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Date: Thu, 12 Feb 2009 13:16:59 -0600
Message-ID: <6CBE15DABCBB6E419CD2B50ACBF5B5F7BA8EC3@NDMSEVS36B.ndc.nasa.gov>
Thread-Topic: Availability of the first IDS DORIS Combination Series for ITRF2008
Thread-Index: AcmNRno1/CMo+GjQTiGM9Q13cuim+Q==
From: "Lemoine, Frank G. (GSFC-698.0)" <Frank.G.Lemoine@nasa.gov>
To: <ids.analysis.forum@cls.fr>
Subject: [ids.analysis.forum] Availability of the first IDS DORIS
 Combination Series for ITRF2008

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Dear colleagues-

A first IDS weekly combined solution series has been produced as a DORIS co=
ntribution to the ITRF2008 call for participation.  From now, it is limited=
 to the period 2003-2008  but it will be extended up to 1993 soon. The pres=
ent combination is based on the contributions of six analysis centers - GOP=
 (Geodetic Observatory Pecny); INASAN (Institute for Astronomy Russian Acad=
emy of Sciences); LCA; IGN; GAU (Geoscience Australia), and ESA (European S=
pace Operations Center).=20=20=20

The Combination SINEX files are available at:=20
ftp://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_snx/=20=20

A very preliminary cumulative IDS solution has been generated by stacking a=
ll the combined solutions where WRMS, origin and scale time series WRT ITRF=
2005 are shown in the following plot:=20=20
  http://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_snx/t7p_comb.gif.

More information about the IDS ACs participation is available at:
 http://ids.cls.fr/html/analysis_coord/combination/itrf2008.html

We remind the DORIS Analysts that the next IDS AWG is planned in Paris on M=
arch 23-24, 2009. At this meeting we will review the progress on the contri=
butions of the analysis centers, the status of the IDS combination, and con=
sider among other topics in particular the  abrupt change  in the scale of =
the IDS combination with respect to ITRF2005 in late 2004.

Regards

JJ. Valette, F. Lemoine and P. Ferrage

=20

=20=20

---------------------------------------------------------------------------=
------------------------------------------------------

   Jean-Jacques VALETTE (jvalette@cls.fr)
   CLS - COLLECTE LOCALISATION SATELLITES
   8-10, Rue Herm=E8s
   Parc Technologique du Canal
   31520 Ramonville St-Agne, FRANCE
   Tel (+33) 05.61.39.47.62
   Fax (+33) 05.61.39.48.06
   www.cls.fr

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<P><FONT SIZE=3D2>Dear colleagues-<BR>
<BR>
A first IDS weekly combined solution series has been produced as a DORIS co=
ntribution to the ITRF2008 call for participation.&nbsp; From now, it is li=
mited to the period 2003-2008&nbsp; but it will be extended up to 1993 soon=
. The present combination is based on the contributions of six analysis cen=
ters - GOP (Geodetic Observatory Pecny); INASAN (Institute for Astronomy Ru=
ssian Academy of Sciences); LCA; IGN; GAU (Geoscience Australia), and ESA (=
European Space Operations Center).&nbsp;&nbsp;<BR>
<BR>
The Combination SINEX files are available at:<BR>
<A HREF=3D"ftp://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_snx/">ft=
p://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_snx/</A>&nbsp;<BR>
<BR>
A very preliminary cumulative IDS solution has been generated by stacking a=
ll the combined solutions where WRMS, origin and scale time series WRT ITRF=
2005 are shown in the following plot:&nbsp;<BR>
&nbsp; <A HREF=3D"http://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_=
snx/t7p_comb.gif">http://ftp.cls.fr/pub/ids/combinations/ITRF2008-IDS/comb_=
snx/t7p_comb.gif</A>.<BR>
<BR>
More information about the IDS ACs participation is available at:<BR>
&nbsp;<A HREF=3D"http://ids.cls.fr/html/analysis_coord/combination/itrf2008=
.html">http://ids.cls.fr/html/analysis_coord/combination/itrf2008.html</A><=
BR>
<BR>
We remind the DORIS Analysts that the next IDS AWG is planned in Paris on M=
arch 23-24, 2009. At this meeting we will review the progress on the contri=
butions of the analysis centers, the status of the IDS combination, and con=
sider among other topics in particular the&nbsp; abrupt change&nbsp; in the=
 scale of the IDS combination with respect to ITRF2005 in late 2004.<BR>
<BR>
Regards<BR>
<BR>
JJ. Valette, F. Lemoine and P. Ferrage<BR>
<BR>
<BR>
<BR>
&nbsp;<BR>
<BR>
---------------------------------------------------------------------------=
------------------------------------------------------<BR>
<BR>
&nbsp;&nbsp; Jean-Jacques VALETTE (jvalette@cls.fr)<BR>
&nbsp;&nbsp; CLS - COLLECTE LOCALISATION SATELLITES<BR>
&nbsp;&nbsp; 8-10, Rue Herm=E8s<BR>
&nbsp;&nbsp; Parc Technologique du Canal<BR>
&nbsp;&nbsp; 31520 Ramonville St-Agne, FRANCE<BR>
&nbsp;&nbsp; Tel (+33) 05.61.39.47.62<BR>
&nbsp;&nbsp; Fax (+33) 05.61.39.48.06<BR>
&nbsp;&nbsp; www.cls.fr</FONT>
</P>

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