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Stefan Schaer 14-May-2008 16:12
IGSMAIL
Subject : [IGSMAIL-5771]: Model changes made at CODE (25515)
FROM . Stefan Schaer - stefan.schaer@aiub.unibe.ch
Date : 14-May-2008 16:12 -
To : igsmail@igscb.jpl.nasa.gov
- DOMES : 50109S001, 41505S007, 13235S001, 24901M002, 42003S003, 40451S005, 49805S001, 50208S003, 30310S001, 23904S001, 24901M002
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IGS Electronic Mail 14 May 07:09:48 PDT 2008 Message Number 5771
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Author: Stefan Schaer, Rolf Dach


Dear IGS colleagues,

A number of model changes/improvements was activated in CODE's IGS
analysis starting with GPS week 1477:

- Computer platform change from SunOS 5.9 to Linux, x86_64:

This change affects all of our IGS analysis processes, with the
exception of the ionosphere prediction and DCB combination procedures
(which are still running on the old platform and therefore caused
that corresponding product files were temporarily unavailable, but
are generated again in a nominal schedule).

The new computer system is more powerful and allowed us to implement
the following model refinements:

- Inclusion of all available NGA stations in our GNSS orbit and
ionosphere analysis:

This includes the following 12 stations:

S011/U012 St. Louis, US
S021/U022 50109S001 Salisbury, AU
S031/U032 41505S007 Buenos Aires, AR
S041/U042 13235S001 Hermitage, UK
S051/U052 24901M002 Manama, BH
S061/U062 42003S003 Quito, EC
S071/U072 40451S005 Washington, US
S101/U102 49805S001 Eielson AFB, US
S111/U112 50208S003 Wellington, NZ
S121/U122 30310S001 Pretoria, ZA
S131/U132 23904S001 Osan AB, KP
S141/U142 Tahiti, PF

Main stations are indicated with a leading S, backup stations with U.
Currently unavailable seem to be:

S021/U022
S041/U042
S051/U052

It is worth mentioning that BAHR is sharing its antenna with S051 and
U052 (indicated with identical M-type DOMES number):

BAHR 24901M002 Manama, BH

BAHR's antenna height of 3.1220 m is therefore adopted to S051 and
U052. All other height values are kept to 0.0000 m. Until a
definitive IGS naming convention (rcvr_ant.tab) is available, we use:
ASHTECH Z-XII3 / ASH700936B_M SNOW.

NGA stations start to appear in all our analysis products:
weekly SINEX (and analysis summary),
daily IONEX (P1-P2 DCB) results, and
daily clock RINEX files (starting with GPS week 1478).

- Setup of GNSS satellite antenna PCV parameters specific to each
individual satellite commenced (for later retrieval).

- Time resolution for EOP estimation increased internally (from 2 to
1 hr).
Note: The ERP results submitted to the IGS continue to be conform
with a time resolution of 1 day (24 hours).

Two new products are considered at CODE:

- Provision of phase-consistent high-rate (5-sec) GPS satellite clock
values.
Note: Submission of corresponding files (named CODwwwwd.CLK_05S.Z)
to the IGS data centers will start with GPS week 1478.

- Generation of GNSS rapid SINEX files containing station coordinates and
ERPs with a time resolution of 6 hours is foreseen as a contribution for
the IERS inter-technique combination.

The two mentioned new products are accessible at the common location of all
other CODE GNSS analysis products :

http://www.aiub.unibe.ch/download/CODE/
ftp://ftp.unibe.ch/aiub/CODE/

Best regards,

The CODE AC Team


From dmaggert at unavco.org Wed May 14 12:35:31 2008
From: dmaggert at unavco.org (David Maggert)
Date: Wed, 14 May 2008 13:35:31 -0600
Subject: [IGSMAIL-5772]: HOLC: station decommissioned
Message-ID: <482B3F03.3040209@unavco.org>

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IGS Electronic Mail 14 May 12:35:41 PDT 2008 Message Number 5772
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Author: David Maggert, UNAVCO

Dear Colleagues,

The Holcomb Ridge (HOLC) IGS station has been decommissioned. An updated site log has been
submitted to the IGS noting this change. The non-IGS replacement site is HOL3. The HOL3 data are
available from UNAVCO and SOPAC.

Best Regards,
David Maggert
UNAVCO Archive


From dmaggert at unavco.org Wed May 14 12:43:57 2008
From: dmaggert at unavco.org (David Maggert)
Date: Wed, 14 May 2008 13:43:57 -0600
Subject: [IGSMAIL-5773]: CAT1: station decommissioned
Message-ID: <482B40FD.3@unavco.org>

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IGS Electronic Mail 14 May 12:44:08 PDT 2008 Message Number 5773
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Author: David Maggert, UNAVCO

Dear Colleagues,

The Catalina (CAT1) IGS station has been decommissioned. An updated site log has been submitted to
the IGS noting this change. The non-IGS replacement site is CAT3. The CAT3 data are available from
UNAVCO and SOPAC.

Best Regards,
David Maggert
UNAVCO Archive