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Author:  Carey Noll/CDDIS

Dear Colleagues,

   Angie suggested I forward this request to to the working group members
for comment.  Please forward any thoughss you may have to me  and I will be
sure to pass them on.

Thanks,
Carey.

+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Ms. Carey Noll  Manager, Crustal Dynamics Data Information System (CDDIS)
                                           Secretary, ILRS Central Bureau
Code 922                                     E-mail:  Carey.Noll at nasa.gov
NASA GSFC                                           Voice: (301) 614-6542
Greenbelt, MD 20771                                   Fax: (301) 614-6099
USA                  WWW:  http://cddisa.gsfc.nasa.gov/cddis_welcome.html
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---------- Forwarded message ----------
Date: Mon, 01 Nov 2004 11:48:24 +0100
From: Stefan Schaer <stefan.schaer at aiub.unibe.ch>
To: Gerd Gendt <gendt at gfz-potsdam.de>,
     igs central bureau <igscb at igscb.jpl.nasa.gov>
Cc: Noll Carey <noll at cddisa.gsfc.nasa.gov>,
     Angelyn W. Moore <Angelyn.W.Moore at jpl.nasa.gov>,
     elmar.brockmann at swisstopo.ch, Stefan.Schaer at swisstopo.ch
Subject: Proposal concerning IGU product files of latest update

Dear Gerd, dear IGS CB colleagues,

In my opinion, it would make sense to offer product files of the latest
ultra-rapid update (in addition) under time-invariant file names, or
addresses:

   igu.erp.Z
   igu.sp3.Z
   igu.sp3c.Z
   igu.sum.Z

99% of all IGU users (among them, e.g., swisstopo) are just interested
in the latest update (and they would like to keep their file download
scripts as simple as possible).

Following this proposal, the user could, if desired, directly download

ftp://igscb.jpl.nasa.gov/igscb/product/igu.erp.Z
ftp://igscb.jpl.nasa.gov/igscb/product/igu.sp3.Z
ftp://igscb.jpl.nasa.gov/igscb/product/igu.sp3c.Z
ftp://igscb.jpl.nasa.gov/igscb/product/igu.sum.Z

or

ftp://cddisa.gsfc.nasa.gov/pub/gps/products/igu.erp.Z
ftp://cddisa.gsfc.nasa.gov/pub/gps/products/igu.sp3.Z
ftp://cddisa.gsfc.nasa.gov/pub/gps/products/igu.sp3c.Z
ftp://cddisa.gsfc.nasa.gov/pub/gps/products/igu.sum.Z

or

ftp://ftp.gfz-potsdam.de/pub/igsacc/product/ultra/igu.erp.Z
ftp://ftp.gfz-potsdam.de/pub/igsacc/product/ultra/igu.sp3.Z
ftp://ftp.gfz-potsdam.de/pub/igsacc/product/ultra/igu.sp3c.Z
ftp://ftp.gfz-potsdam.de/pub/igsacc/product/ultra/igu.sum.Z

to get the current IGU information for NRT analysis (without dealing
with specific update rates and times, respectively, and without
considering older product file names for backup).

A corresponding implementation at IGS ACC, CDDIS, IGS CB should be very
simple.

At CODE, we already have a similar user-friendly solution:

http://www.aiub.unibe.ch/download/CODE/COD.EPH_U
http://www.aiub.unibe.ch/download/CODE/COD.ERP_U
http://www.aiub.unibe.ch/download/CODE/COD.SUM_U

Best regards,

Stefan Schaer