[IGSREPORT-10155] Wk 1211 IGS SINEX Combination
David Hutchison
hutch at geod.nrcan.gc.ca
Thu Apr 10 14:14:24 PDT 2003
******************************************************************************
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: ferland at geod.nrcan.gc.ca
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: hutch at geod.emr.ca
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