Subject: [IGSREPORT-10155] Wk 1211 IGS SINEX Combination
From: David Hutchison <[email-masked]>
To: [email-masked]
Date: Thu, 10 Apr 2003 17:14:24 -0400 (EDT)

******************************************************************************
IGS Electronic Report   10 Apr 14:14:28 PDT 2003      Message Number 10155
******************************************************************************

Author:  R. Ferland , D. Hutchison
===================================================================
 Combined AC  solution for GPS week 1211 -  03/03/23 to 03/03/29
===================================================================
1) Contacts:
============
e-mail: [email-masked]
Tel:    (613)995-4002 (Remi Ferland)
Fax:    (613)995-3215
2) Products:
============
All products are available at cddisa.gsfc.nasa.gov
igs03P1211.snx  Combined weekly solution. 
igs03P1211.erp  Daily Earth Rotation Parameters.
igs00p02.erp    Daily Earth Rotation Parameters since GPS week 1013.
IGS03P13.snx    Cumulative Combined solution. 
igs03P1211.sum  This file.
igs03P1211.itr  Residuals between the AC and the IGS00 for the RF stations. 
igs03P1211.res  Residuals between the AC and the Combined Weekly solution.
IGS03P13.res    Residuals between the AC and the Cumulative Combined solution.
 
Where IGSyyPww & igsyyPwwww represent:
      yy      Last 2 digits of the year
      ww      week in year yy
      wwww    GPS week
      P       GPS technique used
NOTE: At the time of inception of processing, mit's GNAAC submission
----  was not yet present at CDDIS.
 
3) Combination Strategy:
========================
       The AC solutions are processed using the following procedure:
3-1) The AC solutions are checked/corrected for possible format problems,
     station names inconsistencies, etc...
3-2) The AC solutions are unconstrained according to the information provided
     in the SOLUTION/APRIORI Block.
3-3) The AC solutions are aligned (using a 7-parameters) and compared to the
     IGS00 stations at the current epoch.
     ftp://igscb.jpl.nasa.gov/igscb/station/coord/IGS01P37_RS54.SNX.Z
3-4) The AC are compared to IGS00, to each other, to the previous week
     solution and to the cumulative solution in order to identify and remove
     outliers.
3-5) The weekly AC solutions are combined and added to the cumulative
     combined solution. The cumulative combination is done to ensures 14
     parameters singularity.
     The weekly combined solution is aligned to the IGS00 of the current
     epoch using a 7-parameters transformation. The singular cumulative
     combined solution is aligned to the IGS00 of the reference epoch
     using a 14-parameters transformation and the 54 ITRF station positions
     and velocities. The IGS00 is a realization of ITRF2000.
     For more details, see:
     Blewitt, G., C. Boucher and J. Kouba, 1997, Procedure for ITRF continuous
       realization, the report of the IGS GB, presented to the IGS Governing 
       Board Meeting held in San Francisco, Dec. 11.
     Kouba, J., J. Ray and M.M. Watkins, IGS Reference Frame Realization, 1998
       IGS Analysis Center Workshop Proceedings, European Space Operations
       Centre, Darmstadt, Germany.
The combination software was developed at NRCan.
4) Remarks:
===========
     ITR = IGS01P37_RS54.SNX
     igs = igs03P1211.snx  ( Weekly Combination )
     IGS = IGS03P13.snx   ( Cumulative Solution )
     BuA = IERS Bulletin A
     ncl are used to quality control the weekly combination.
     gfz excluded from the geocenter estimation (Sec. 5-4).
     Solutions with manual station deletion:
         After unconstraining:
             esa  PIMO
             jpl  IISC  KELY  SANT  TID1  TIDB
             ngs  KOKB
             ncl  QAQ1
     4-1) Starting with GPS week 1143, the solutions are aligned to the
     IGS01P37_RS54.SNX realization of ITRF2000.
     4-2) Starting with GPS week 1078, UT1-UTC from IERS Bulletin A
     is included in the erp files.
5) Results:
===========
5-1)      AC (Variance Factor)^0.5 estimates:
==================================================
           The residuals used in the estimation of the Variance Factor
           are the differences between the cumulative combined solution
           and each AC weekly solution.
           SF = (Variance Factor)^0.5 = (Chi^2/dof)^0.5
           Final(SF) = Apriori(SF) * Aposteriori(SF)
Solution       |# sta| #RF |    Apriori(SF)|Aposteriori(SF)|      Final(SF)|
---------------|-----|-----|---------------|---------------|---------------|
cod            | 150 |  43 |        22.362 |         0.998 |        22.320 |
emr            |  39 |  19 |         4.720 |         0.998 |         4.712 |
esa            |  58 |  38 |        11.312 |         1.000 |        11.312 |
gfz            | 176 |  44 |         9.232 |         0.998 |         9.216 |
jpl            |  82 |  28 |         4.989 |         0.998 |         4.978 |
ngs            |  73 |  45 |        23.496 |         1.000 |        23.491 |
sio            | 143 |  46 |         1.911 |         0.999 |         1.909 |
ncl            | 135 |  45 |         1.286 |         0.999 |         1.284 |
igs            | 198 |  47 |         1.320 |         1.010 |         1.334 |
---------------|-----|-----|---------------|---------------|---------------|
5-2)      Solution Residuals weighted Average & STD :
=====================================================
5-2-1)    With respect to the IGS00 stations:
=============================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod         42 |     0.4      0.3     -0.4 |     3.2      4.0     11.0 |
emr         18 |    -1.4      0.4      0.9 |     4.7      2.7     10.1 |
esa         37 |    -3.0      0.9      1.1 |     6.5      6.8     14.6 |
gfz         43 |     0.5      0.5      0.3 |     3.0      4.1      8.8 |
jpl         27 |     1.2     -0.3      0.5 |     2.7      3.5     12.6 |
ngs         44 |    -2.0     -0.3      0.7 |     8.2      9.2     14.8 |
sio         45 |    -0.2      0.7      0.2 |     3.7      5.1      8.5 |
ncl         44 |    -0.1      0.4      0.2 |     3.1      3.3      5.3 |
---------------|---------------------------|---------------------------|
5-2-2)    With respect to the Weekly Combination:
=================================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod        145 |     0.0      0.2      1.0 |     1.4      1.4      5.4 |
emr         39 |    -1.9      0.4     -0.4 |     2.4      2.3      8.4 |
esa         57 |    -3.5      0.1      0.4 |     4.2      5.5     10.9 |
gfz        170 |    -0.1     -0.1     -0.1 |     1.4      1.8      5.5 |
jpl         80 |     0.7     -0.4     -1.8 |     1.4      2.1      8.5 |
ngs         71 |    -1.7     -1.6      0.5 |     7.3      8.4     12.7 |
sio        134 |    -0.5     -0.2      1.2 |     2.2      2.5      4.8 |
ncl        132 |    -0.5     -0.1      0.9 |     0.9      0.7      2.6 |
ITR         46 |    -0.3     -0.7     -0.1 |     3.3      3.5      9.6 |
---------------|---------------------------|---------------------------|
5-2-3)    With respect to the Cumulative Combination:
=====================================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod        134 |     0.0      0.2      0.5 |     2.5      2.5      8.1 |
emr         36 |    -2.1      0.3     -0.9 |     2.9      2.7      9.5 |
esa         57 |    -3.7      0.2      0.4 |     5.3      5.8     13.2 |
gfz        140 |    -0.2     -0.2      0.1 |     2.5      3.1      8.3 |
jpl         69 |     0.8     -0.8     -2.7 |     2.0      2.6     10.8 |
ngs         72 |    -1.6     -1.6      0.2 |     7.9      9.0     14.5 |
sio        122 |    -0.6      0.1      1.0 |     3.1      3.7      7.0 |
ncl        125 |    -0.5     -0.1      0.6 |     2.2      2.0      5.2 |
igs        156 |    -0.2     -0.1     -0.3 |     2.0      2.0      6.3 |
ITR         54 |    -0.3     -0.6      0.1 |     1.7      1.9      3.7 |
---------------|---------------------------|---------------------------|
5-3)      7-Parameters Transformation: AC ----> IGS01P37_RS54.snx
=================================================================
5-3-1)    Estimates : 
=====================
Solution       |    R X      R Y      R Z      T X      T Y      T Z      SCL  |
               |   (mas)    (mas)    (mas)     (mm)     (mm)     (mm)    (ppb) |
---------------|---------------------------------------------------------------|
cod            |   0.003   -0.002   -0.013      7.9      4.3     -1.1     1.30 |
emr            |  -0.025   -0.041   -0.031    -12.5     -7.1     11.1     0.95 |
esa            |   0.093   -0.052    0.037    -17.5     17.7     -4.1     1.13 |
gfz            |   0.018   -0.014    0.058     -1.7      0.8     -1.2     0.99 |
jpl            |   0.011    0.023   -0.025    -14.7      5.2      9.0     1.11 |
ngs            |  -0.035   -0.281   -0.016     -2.0     -2.1    -44.6     1.00 |
sio            |  -0.088   -0.065   -0.005      8.9     -6.7     33.9     1.21 |
ncl            |  -0.022   -0.043   -0.039      0.4     -0.3     -2.7     1.03 |
---------------|---------------------------------------------------------------|
5-3-2)    STD : 
===============
Solution       |    R X      R Y      R Z      T X      T Y      T Z      SCL  |
               |   (mas)    (mas)    (mas)     (mm)     (mm)     (mm)    (ppb) |
---------------|---------------------------------------------------------------|
cod            |   0.060    0.062    0.068      1.6      1.6      1.6     0.25 |
emr            |   0.093    0.089    0.112      2.4      2.4      2.4     0.38 |
esa            |   0.066    0.070    0.072      1.8      1.8      1.7     0.27 |
gfz            |   0.060    0.062    0.068      1.6      1.6      1.6     0.24 |
jpl            |   0.079    0.075    0.089      2.0      2.0      2.0     0.31 |
ngs            |   0.059    0.061    0.067      1.6      1.6      1.6     0.24 |
sio            |   0.058    0.060    0.066      1.5      1.5      1.5     0.24 |
ncl            |   0.059    0.061    0.067      1.6      1.6      1.6     0.24 |
---------------|---------------------------------------------------------------|
5-4)      Geocenter:
====================
               |      X        Y        Z  |    s X      s Y      s Z  |
               |    (mm)     (mm)     (mm) |    (mm)     (mm)     (mm) |
---------------|---------------------------|---------------------------|
igs            |     8.5     -1.4     -1.0 |     2.2      1.5      4.0 |
---------------|---------------------------|---------------------------|
5-5)      ERP Residuals Weighted Average & STD :
================================================
5-5-1)    Weighted Average :
============================
Solution       |      UT       LOD       XPO      XPOR       YPO      YPOR  |
               |      us        us    .01mas    .01ma/d   .01mas    .01ma/d |
---------------|------------------------------------------------------------|
cod            |     ---      -16.1      -2.4       ---       -.9       --- |
emr            |     ---       -3.9       2.4        .5       1.8       7.5 |
esa            |     ---       -4.6      -7.2       ---       2.0       --- |
gfz            |     ---       23.8      -2.3      -2.1      10.5      -2.1 |
jpl            |     ---       29.4      -1.7      -5.2      -5.3       2.6 |
ngs            |     ---       -8.1      11.8     -18.3      17.9     -33.5 |
sio            |     ---      -21.0      -2.1       7.4      -7.2      -1.0 |
ncl            |     ---        7.4      -4.4       ---       1.4       --- |
ITR            |     ---        ---       ---       ---       ---       --- |
BuA            |     ---      -11.2     -11.5       7.0      26.3        .7 |
---------------|------------------------------------------------------------|
5-5-2)    STD :
===============
Solution       |      UT       LOD       XPO      XPOR       YPO      YPOR  |
               |      us        us    .01mas    .01ma/d   .01mas    .01ma/d |
---------------|------------------------------------------------------------|
cod            |     ---        8.2       1.2       ---       1.1       --- |
emr            |     ---        6.2       3.9      13.1       3.5      14.2 |
esa            |     ---       11.5       2.5       ---       3.1       --- |
gfz            |     ---       12.3       2.6       9.8       2.1       7.8 |
jpl            |     ---       16.5       1.8      23.7       1.9       5.7 |
ngs            |     ---       36.1       3.4      44.3       8.0      25.2 |
sio            |     ---       10.1       2.9       4.8       2.6       5.1 |
ncl            |     ---        1.4       1.5       ---        .6       --- |
ITR            |     ---        ---       ---       ---       ---       --- |
BuA            |     ---       14.3       4.7       6.6       5.3       9.4 |
---------------|------------------------------------------------------------|
5-6)      Outliers:
===================
Thresholds set at 5 sigmas and 50 mm.
 Solution             Solution           |  Station   |    N       E       U  |
              Minus                      |code id soln|   (mm)    (mm)    (mm)|
-----------------------------------------|------------|-----------------------|
                                         |            |                       |
emr12117.snx         esa12117.snx        |EISL  A ----|    8.3    -5.4    52.5|
                                         |            |                       |
emr12117.snx         ngs12117.snx        |COCO  A    2|   -4.8   -19.1   -50.8|
                                         |            |                       |
esa12117.snx         jpl12117.snx        |EISL  A ----|   -2.0    10.4   -54.6|
                                         |            |                       |
jpl12117.snx         ngs12117.snx        |STJO  A ----|    2.3    -2.1   -51.2|
jpl12117.snx         ngs12117.snx        |WUHN  A    2|    0.7    -6.0    51.1|
                                         |            |                       |
jpl12117.snx         sio12117.snx        |STJO  A ----|   -1.9    -1.6   -38.8|
jpl12117.snx         sio12117.snx        |WUHN  A    2|    2.5    -3.5    54.9|
                                         |            |                       |
IGS03P12.snx         cod12117.snx        |RESO  A ----|    1.7   -13.6     1.8|
                                         |            |                       |
IGS03P12.snx         gfz12117.snx        |PRDS  A ----|   20.8     0.9    -6.3|
IGS03P12.snx         gfz12117.snx        |RESO  A ----|    4.1   -11.3    -2.1|
                                         |            |                       |
IGS03P12.snx         sio12117.snx        |PRDS  A ----|   18.3    -0.9   -13.6|
                                         |            |                       |
IGS03P12.snx         ncl1211g.snx        |KELY  A ----|   -0.9     3.0    46.3|
                                         |            |                       |
IGS03P12.snx         igs03P1211.snx      |HERS  A ----|    0.6     9.2     4.3|
IGS03P12.snx         igs03P1211.snx      |KODK  A ----|    3.7    -8.3     6.1|
IGS03P12.snx         igs03P1211.snx      |KOSG  A ----|    8.8     2.7     2.3|
-----------------------------------------|------------|-----------------------|
5-7)              Conflicts:
=========================== 
5-7-1) Station Name Conflicts:
============================= 
IERS DOMES NO    cod    emr    esa    gfz    jpl    ngs    sio    IGS    igs
============= ====== ====== ====== ====== ====== ====== ====== ====== ======
    42202M005 AREQ A AREQ A        AREQ A AREQ A AREQ B        AREQ A AREQ A
    40405S031 GOLD A        GOLD A GOLD A        GOL2 A GOL2 A GOLD A GOLD A
    22306M002 IISC A IISC A IISC B IISC A IISC A IISC B IISC A IISC A IISC A
    13407S012 MADR A               MADR A MAD2 A MADR A MAD2 A MADR A MADR A
    22003M001 PIMO A PIMO A PIMO B PIMO A PIMO A        PIMO A PIMO A PIMO A
    30314M002 SUTH A        SUTH B SUTH A        SUTH A SUTH A SUTH A SUTH A
    43001M002 THU3 A               THU3 A THU3 A        THU3 A        THU2 A
                                                        THU2 A        THU3 A
    50103M108 TIDB A        TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TIDB A
                                   TID1 A               TIDB A              
                                   TID2 A                                   
    50107M004 YAR2 A                                    YAR2 A YAR1 A YAR1 A
    23604S001                             TNML A        TNML A        TNML A
 
MISSING IERS DOMES NOS AT gfz:
-----------------------------
  BISH A  PMON A  PALM A
 
MISSING IERS DOMES NOS AT sio:
-----------------------------
  CAVA A  SFEL A  VOLT A  BRAS A
IERS DOMES NO    ncl    IGS    igs
============= ====== ====== ======
    43001M002 THU3 A        THU2 A
                            THU3 A
    50103M108 TID2 A TIDB A TIDB A
              TIDB A              
5-7-2) Station Antenna Conflicts:
================================ 
 _______________________ 
|Enforcing these aliases|
|_______________________|
   IISC A: IISC B  
   SUTH A: SUTH B  
   PIMO A: PIMO B  
   TIDB A: TID1 A  TID2 A  
   MADR A: MAD2 A  
   AREQ A: AREQ B  
   GOLD A: GOL2 A  
ABBREVIATIONS:
-------------
    L1: L1 Offset
    L2: L2 Offset
   ECC: Eccentricity
    -N: NORTH (Latitude) 
    -E: EAST  (Longitude)
    -U: UP    (Vertical) 
Compare to file IGS.SNX (IGS).                
Antenna Conflicts in file cod12117.snx (cod).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
cod OHI2  A  .1100  .0000  .0000  .1280  .0000  .0000  .0008  .0000  .0000
IGS OHI2  A  .1100  .0000  .0000  .1280  .0000  .0000 -.0080  .0000  .0000
cod WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3200  .0000  .0000
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610 -.0094 -.0022
Antenna Conflicts in file esa12117.snx (esa).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
esa KIRU  A  .1081  .0003 -.0002  .1256  .0009  .0005  .0620  .0000  .0000
IGS KIRU  A  .1100  .0000  .0000  .1280  .0000  .0000  .0620  .0000  .0000
esa NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
Antenna Conflicts in file gfz12117.snx (gfz).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
gfz NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
Antenna Conflicts in file jpl12117.snx (jpl).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
jpl NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
jpl WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610  .0000  .0000
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610 -.0094 -.0022
Antenna Conflicts in file ncl1211g.snx (ncl).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
ncl NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
ncl WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610  .0000  .0000
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610 -.0094 -.0022
Antenna Conflicts in file ngs12117.snx (ngs).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
ngs BAKO  A  .0757  .0000  .0000  .0745  .0000  .0000 1.6160  .0000  .0000
IGS BAKO  A  .0780  .0000 -.0030  .0744 -.0031 -.0013 1.6160  .0000  .0000
ngs NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
ngs WUHN  A  .1081  .0000  .0000  .1256  .0000  .0000 2.3610 -.0094 -.0022
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610 -.0094 -.0022
Antenna Conflicts in file sio12117.snx (sio).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
sio NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
sio QAQ1  A  .1080 -.0002  .0001  .1267 -.0003  .0002  .0000  .0000  .0000
IGS QAQ1  A  .1080 -.0002  .0001  .1267 -.0003  .0002  .1206  .0000  .0000
sio WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610  .0000  .0000
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3610 -.0094 -.0022
The following file has no antenna conflicts: emr12117.snx (emr).           
-- 
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: [email-masked]