Subject: [IGSREPORT-3395] Wk 0886 EUREF Analysis Report
From: T.A. Springer
Date: Tue, 28 Jan 1997 6:22:48 PST

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IGS Electronic Report    Tue Jan 28  6:22:48 PST 1997      Message Number 3395
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Author: T.A. Springer
Subject: Wk 0886 EUREF Analysis Report

 *******************************************************************************
 EUREF REPORT FOR GPS WEEK 0886 (DAYS 364-004, DATES 29-12-96 - 04-01-97)
 *******************************************************************************
 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)
 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 ([email-masked])
 
 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).
 - 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, MADR,
   MATE, WETT, GRAZ and ZIMM to align the free solutions with the terrestrial 
   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:
 -----------------------------------------------------------------------------
 EUR08867.SUM           THIS TEXT FILE
 EUR08867.SNX           COMBINED EUROPEAN SOLUTION FOR GPS WEEK 0886
 -----------------------------------------------------------------------------
 
 REMARKS: - The site SODA from the center NKG was excluded

 COMBINATION GPSWEEK 0886, EUROPE                       
 -------------------------------------------------------------------------------
 PROCESSED FILES         :     9
 TOTAL NUMBER OF STATIONS:    54
 -------------------------------------------------------------------------------
                                                                                
                                 RESIDUAL RMS IN MM                             
 STATION       #FILES 123456789     N     E     U                               
 -------------------------------------------------------------------------------

 CAGL 12725M003     3 MMM         0.6   1.1   2.7
 MATE 12734M008B    5 MMMM    M   0.9   1.5   3.0
 MEDI 12711M003     4 MMM   M     0.6   1.1   2.8
 NOTO 12717M003     3 MMM         1.2   0.3   1.8
 VENE      M        2 MM          0.8   2.3  11.0
 WTZR 14201M010     8 N NNNNNNN   0.5   0.8   3.3
 MADR 13407S012C    4 NNNN        0.4   1.0   6.1
 ANKR 20805M002     3  MMM        2.1   2.9   3.9
 ZIMM 14001M004     5  NN N NN    0.6   0.3   5.6
 EBRE 13410M001     2  MM         0.6   0.9   6.1
 VILL 13406M001     2  MM         0.4   1.5   5.2
 MASP 31303M002     2  MM         1.0   2.7   9.1
 UPAD 12750M002     4  MM M M     0.6   0.5   3.5
 GRAS 10002M006B    5  MM M MM    0.9   0.2   3.4
 SFER 13402M004     2  MM         0.6   1.3   4.8
 BOR1 12205M002     3   M   M M   0.3   0.4   2.4
 KOSG 13504M003     6   NNNN NN   0.5   1.2   1.8
 BRUS 13101M004     4   NN N N    0.7   1.6   2.7
 BOGO               3   M   M M   0.6   0.3   3.0
 GOPE 11502M002     3   M   M M   0.4   0.5   4.1
 GRAZ 11001M002     4   NNN N     0.3   0.6   1.4
 HERS 13212M007     4   MM M M    0.8   2.7   3.1
 JOZE 12204M001     4   M  MM M   1.3   4.0   3.4
 KIRU 10403M002     1   M           -     -     -
 NYAL 10317M001     2   M  M      1.7   0.9   4.2
 METS 10503S011     4   MM M  M   2.6   0.8   6.4
 POTS 14106M003     5   MM MMM    0.7   0.6   2.8
 REYK 10202M001     3   NN N      2.7   2.2   3.4
 LAMA 12209M001     3   M   M M   0.7   0.5   4.5
 ZWEN 12330M001     2   MM        1.7   0.4   5.0
 MDVO 12309M002     2   M     M   1.0   0.3   5.0
 THU1 43001M001     2   M  M      2.8   3.4   0.9
 ONSA 10402M004     4   MM M  M   0.7   1.8   5.2
 PENC 11206M006     3   M   M M   0.6   0.6   2.4
 TROM 10302M003     2   N  N      1.6   1.5   5.8
 KELY 43005M001     2   M  M      1.5   0.8   5.4
 STAV               1      M        -     -     -
 JOEN               1      M        -     -     -
 KIR0               1      M        -     -     -
 VIS0               1      M        -     -     -
 TRON               1      M        -     -     -
 MAR6               1      M        -     -     -
 VIL0               1      M        -     -     -
 VARD               1      M        -     -     -
 OSLO               1      M        -     -     -
 RIGA               1      M        -     -     -
 SVTL               1      M        -     -     -
 VAAS               1      M        -     -     -
 MOPI               2       M M   0.8   0.1   7.2
 DENT 13112M001     1        M      -     -     -
 DOUR 13113M001     1        M      -     -     -
 WARE 13114M001     1        M      -     -     -
 DELF 13502M004     1        M      -     -     -
 WROC               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         :     9
 TOTAL NUMBER OF STATIONS:    54
 -------------------------------------------------------------------------------

 FILE  GRP    #SITES   COV.COMP. COMPONENT      RMS
 ---------------------------------------------------
                                     N          0.6
    1  ASI         7     0.2000      E          1.5
                                     U          5.1
 ---------------------------------------------------
                                     N          1.0
    2  BEK        14     1.0000      E          0.8
                                     U          5.0
 ---------------------------------------------------
                                     N          0.6
    3  COE        35     1.0000      E          1.2
                                     U          3.6
 ---------------------------------------------------
                                     N          1.1
    4  IFG        13     1.0000      E          1.1
                                     U          3.1
 ---------------------------------------------------
                                     N          0.2
    5  LPT         6     1.0000      E          0.3
                                     U          4.0
 ---------------------------------------------------
                                     N          1.5
    6  NKG        25     1.0000      E          1.9
                                     U          3.1
 ---------------------------------------------------
                                     N          0.5
    7  OLG        14     0.1600      E          0.5
                                     U          1.2
 ---------------------------------------------------
                                     N          0.4
    8  ROB        11     0.6600      E          0.4
                                     U          1.3
 ---------------------------------------------------
                                     N          0.5
    9  WUT        14     0.1600      E          0.9
                                     U          3.4
 ---------------------------------------------------
                                     N          0.9
       MEAN       54                 E          1.2
                                     U          3.3

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