[IGSMAIL-5873]: status of IGS reprocessing activities

[Jim.Ray]

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IGS Electronic Mail      31 Dec 06:24:56 PST 2008      Message Number 5873
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Author: Jim Ray, Remi Ferland, Gerd Gendt

2008 has been a very good year for the IGS Reprocessing Campaign and the
New Year promises to deliver some finished results.  The considerable
progress can be reviewed at: http://acc.igs.org/reprocess.html

All eight final-product Analysis Centers have committed to participate,
together with submissions from three other related groups.  AC solutions
are in varying states of completion.  Files that are currently available
are posted in the weekly CDDIS product directories in the subdirectories
"repro1": ftp://cddis.gsfc.nasa.gov/gps/products/WWWW/repro1/

Combined reprocessing results will be released in two stages.  The first
results will consist only of weekly SINEX TRF and ERP combinations to submit
to the IERS for ITRF2008.  To satisfy the 10 February 2009 ITRF deadline, a
snapshot of the available AC weekly SINEX files is being used, which will
cover the reprocessed years 2000 - 2007 plus the IGS regular operational
solutions for 2008 (from week 1460 onward).

The resulting ITRF2008 should be released in mid-summer 2009 and will
form the basis for the next IGS reference frame (and an associated
updated atx file of antenna calibrations), probably to be adopted by
early 2010.

Meanwhile, the full Reprocessing Campaign 1 will continue to completion,
hopefully by the end of 2009.  It will cover the period 1994 - present
(including the regular operational solutions since 2007) and will
include combined SINEX, orbit, and clock products.  When finished and
checked, the present IGS Final operational products for the pre-2008
period will be replaced by the repro1 products to give a long-term consistent
and accurate set of combined products for the full history of the IGS.  This
change, probably in early 2010, will be well announced in advance.

Many thanks to the Analysis Centers and all other IGS components for their
efforts.  And best wishes for a very happy and successful New Year.