[IGSREPORT-3644] Wk 0897 EUREF Analysis Report
T.A.
T.A.
Wed Apr 16 05:52:46 PDT 1997
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IGS Electronic Report Wed Apr 16 5:52:46 PDT 1997 Message Number 3644
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Author: T.A. Springer
Subject: Wk 0897 EUREF Analysis Report
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EUREF REPORT FOR GPS WEEK 0897 (DAYS 075-081, DATES 16-03-97 - 22-03-97)
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Report of the combination of the European weekly GPS solutions
International Association of Geodesy
Commission X - Global and Regional Geodetic Networks
Subcommission for Europe (EUREF)
Contributing Solutions:
-----------------------
Group Description Contribution
ASI - Nuova Telespazio S.p.A., Space Geodesy Center SINEX
BEK - International Commission for Global Geodesy of SINEX
the Bavarian Academy of Sciences (BEK)
COE - European solution created at CODE SINEX
(Center for Orbit Determination in Europe)
GOP - Geodetic Observatory Pecny, Czech Republic SINEX
IFG - Institute for Applied Geodesy in Germany (IfAG) SINEX
LPT - Bundesamt fuer Landestopographie (L+T), Switzerland SINEX
NKG - Nordic Geodetic Commision (NKG) SINEX
OLG - Observatory Lustbuehel Graz (OLG) SINEX
ROB - Royal Observatory of Belgium (ROB) SINEX
WUT - Warsaw University of Technology (WUT) SINEX
SINEX: Software independent exchange format Version 0.05 or 1.00
Submitted by: Center for Orbit Determination in Europe (CODE)
Astronomical Institute, University of Berne, Switzerland
Contact : T.A. Springer (springer at aiub.unibe.ch)
Products available through anonymous ftp using:
A) ftp ubeclu.unibe.ch -or- ftp 130.92.6.11
after login: cd aiub$ftp; cd euref
B) ftp igs.ifag.de -or- ftp 141.74.240.26
after login: cd pub/EUREF/CLUSTERS/wwww (GPS week wwww)
C) ftp ftpserver.oma.be -or- ftp 193.190.249.203
after login: cd pub/astro/euref/product/combin
Processing Strategy:
--------------------
- The combined weekly EUREF solution (EUR) was created after removing the
Analysis Center specific constraints.
- Covariance rescaling factors are derived from the sampling rate used by
each center.
In fact all solutions contribute to the combined solution with the same
weight.
For ASI we use a rescaling factor which is a compromise between the
estimated formal rms of the vertical components and the horizontal
components. In comparison to the other solutions we find larger horizontal
formal rms values (probably no ambiguity resolution) but smaller vertical
rms values (probably lower elevation cut-off).
Starting with week 0897 the rescaling is changed to give the resulting
EUREF solution a more realistic formal errors.
- We perform free network solutions, specifying 6 no-net translation and
rotation constraints to define the geodetic datum of the combined solution.
We use the ITRF93 coordinates (up to GPS week 0859) respectively
the ITRF94 coordinates (since GPS week 0860) of the sites BRUS, KOSG, TROM,
MATE, WTZR, GRAZ and ZIMM to align the free solutions with the terrestrial
reference frame.
Starting with week 0897 METS and VILL were added to define the reference
frame.
- The comparisons between each individual solution and the combined solution
is done using a 7-parameter Helmert transformation. The Helmert parameters
are determined using all sites of the individual solutions.
- In the first Table unweighted rms values (for the coordinate components in
the local system North-East-Up), derived from the Helmert residuals, are
shown for each site.
- In the second table an (unweighted) rms is computed for each Analysis Center.
These values are derived from the Helmert residuals of all sites of a
particular Analysis Center.
AVAILABLE FILES:
-----------------------------------------------------------------------------
EUR08977.SUM THIS TEXT FILE
EUR08977.SNX COMBINED EUROPEAN SOLUTION FOR GPS WEEK 0897
-----------------------------------------------------------------------------
REMARKS: -
COMBINATION GPSWEEK 0897, EUROPE
-------------------------------------------------------------------------------
PROCESSED FILES : 10
TOTAL NUMBER OF STATIONS: 53
-------------------------------------------------------------------------------
0000000001 RESIDUAL RMS IN MM
STATION #FILES 1234567890 N E U
-------------------------------------------------------------------------------
CAGL 12725M003 3 MMM 1.1 1.3 3.5
MATE 12734M008 5 NNN N N 0.9 1.3 4.2
MEDI 12711M003 4 MMM M 0.8 0.3 4.7
NOTO 12717M003 3 MMM 1.8 0.8 5.1
VENE 3 MM M 1.2 0.4 9.3
WTZR 14201M010 9 N NNNNNNNN 1.0 1.5 4.6
ANKR 20805M002 3 MM M 1.8 1.4 15.4
GRAS 10002M006 4 MM M M 0.3 0.3 2.9
EBRE 13410M001 2 MM 0.2 0.7 8.2
MASP 31303M002 2 MM 0.5 3.5 4.3
SFER 13402M004 2 MM 1.6 2.0 8.1
VILL 13406M001 2 NN 0.6 1.5 17.9
ZIMM 14001M004 5 NN N NN 0.4 0.4 3.0
UPAD 12750M002 5 MM MMM 0.5 1.4 3.3
BOR1 12205M002 3 M M M 0.2 0.1 2.5
KOSG 13504M003 6 N NNN NN 0.7 2.3 2.2
BRUS 13101M004 4 N N N N 0.9 2.6 5.6
BOGO 4 MM M M 1.1 0.8 3.7
JOZE 12204M001 5 MM MM M 1.4 4.6 4.8
GOPE 11502M002 4 MM M M 2.0 2.3 3.4
GRAZ 11001M002B 5 NNNN N 0.9 0.9 3.3
HFLK 11006S003B 3 M M M 0.4 0.7 5.5
HERS 13212M007 4 M M M M 1.3 2.4 2.9
KIRU 10403M002 2 M M 0.5 1.2 5.0
METS 10503S011 5 NNN N N 1.4 1.4 6.1
NYAL 10317M001 2 M M 2.8 4.9 5.3
ONSA 10402M004 5 MMM M M 0.6 4.1 4.0
POTS 14106M003 5 M M MMM 0.2 2.3 3.9
REYK 10202M001 3 M M M 3.3 4.0 10.2
LAMA 12209M001 3 M M M 0.2 0.4 8.8
MDVO 12309M002 3 MM M 1.3 0.4 8.5
PENC 11206M006 3 M M M 0.4 0.7 5.0
KELY 43005M001 2 M M 4.5 2.3 5.9
ZWEN 12330M001 3 MMM 1.0 1.0 4.5
MOPI 3 M M M 2.2 2.2 6.4
OBER 14208M001 2 M M 2.4 1.2 4.4
WROC 3 M M M 0.1 0.6 5.7
STAV 1 M - - -
JOEN 1 M - - -
KIR0 1 M - - -
VIS0 1 M - - -
VAAS 1 M - - -
VIL0 1 M - - -
VARD 1 M - - -
TRON 1 M - - -
MAR6 1 M - - -
OSLO 1 M - - -
RIGA 1 M - - -
SODA 1 M - - -
SVTL 1 M - - -
DENT 13112M001 1 M - - -
DOUR 13113M001 1 M - - -
DELF 13502M004 1 M - - -
-------------------------------------------------------------------------------
FLAGS: M: MEAN, F: FIXED, N: FREE NETWORK RESTRICTIONS
1
-------------------------------------------------------------------------------
UNWEIGHTED RMS VALUES WITH RESPECT TO THE COMBINED SOLUTION IN MM
-------------------------------------------------------------------------------
PROCESSED FILES : 10
TOTAL NUMBER OF STATIONS: 53
-------------------------------------------------------------------------------
FILE GRP #SITES COV.COMP. COMPONENT RMS
---------------------------------------------------
N 1.1
1 ASI 6 0.0080 E 0.9
U 2.2
---------------------------------------------------
N 0.5
2 BEK 13 0.0200 E 0.6
U 7.2
---------------------------------------------------
N 1.1
3 COE 33 0.0200 E 1.3
U 5.3
---------------------------------------------------
N 2.0
4 GOP 11 0.0200 E 1.7
U 3.0
---------------------------------------------------
N 0.9
5 IFG 14 0.0200 E 1.8
U 7.0
---------------------------------------------------
N 0.3
6 LPT 6 0.0200 E 0.3
U 1.8
---------------------------------------------------
N 1.4
7 NKG 25 0.0200 E 3.3
U 3.3
---------------------------------------------------
N 0.5
8 OLG 17 0.0200 E 0.8
U 4.5
---------------------------------------------------
N 0.1
9 ROB 10 0.0200 E 0.2
U 1.8
---------------------------------------------------
N 0.8
10 WUT 15 0.0200 E 1.0
U 4.8
---------------------------------------------------
N 1.0
MEAN 53 E 1.7
U 4.6
[Mailed From: Brockmann Elmar <BROCKMANN at aiub.unibe.ch>]
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