[IGSREPORT-12309] Wk 1310 IGS SINEX Combination
Martin Bourassa
bourassa at geod.nrcan.gc.ca
Thu Mar 3 17:09:21 PST 2005
******************************************************************************
IGS Electronic Report 03 Mar 17:09:27 PST 2005 Message Number 12309
******************************************************************************
Author: R. Ferland , D. Hutchison
===================================================================
Combined AC solution for GPS week 1310 - 05/02/13 to 05/02/19
===================================================================
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 and at garner.ucsd.edu
igs05P1310.snx Combined weekly solution.
igs05P1310.erp Daily Earth Rotation Parameters.
igs00p02.erp Daily Earth Rotation Parameters since GPS week 1013.
IGS05P07.snx Cumulative Combined solution.
igs05P1310.sum This file.
igs05P1310.itr Residuals between the AC and the IGb00 for the RF stations.
igs05P1310.res Residuals between the AC and the Combined Weekly solution.
IGS05P07.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
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
IGb00 stations at the current epoch.
ftp://igscb.jpl.nasa.gov/igscb/station/coord/IGS03P33_RS99.SNX.Z
3-4) The AC are compared to IGb00, 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 IGb00 of the current
epoch using a 7-parameters transformation. The singular cumulative
combined solution is aligned to the IGb00 of the reference epoch
using a 14-parameters transformation and the 99 ITRF station positions
and velocities. The IGb00 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 = IGS03P33_RS99.SNX
igs = igs05P1310.snx
IGS = IGS05P07.snx
MIT = mit13107.snx
mit = mit1310g.snx
BuA = IERS Bulletin A
mit ncl are used to quality control the weekly combination.
gfz ngs excluded from the geocenter estimation (Sec. 5-4).
New stations in the cumulative solution IGS05P07.snx
CRAO A ---- PICL A ---- SASK A ----
4-1) Starting with GPS week 1143, the solutions are aligned to the
IGS03P33_RS99.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 | 157 | 69 | 30.583 | 1.001 | 30.602 |
emr | 45 | 36 | 5.058 | 1.001 | 5.063 |
esa | 71 | 56 | 8.144 | 1.001 | 8.150 |
gfz | 181 | 75 | 11.730 | 1.001 | 11.740 |
jpl | 125 | 47 | 6.016 | 0.990 | 5.958 |
MIT | 143 | 63 | 3.089 | 1.067 | 3.297 |
ngs | 138 | 75 | 32.596 | 1.000 | 32.590 |
sio | 170 | 75 | 3.054 | 1.000 | 3.054 |
mit | 273 | 76 | 1.182 | 0.995 | 1.176 |
ncl | 164 | 78 | 3.333 | 1.001 | 3.338 |
igs | 244 | 79 | 1.431 | 1.027 | 1.469 |
---------------|-----|-----|---------------|---------------|---------------|
5-2) Solution Residuals weighted Average & STD :
=====================================================
5-2-1) With respect to the IGb00 stations:
=============================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 69 | 0.4 0.0 -0.1 | 3.6 3.4 11.3 |
emr 36 | -2.4 -0.0 1.4 | 3.6 2.8 12.4 |
esa 55 | -1.3 0.3 0.4 | 3.8 3.1 10.6 |
gfz 75 | -1.1 0.0 -0.4 | 3.5 3.2 10.8 |
jpl 47 | -1.7 0.1 -0.3 | 3.7 3.7 10.6 |
MIT 62 | -0.6 0.4 0.2 | 3.6 3.4 10.6 |
ngs 75 | -2.8 0.5 0.4 | 5.8 4.9 14.8 |
sio 75 | -0.9 0.4 0.0 | 3.8 3.9 10.6 |
mit 76 | -0.8 0.2 0.5 | 3.4 3.2 10.0 |
ncl 78 | -0.4 0.1 0.2 | 3.3 3.1 9.4 |
---------------|---------------------------|---------------------------|
5-2-2) With respect to the Weekly Combination:
=================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 154 | 1.0 0.1 -1.3 | 1.2 1.0 5.0 |
emr 45 | -2.8 0.3 0.8 | 2.5 2.1 5.8 |
esa 69 | -0.4 -0.0 -0.4 | 2.0 2.0 11.5 |
gfz 174 | -0.7 -0.3 -0.3 | 1.3 1.8 4.0 |
jpl 121 | -2.0 0.7 -2.7 | 1.6 2.1 7.1 |
MIT 125 | 0.2 0.1 -0.4 | 1.4 1.7 4.3 |
ngs 134 | -2.1 0.9 0.0 | 3.3 3.5 8.3 |
sio 153 | 0.3 0.3 -0.3 | 2.0 2.1 4.7 |
mit 237 | 0.0 0.1 -0.8 | 0.7 0.5 2.3 |
ncl 157 | 0.3 0.0 -0.0 | 0.8 0.6 2.4 |
ITR 78 | 0.6 -0.1 -1.2 | 3.4 3.0 9.7 |
---------------|---------------------------|---------------------------|
5-2-3) With respect to the Cumulative Combination:
=====================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 128 | 0.6 0.1 -0.6 | 2.9 2.9 9.1 |
emr 44 | -3.2 0.1 1.4 | 3.0 2.2 8.6 |
esa 69 | -0.9 -0.0 0.6 | 3.4 2.6 12.1 |
gfz 157 | -1.2 -0.2 0.3 | 2.9 2.7 8.7 |
jpl 100 | -2.4 0.2 -1.0 | 2.7 3.2 9.7 |
MIT 112 | -0.2 0.0 -0.4 | 2.8 3.1 9.7 |
ngs 127 | -2.7 0.6 0.7 | 4.7 4.4 12.3 |
sio 140 | -0.1 0.4 -0.2 | 3.2 3.4 8.8 |
mit 178 | -0.4 0.2 -0.4 | 2.6 2.5 7.5 |
ncl 145 | -0.2 -0.0 0.5 | 2.7 2.5 7.2 |
igs 179 | -0.7 0.0 0.0 | 2.3 2.1 7.2 |
ITR 85 | -0.3 0.0 -0.7 | 1.3 1.3 4.1 |
---------------|---------------------------|---------------------------|
5-3) 7-Parameters Transformation: AC ----> IGS03P33_RS99.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 | -0.004 0.024 -0.035 9.0 8.5 15.1 2.99 |
emr | -0.009 -0.017 -0.001 -2.6 13.9 -10.9 4.13 |
esa | -0.011 0.027 0.017 4.0 7.2 5.3 3.24 |
gfz | 0.042 -0.024 0.001 -0.4 1.6 -3.9 2.20 |
jpl | 0.135 -0.020 0.139 -5.4 9.0 6.3 1.96 |
MIT | 0.133 0.019 -0.178 0.7 4.3 -6.0 3.45 |
ngs | -0.054 0.098 -0.012 -3.1 -2.8 23.4 3.87 |
sio | -0.239 0.088 -0.008 10.9 -0.5 56.8 3.25 |
mit | -0.009 0.027 -0.007 -2.2 -0.7 -1.1 3.21 |
ncl | 0.002 -0.045 0.002 0.0 0.0 -2.4 2.75 |
---------------|---------------------------------------------------------------|
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 | 0.049 0.049 0.055 1.3 1.3 1.3 0.20 |
emr | 0.064 0.064 0.077 1.7 1.7 1.7 0.26 |
esa | 0.052 0.053 0.059 1.4 1.4 1.4 0.21 |
gfz | 0.046 0.046 0.053 1.2 1.2 1.2 0.19 |
jpl | 0.057 0.057 0.064 1.5 1.5 1.5 0.23 |
MIT | 0.050 0.050 0.056 1.3 1.3 1.3 0.20 |
ngs | 0.046 0.045 0.053 1.2 1.2 1.2 0.19 |
sio | 0.046 0.046 0.053 1.2 1.2 1.2 0.19 |
mit | 0.046 0.046 0.053 1.2 1.2 1.2 0.19 |
ncl | 0.045 0.045 0.052 1.2 1.2 1.2 0.18 |
---------------|---------------------------------------------------------------|
5-4) Geocenter:
====================
| X Y Z | s X s Y s Z |
| (mm) (mm) (mm) | (mm) (mm) (mm) |
---------------|---------------------------|---------------------------|
igs | 3.2 6.0 6.5 | 3.7 3.8 5.2 |
---------------|---------------------------|---------------------------|
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 | --- -11.9 0.2 --- -2.4 --- |
emr | --- -11.0 -0.2 -10.5 -7.0 -22.5 |
esa | --- 17.8 7.3 --- -3.3 --- |
gfz | --- 17.1 5.3 -5.3 7.4 -9.0 |
jpl | --- -16.0 1.5 -6.9 -3.2 2.0 |
MIT | --- 3.3 -1.8 -0.4 2.5 2.4 |
ngs | --- -6.3 -22.9 -49.2 14.9 -41.5 |
sio | --- -6.7 -10.2 -4.4 -1.2 -4.5 |
mit | --- 33.2 -3.9 -0.1 3.2 1.6 |
ncl | --- 13.9 2.2 --- 4.2 --- |
ITR | --- --- --- --- --- --- |
BuA | --- -19.0 -0.6 -0.2 30.3 -0.2 |
---------------|------------------------------------------------------------|
5-5-2) STD :
===============
Solution | UT LOD XPO XPOR YPO YPOR |
| us us .01mas .01ma/d .01mas .01ma/d |
---------------|------------------------------------------------------------|
cod | --- 9.8 1.5 --- 0.7 --- |
emr | --- 7.9 2.8 4.9 4.0 15.3 |
esa | --- 19.3 2.7 --- 6.5 --- |
gfz | --- 5.2 2.2 8.9 2.0 9.2 |
jpl | --- 17.1 1.2 8.9 1.8 7.6 |
MIT | --- 7.8 1.7 6.3 2.9 15.0 |
ngs | --- 19.4 5.9 28.1 6.7 31.4 |
sio | --- 6.9 3.4 4.7 2.4 10.0 |
mit | --- 6.3 1.5 4.1 3.1 3.6 |
ncl | --- 3.2 1.2 --- 1.0 --- |
ITR | --- --- --- --- --- --- |
BuA | --- 10.5 3.3 5.1 5.3 12.6 |
---------------|------------------------------------------------------------|
5-6) Outliers:
===================
Thresholds set at 5 sigmas and 50 mm.
Solution Solution | Station | N E U |
Minus |code id soln| (mm) (mm) (mm)|
-----------------------------------------|------------|-----------------------|
| | |
esa13107.snx MIT13107.snx |MCM4 A ----| 6.7 -1.9 53.1|
| | |
jpl13107.snx MIT13107.snx |ASPA A ----| 5.9 -1.3 53.7|
| | |
IGS05P06.snx esa13107.snx |KIRU A ----| 4.1 -3.1 -91.1|
| | |
IGS05P06.snx gfz13107.snx |SOLA A ----| 32.4 -14.2 -135.1|
| | |
IGS05P06.snx gfz13107.snx |KIRU A ----| 1.8 -3.6 -63.3|
| | |
IGS05P06.snx sio13107.snx |SOLA A ----| 36.8 -20.1 -126.8|
| | |
IGS05P06.snx sio13107.snx |KIRU A ----| -1.2 -1.3 -67.5|
| | |
IGS05P06.snx mit1310g.snx |SOLA A ----| 33.8 -16.0 -129.8|
| | |
IGS05P06.snx mit1310g.snx |KIRU A ----| 2.0 -2.2 -69.8|
| | |
IGS05P06.snx ncl1310g.snx |KIRU A ----| 2.1 -3.5 -69.0|
| | |
IGS05P06.snx igs05P1310.snx |BAN2 A ----| 0.2 -12.6 1.1|
IGS05P06.snx igs05P1310.snx |FAIR A 2| 0.2 9.7 17.9|
IGS05P06.snx igs05P1310.snx |KIRU A ----| 1.3 -2.9 -72.8|
IGS05P06.snx igs05P1310.snx |MANA A ----| 12.2 4.3 1.6|
IGS05P06.snx igs05P1310.snx |NAMA A ----| 18.6 -6.9 11.3|
IGS05P06.snx igs05P1310.snx |TVST A ----| -23.4 6.3 -50.7|
IGS05P06.snx igs05P1310.snx |URUM A ----| -0.2 -8.4 18.2|
IGS05P06.snx igs05P1310.snx |USUD A ----| 11.7 1.7 6.8|
-----------------------------------------|------------|-----------------------|
5-7) Conflicts:
====================
IERS DOMES NO MIT cod emr esa gfz jpl ngs sio IGS igs
============= ====== ====== ====== ====== ====== ====== ====== ====== ====== ======
13407S014 MAD2 A
13407S012 MADR A MAD2 A MADR A MAD2 A MADR A MADR A
MADR A
43001M002 THU2 A THU3 A THU3 A THU3 A THU3 A THU2 A THU3 A THU3 A
THU3 A
40451M123 GODE A GODZ A GODE A GODE A GODE A GODE A GODE A GODE A
50103M108 TIDB A TIDB A TIDB A TIDB A TID1 A TIDB A TID2 A TIDB A TIDB A
TID1 A TIDB A
TID2 A
50134M002 DARR A
50134M001 DARW A DARR A DARW A DARW A DARR A DARW A DARW A DARW A DARW A
DARW A
66010M001 DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A
DAVR A
22306M002 IISC A IISC A IISC A IISC B IISC A IISC A IISC B IISC A IISC A IISC A
10422M001 KIR0 A KIR0 A KR0G A
22003M001 PIMO A PIMO A PIMO B PIMO A PIMO A PIMO A PIMO A PIMO A PIMO A
12712M002 GENO A GENO A GENO A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
HLFX A PALM A PUR3 A MIA3 A CCV3 A KYW1 A MCD1 A UPO1 A OUSD A MTJO A
HORN A CNCL A QUAR A KARA A MAC1 B TVST A KAYT A MAR6 A IENG A
MISSING IERS DOMES NOS AT gfz:
-----------------------------
BISH A PALM A
MISSING IERS DOMES NOS AT ngs:
-----------------------------
CHUM A
MISSING IERS DOMES NOS AT sio:
-----------------------------
KULU A SG21 A DOAR A OUSD A CNCL A KARA A MERS A CAVA A SFEL A VOLT A
BRAS A
IERS DOMES NO mit ncl IGS igs
============= ====== ====== ====== ======
13407S014 MAD2 A
13407S012 MADR A MAD2 A MADR A MADR A
MADR A
43001M002 THU2 A THU3 A THU3 A THU3 A
40451M123 GODZ A GODE A GODE A GODE A
GODE A
50103M108 TIDB A TID1 A TIDB A TIDB A
TID2 A
TIDB A
50134M002 DARR A
50134M001 DARW A DARR A DARW A DARW A
DARW A
MISSING IERS DOMES NOS AT mit:
-----------------------------
MAC1 B BISH A
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