[IGSREPORT-14589] Wk 1404 IGS SINEX Combination
Martin Bourassa
mbourass at nrcan.gc.ca
Fri Dec 22 08:32:53 PST 2006
******************************************************************************
IGS Electronic Report 22 Dec 08:32:56 PST 2006 Message Number 14589
******************************************************************************
Author: R. Ferland , M. Bourassa
===================================================================
Combined AC solution for GPS week 1404 - 06/12/03 to 06/12/09
===================================================================
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:
CDDIS (cddis.gsfc.nasa.gov) and SOPAC (garner.ucsd.edu)
igs06P1404.snx Combined weekly solution.
igs06P1404.erp Daily Earth Rotation Parameters.
igs00p02.erp Daily Earth Rotation Parameters since GPS week 1013.
IGS06P49.snx Cumulative Combined solution.
igs06P1404.sum This file.
igs06P1404.itr Residuals between the AC and the IGS05 for the RF stations.
igs06P1404.res Residuals between the AC and the Combined Weekly solution.
IGS06P49.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
IGS05 stations at the current epoch.
ftp://igscb.jpl.nasa.gov/igscb/station/coord/IGS05.snx
3-4) The AC are compared to IGS05, 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 IGS05 of the current
epoch using a 7-parameters transformation. The singular cumulative
combined solution is aligned to the IGS05 of the reference epoch
using a 14-parameters transformation and the 132 ITRF station positions
and velocities. The IGS05 is a realization of ITRF2005.
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 = IGS05.snx
igs = igs06P1404.snx
IGS = IGS06P49.snx
MIT = mit14047.snx
mit = mit1404g.snx
BuA = IERS Bulletin A
jpl mit are used to quality control the weekly combination.
gfz ngs excluded from the geocenter estimation (Sec. 5-4).
Solutions with manual station deletion:
From the original solution:
cod SATA X Y Z
emr SATA X Y Z
gfz SATA X Y Z
sio SATA X Y Z
After unconstraining:
esa NNOR
jpl ASPA GOUG
sio OUS2
New stations in the cumulative solution IGS06P49.snx
CIC1 A 2
4-1) Starting with GPS week 1400, the solutions are aligned to the
IGS05.snx realization of ITRF2005.
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 | 167 | 101 | 25.530 | 0.999 | 25.516 |
emr | 45 | 39 | 4.882 | 1.000 | 4.880 |
esa | 75 | 65 | 15.105 | 1.000 | 15.098 |
gfz | 176 | 105 | 5.714 | 0.999 | 5.706 |
MIT | 155 | 93 | 2.886 | 0.999 | 2.882 |
ngs | 196 | 107 | 29.301 | 0.999 | 29.269 |
sio | 158 | 106 | 2.992 | 0.999 | 2.989 |
jpl | 117 | 65 | 6.028 | 1.000 | 6.026 |
mit | 300 | 117 | 1.277 | 1.000 | 1.276 |
igs | 263 | 118 | 1.294 | 0.992 | 1.284 |
---------------|-----|-----|---------------|---------------|---------------|
5-2) Solution Residuals weighted Average & STD :
=====================================================
5-2-1) With respect to the IGS05 stations:
=============================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 101 | -0.3 -0.0 0.2 | 2.7 2.9 8.8 |
emr 39 | 0.2 -0.0 0.1 | 3.2 2.6 9.4 |
esa 65 | -2.4 0.2 -0.4 | 3.7 2.6 11.8 |
gfz 105 | -0.7 -0.0 -0.3 | 2.5 2.0 8.4 |
MIT 93 | -0.2 0.1 -0.0 | 2.7 2.8 7.1 |
ngs 107 | -0.0 0.2 0.0 | 2.7 2.6 7.9 |
sio 106 | 1.4 0.2 0.1 | 2.7 3.9 8.4 |
jpl 65 | -1.1 -0.1 -0.0 | 3.1 2.8 12.2 |
mit 117 | -0.1 0.1 0.2 | 2.4 2.9 7.5 |
---------------|---------------------------|---------------------------|
5-2-2) With respect to the Weekly Combination:
=================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 161 | 0.1 -0.2 -0.6 | 1.3 1.5 4.1 |
emr 44 | 0.1 -0.3 -1.3 | 1.9 1.6 5.5 |
esa 72 | -1.9 0.1 -1.2 | 2.5 2.4 10.6 |
gfz 172 | -0.4 -0.0 -0.1 | 0.9 0.9 3.4 |
MIT 139 | 0.0 0.3 -0.4 | 1.5 1.6 3.4 |
ngs 184 | 0.1 -0.1 -0.0 | 1.9 2.3 4.4 |
sio 149 | 1.8 0.2 -0.5 | 1.3 2.6 3.7 |
jpl 108 | -0.5 -0.2 -1.1 | 2.7 2.8 11.5 |
mit 260 | 0.2 0.0 0.1 | 0.8 1.2 1.6 |
ITR 117 | 0.2 -0.1 -0.1 | 2.2 2.1 7.4 |
---------------|---------------------------|---------------------------|
5-2-3) With respect to the Cumulative Combination:
=====================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 150 | -0.2 0.1 -0.2 | 2.2 3.1 8.0 |
emr 43 | -0.4 -0.2 -0.4 | 2.9 2.6 7.2 |
esa 73 | -2.4 0.2 0.3 | 3.0 2.8 13.2 |
gfz 157 | -0.9 0.1 -0.0 | 2.0 1.8 7.6 |
MIT 136 | -0.3 0.3 -0.5 | 2.4 2.6 5.9 |
ngs 156 | -0.2 0.2 -0.5 | 2.3 3.0 8.4 |
sio 140 | 1.5 0.0 -0.1 | 2.6 3.9 7.3 |
jpl 100 | -1.1 -0.4 0.2 | 2.9 2.4 12.4 |
mit 216 | 0.0 0.1 -0.0 | 2.5 3.2 6.9 |
igs 209 | -0.2 0.1 -0.1 | 1.8 2.0 6.2 |
ITR 129 | -0.1 0.1 -0.1 | 1.6 1.2 5.0 |
---------------|---------------------------|---------------------------|
5-3) 7-Parameters Transformation: AC ----> IGS05.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 | -0.001 -0.004 0.007 0.1 0.3 0.1 0.08 |
emr | -0.002 -0.008 0.013 -3.4 5.2 12.0 -0.02 |
esa | 0.001 -0.041 0.032 0.5 0.9 -0.8 -0.65 |
gfz | 0.010 -0.025 0.005 0.4 -0.2 1.1 -0.49 |
MIT | -0.009 0.009 -0.007 6.8 0.2 -1.1 0.30 |
ngs | 0.035 -0.168 0.025 7.6 1.3 -12.4 -0.86 |
sio | 0.055 -0.204 0.137 11.1 3.7 12.0 0.36 |
jpl | 0.211 -0.097 0.252 6.5 8.4 15.3 0.32 |
mit | -0.012 0.019 -0.008 -0.3 0.3 0.1 -0.23 |
igs | 0.000 0.000 0.000 0.0 0.0 0.0 -0.17 |
---------------|---------------------------------------------------------------|
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 | 0.039 0.042 0.043 1.1 1.0 1.0 0.16 |
emr | 0.061 0.064 0.072 1.6 1.6 1.6 0.25 |
esa | 0.047 0.051 0.054 1.3 1.3 1.3 0.20 |
gfz | 0.039 0.040 0.043 1.0 1.0 1.0 0.16 |
MIT | 0.041 0.042 0.045 1.1 1.1 1.1 0.17 |
ngs | 0.039 0.041 0.043 1.0 1.0 1.0 0.16 |
sio | 0.038 0.041 0.043 1.0 1.0 1.0 0.16 |
jpl | 0.048 0.050 0.054 1.3 1.3 1.3 0.20 |
mit | 0.037 0.038 0.041 1.0 1.0 1.0 0.15 |
igs | 0.000 0.000 0.000 0.0 0.0 0.0 0.48 |
---------------|---------------------------------------------------------------|
5-4) Geocenter:
====================
| X Y Z | s X s Y s Z |
| (mm) (mm) (mm) | (mm) (mm) (mm) |
---------------|---------------------------|---------------------------|
igs | 6.2 5.0 8.6 | 2.9 3.0 4.6 |
---------------|---------------------------|---------------------------|
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 | --- --- 0.7 --- -4.2 --- |
emr | --- 11.5 0.2 -5.2 -2.3 -1.1 |
esa | --- 12.7 0.3 --- -6.1 --- |
gfz | --- -0.4 4.1 -3.2 0.1 15.1 |
MIT | --- -8.6 0.3 1.0 -3.5 0.7 |
ngs | --- -1.5 -9.4 34.5 7.7 -25.9 |
sio | --- 7.2 -6.7 0.7 -4.1 -1.7 |
jpl | --- 4.8 4.3 -8.7 -4.2 25.9 |
mit | --- -23.8 -1.5 1.0 -0.8 0.8 |
ITR | --- --- --- --- --- --- |
BuA | --- 6.1 -3.9 -0.6 33.3 0.3 |
---------------|------------------------------------------------------------|
5-5-2) STD :
===============
Solution | UT LOD XPO XPOR YPO YPOR |
| us us .01mas .01ma/d .01mas .01ma/d |
---------------|------------------------------------------------------------|
cod | --- --- 1.3 --- 1.6 --- |
emr | --- 6.7 4.8 8.3 0.9 6.3 |
esa | --- 22.4 4.3 --- 3.7 --- |
gfz | --- 7.2 2.1 10.1 2.1 8.2 |
MIT | --- 6.7 2.8 8.3 1.1 2.8 |
ngs | --- 15.5 4.6 13.9 3.1 25.3 |
sio | --- 4.0 3.3 6.4 1.5 6.3 |
jpl | --- 15.1 3.5 19.3 2.6 5.9 |
mit | --- 7.5 2.7 4.4 0.7 5.6 |
ITR | --- --- --- --- --- --- |
BuA | --- 11.5 5.4 9.4 4.3 12.6 |
---------------|------------------------------------------------------------|
5-6) Satellite Antenna Offset Residuals weighted Average & STD :
=====================================================================
No Satellite phase center ...
5-7) Outliers:
===================
Thresholds set at 5 sigmas and 50 mm.
Solution Solution | Station | N E U |
Minus |code id soln| (mm) (mm) (mm)|
-----------------------------------------|------------|-----------------------|
| | |
ITRF_IGS05.snx cod14047.snx |SCH2 A 1| -3.3 14.1 -11.6|
ITRF_IGS05.snx cod14047.snx |YSSK A 2| 2.7 -18.2 0.9|
| | |
ITRF_IGS05.snx esa14047.snx |ARTU A 3| 11.2 -34.2 28.3|
| | |
ITRF_IGS05.snx gfz14047.snx |ALRT A 1| 2.0 8.9 -20.3|
ITRF_IGS05.snx gfz14047.snx |SCH2 A 1| -1.7 13.9 -14.2|
ITRF_IGS05.snx gfz14047.snx |YSSK A 2| -0.7 -11.7 14.4|
| | |
ITRF_IGS05.snx MIT14047.snx |ALGO A 7| 1.7 2.8 14.9|
ITRF_IGS05.snx MIT14047.snx |SCH2 A 1| -1.4 12.3 -17.0|
| | |
ITRF_IGS05.snx ngs14047.snx |YSSK A 2| -1.2 -14.9 -0.4|
| | |
ITRF_IGS05.snx jpl14047.snx |SCH2 A 1| -0.8 12.1 -10.4|
| | |
ITRF_IGS05.snx mit1404g.snx |GUAO A 1| 1.1 1.1 68.4|
| | |
IGS06P48.snx cod14047.snx |YAKT A 1| 17.0 -30.9 -21.0|
| | |
IGS06P48.snx esa14047.snx |YAKT A 1| 23.5 -26.0 12.5|
| | |
IGS06P48.snx gfz14047.snx |YAKT A 1| 15.2 -22.1 -14.2|
| | |
IGS06P48.snx gfz14047.snx |KIRU A 1| -1.6 0.8 -42.9|
| | |
IGS06P48.snx MIT14047.snx |YAKT A 1| 24.2 -24.7 -15.0|
| | |
IGS06P48.snx ngs14047.snx |YAKT A 1| 15.6 -25.3 -24.5|
| | |
IGS06P48.snx ngs14047.snx |GUAT A 1| 2.4 11.7 6.8|
| | |
IGS06P48.snx sio14047.snx |CAGS A 1| 4.8 9.0 -58.0|
| | |
IGS06P48.snx jpl14047.snx |AUCK A 2| -3.7 0.2 -43.8|
IGS06P48.snx jpl14047.snx |YAKT A 1| 13.9 -16.8 -20.7|
| | |
IGS06P48.snx mit1404g.snx |CAGS A 1| 2.8 7.8 -56.7|
| | |
IGS06P48.snx igs06P1404.snx |ALRT A 1| 4.7 8.0 -23.5|
IGS06P48.snx igs06P1404.snx |BAKO A 7| -6.6 -2.6 -6.3|
IGS06P48.snx igs06P1404.snx |MEDI A 2| 3.3 8.1 -7.4|
IGS06P48.snx igs06P1404.snx |MKEA A 1| -3.4 8.2 0.0|
IGS06P48.snx igs06P1404.snx |URUM A 1| 1.7 -2.6 24.0|
IGS06P48.snx igs06P1404.snx |YSSK A 2| -2.2 -13.7 7.9|
-----------------------------------------|------------|-----------------------|
5-8) Conflicts:
====================
IERS DOMES NO MIT cod emr esa gfz jpl ngs sio IGS igs
============= ====== ====== ====== ====== ====== ====== ====== ====== ====== ======
43001M002 THU2 A THU3 A THU3 A THU3 A THU3 A THU3 A THU2 A THU3 A THU3 A
THU3 A
42202M005 AREQ A AREQ A AREQ A AREQ A AREQ A AREQ A AREQ B AREQ A AREQ A AREQ A
40451M123 GODE A GODZ A GODE A GODE A GODE A GODE A GODE A GODE A
40405S031 GOL2 A GOLD A GOLD A GOLD A GOLD A GOL2 A GOLD A GOLD A
50103M108 TIDB A TIDB A TIDB A TIDB A TID2 A TIDB A TIDB A
TID1 A TIDB A
TID2 A
22003M001 PIMO A PIMO A PIMO B PIMO A PIMO A PIMO A PIMO A PIMO A PIMO A
50107M004 YAR2 A YAR2 A YAR2 A YAR2 A YAR1 A YAR1 A
22306M002 IISC A IISC A IISC A IISC B IISC A IISC A IISC B IISC A IISC A IISC A
20703S001 RAMO A RAMO A ELRO A RAMO A RAMO A RAMO A ELRO A RAMO A
RAMO A
43401M001 BDOS A BDOS A BDOS A BDOS A BDOS A
BDOS A BDOS A
43005M002 KELY B KELY B KELY B KELY B KELY A KELY A KELY A
10422M001 KIR0 A KIR0 A KIR0 A KR0G A KR0G A
12351M001 ZECK A ZECK A ZECK A ZECK A ZECK A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
HLFX A PALM A PUR3 A MIA3 A CCV3 A KYW1 A MCD1 A ELEN A ADKS A AZCN A
SPMX A UPO1 A MTJO A CNCL A QUAR A KARA A SAMP A ELAT A MAR6 A
MISSING IERS DOMES NOS AT gfz:
-----------------------------
PALM A
MISSING IERS DOMES NOS AT ngs:
-----------------------------
AZCO A DWH1 A LEBA A MCN1 A MLF1 A NISU A SUTB A HAMM A
MISSING IERS DOMES NOS AT sio:
-----------------------------
KULU A SG21 A CNCL A KARA A
MISSING IERS DOMES NOS AT igs:
-----------------------------
SPMX A
IERS DOMES NO mit IGS igs
============= ====== ====== ======
13407S012 MAD2 A MAD2 A MADR A
MADR A MADR A
43401M001 BDOS A BDOS A BDOS A
BDOS A BDOS A
43001M002 THU2 A THU3 A THU3 A
40451M123 GODZ A GODE A GODE A
GODE A
50107M004 YAR2 A YAR1 A YAR1 A
12309M005 MDVJ A MDVJ A MDVJ A
MISSING IERS DOMES NOS AT mit:
-----------------------------
KULU A HLFX A PALM A PUR3 A MIA3 A CCV3 A KYW1 A MCD1 A MCN1 A LEBA A
MLF1 A ELEN A HAMM A ADKS A SG21 A AZCN A SPMX A SUTB A AIS1 A KOD1 A
UPO1 A MTJO A CNCL A QUAR A KARA A SAMP A ELAT A MAR6 A
MISSING IERS DOMES NOS AT igs:
-----------------------------
SPMX A
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