[IGSREPORT-9384] Wk 1170 IGS SINEX Combination
David Hutchison
hutch at geod.nrcan.gc.ca
Thu Jun 27 20:56:45 PDT 2002
******************************************************************************
IGS Electronic Report 27 Jun 20:56:48 PDT 2002 Message Number 9384
******************************************************************************
Author: R. Ferland , D. Hutchison
===================================================================
Combined AC solution for GPS week 1170 - 02/06/09 to 02/06/15
===================================================================
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
igs02P1170.snx Combined weekly solution.
igs02P1170.erp Daily Earth Rotation Parameters.
igs00p02.erp Daily Earth Rotation Parameters since GPS week 1013.
IGS02P24.snx Cumulative Combined solution.
igs02P1170.sum This file.
igs02P1170.itr Residuals between the AC and the IGS00 for the RF stations.
igs02P1170.res Residuals between the AC and the Combined Weekly solution.
IGS02P24.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
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 = igs02P1170.snx
IGS = IGS02P24.snx
BuA = IERS Bulletin A
mit 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:
jpl KELY
emr NRC1 NRC2
New stations in the cumulative solution IGS02P24.snx
QAQ1 A ----
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 | 128 | 45 | 25.922 | 1.000 | 25.929 |
emr | 38 | 27 | 3.838 | 0.999 | 3.835 |
esa | 56 | 37 | 13.120 | 1.001 | 13.129 |
gfz | 90 | 37 | 10.589 | 1.001 | 10.599 |
jpl | 95 | 32 | 4.288 | 0.996 | 4.271 |
ngs | 73 | 48 | 21.567 | 1.000 | 21.573 |
sio | 135 | 44 | 2.250 | 1.000 | 2.251 |
mit | 178 | 48 | 3.547 | 0.858 | 3.044 |
ncl | 109 | 46 | 2.449 | 0.989 | 2.421 |
igs | 170 | 50 | 1.262 | 1.014 | 1.280 |
---------------|-----|-----|---------------|---------------|---------------|
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 44 | 1.3 0.4 0.9 | 3.2 3.4 11.7 |
emr 26 | -0.2 -0.1 0.1 | 2.4 2.6 6.5 |
esa 36 | -0.2 -0.7 0.4 | 8.0 5.6 10.4 |
gfz 36 | -0.1 0.2 -1.1 | 2.7 3.6 8.4 |
jpl 31 | 0.1 0.2 1.5 | 2.4 2.9 9.9 |
ngs 47 | 0.3 -0.5 -0.9 | 5.3 7.7 10.2 |
sio 43 | -0.3 0.4 -1.3 | 3.6 3.5 11.9 |
mit 47 | 0.8 0.3 0.1 | 3.4 3.2 7.6 |
ncl 45 | 0.9 0.2 -0.1 | 2.1 2.6 5.6 |
---------------|---------------------------|---------------------------|
5-2-2) With respect to the Weekly Combination:
=================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 127 | 0.7 0.1 -0.3 | 1.3 1.2 8.4 |
emr 38 | -0.4 -0.6 -1.3 | 1.7 1.8 5.1 |
esa 54 | -0.5 -1.2 -0.2 | 7.3 5.9 9.4 |
gfz 89 | -0.2 -0.1 -0.3 | 2.1 2.1 5.4 |
jpl 95 | 0.2 0.5 2.0 | 2.3 2.0 7.3 |
ngs 71 | 0.5 -0.5 -0.1 | 5.2 7.3 9.2 |
sio 130 | -0.5 -0.1 0.2 | 2.3 3.2 11.9 |
mit 165 | 0.3 0.0 -0.9 | 1.0 0.8 4.6 |
ncl 107 | 0.6 -0.2 -0.1 | 1.0 0.6 3.1 |
ITR 49 | -0.7 -0.6 0.2 | 3.2 2.5 7.1 |
---------------|---------------------------|---------------------------|
5-2-3) With respect to the Cumulative Combination:
=====================================================
Solution | Weighted Average (mm) | STD (mm) |
| N E U | N E U |
---------------|---------------------------|---------------------------|
cod 121 | 0.7 0.5 -0.6 | 2.4 2.5 10.8 |
emr 38 | -0.4 -0.8 -1.3 | 2.1 2.6 7.6 |
esa 55 | 0.0 -1.1 -0.6 | 7.6 6.8 10.3 |
gfz 78 | -0.4 -0.1 -0.7 | 2.8 3.3 8.3 |
jpl 85 | 0.1 0.6 2.1 | 2.9 2.8 10.4 |
ngs 71 | 0.1 -0.2 -0.3 | 5.4 7.5 10.8 |
sio 126 | -0.4 0.4 0.5 | 2.9 4.1 12.4 |
mit 146 | 0.3 0.3 -0.8 | 2.5 2.7 8.8 |
ncl 105 | 0.5 -0.1 0.1 | 1.9 2.3 7.2 |
igs 149 | 0.0 0.4 0.0 | 2.0 2.3 5.9 |
ITR 54 | -0.2 -0.2 0.0 | 0.8 1.0 1.9 |
---------------|---------------------------|---------------------------|
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 | 0.006 0.015 -0.047 13.4 10.0 5.3 1.82 |
emr | 0.003 0.000 -0.025 4.7 8.1 -3.8 1.00 |
esa | 0.130 0.004 0.025 6.3 13.3 -2.1 0.66 |
gfz | -0.056 -0.218 0.056 1.7 0.5 -2.6 0.82 |
jpl | 0.008 -0.003 -0.033 2.0 2.3 -12.7 0.42 |
ngs | -0.021 -0.071 0.014 6.4 -7.7 -50.1 0.90 |
sio | -0.034 0.095 -0.058 3.7 3.3 30.2 0.49 |
mit | 0.008 0.015 -0.012 -0.4 -0.4 -0.6 1.19 |
ncl | -0.022 -0.030 -0.042 0.9 -0.7 -2.7 1.07 |
---------------|---------------------------------------------------------------|
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 | 0.059 0.060 0.067 1.5 1.5 1.5 0.24 |
emr | 0.078 0.076 0.087 2.0 2.0 2.0 0.31 |
esa | 0.068 0.069 0.076 1.8 1.8 1.8 0.28 |
gfz | 0.066 0.066 0.074 1.7 1.7 1.7 0.27 |
jpl | 0.070 0.069 0.078 1.8 1.8 1.8 0.28 |
ngs | 0.058 0.057 0.065 1.5 1.5 1.5 0.23 |
sio | 0.062 0.059 0.066 1.6 1.5 1.5 0.24 |
mit | 0.057 0.057 0.065 1.5 1.5 1.5 0.23 |
ncl | 0.059 0.058 0.066 1.5 1.5 1.5 0.24 |
---------------|---------------------------------------------------------------|
5-4) Geocenter:
====================
| X Y Z | s X s Y s Z |
| (mm) (mm) (mm) | (mm) (mm) (mm) |
---------------|---------------------------|---------------------------|
igs | 6.3 2.8 -3.1 | 1.5 1.6 4.7 |
---------------|---------------------------|---------------------------|
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 | --- 2.4 -1.1 --- -3.0 --- |
emr | --- -8.4 -.1 3.6 -.3 13.1 |
esa | --- -44.9 -5.7 --- -25.3 --- |
gfz | --- 16.3 4.7 3.9 14.0 -1.3 |
jpl | --- -8.3 1.8 -.2 -4.7 5.2 |
ngs | --- 64.2 19.5 2.5 27.4 -13.9 |
sio | --- 15.4 -2.2 -1.3 8.8 -9.6 |
mit | --- -915.0 1.5 1.4 -1.1 -1.7 |
ncl | --- -2.6 1.4 --- .0 --- |
ITR | --- --- --- --- --- --- |
BuA | --- -6.9 -7.0 1.8 21.0 -.4 |
---------------|------------------------------------------------------------|
5-5-2) STD :
===============
Solution | UT LOD XPO XPOR YPO YPOR |
| us us .01mas .01ma/d .01mas .01ma/d |
---------------|------------------------------------------------------------|
cod | --- 7.3 1.2 --- 2.4 --- |
emr | --- 4.8 2.4 14.9 3.6 7.4 |
esa | --- 20.1 3.3 --- 5.9 --- |
gfz | --- 13.8 3.7 6.1 4.2 7.1 |
jpl | --- 6.4 1.4 8.6 1.9 6.7 |
ngs | --- 26.5 8.9 64.5 13.8 25.6 |
sio | --- 6.8 2.1 7.7 5.6 8.8 |
mit | --- 197.8 1.9 4.1 4.0 8.3 |
ncl | --- 2.1 1.1 --- .8 --- |
ITR | --- --- --- --- --- --- |
BuA | --- 21.1 3.3 9.5 8.8 10.5 |
---------------|------------------------------------------------------------|
5-6) Outliers:
===================
Thresholds set at 5 sigmas and 50 mm.
Solution Solution | Station | N E U |
Minus |code id soln| (mm) (mm) (mm)|
-----------------------------------------|------------|-----------------------|
| | |
IGS01P37_RS54.snx esa11707.snx |CHAT A ----| 2.1 -5.2 -85.7|
| | |
IGS01P37_RS54.snx gfz11707.snx |GUAM A ----| 17.5 -6.9 19.3|
| | |
IGS01P37_RS54.snx jpl11707.snx |GUAM A ----| 15.7 -8.6 16.9|
| | |
IGS01P37_RS54.snx ngs11707.snx |GUAM A ----| 24.1 -4.8 26.4|
| | |
IGS01P37_RS54.snx sio11707.snx |SANT A ----| -0.4 8.8 52.8|
| | |
IGS01P37_RS54.snx ncl1170g.snx |GUAM A ----| 17.0 -7.7 10.0|
| | |
emr11707.snx jpl11707.snx |LAE1 A ----| 1.2 2.7 50.0|
| | |
IGS02P23.snx jpl11707.snx |TUBI A ----| -51.4 13.4 176.6|
| | |
IGS02P23.snx jpl11707.snx |BOGT A ----| -1.5 -13.0 -6.3|
IGS02P23.snx jpl11707.snx |HOLB A ----| 3.7 4.4 52.5|
| | |
IGS02P23.snx mit1170g.snx |TUBI A ----| -48.7 12.6 171.2|
| | |
IGS02P23.snx igs02P1170.snx |BOGT A ----| -1.2 -15.1 -9.2|
-----------------------------------------|------------|-----------------------|
5-7) Conflicts:
===========================
5-7-1) Station Name Conflicts:
=============================
IERS DOMES NO cod emr esa gfz jpl ngs sio IGS igs
============= ====== ====== ====== ====== ====== ====== ====== ====== ======
50103M108 TIDB A TID2 A TIDB A TIDB A TID2 A TID2 A TIDB A TIDB A
TIDB A
30314M002 SUTH A SUTH B SUTH A SUTH A SUTH A SUTH A SUTH A SUTH A
42005M001 GALA A GALA A GALA B GALA A GALA A GALA B GALA A GALA A GALA 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 MAD2 A MADR A MADR A
40114M001 NRC1 A NRC1 A NRC1 A NRC1 A NRC1 A NRC1 A NRC1 A
NRC2 A
40405S031 GOLD A GOLD A GOL2 A GOL2 A GOLD A GOLD A
50107M004 YAR2 A YAR1 A YAR1 A
MISSING IERS DOMES NOS AT sio:
-----------------------------
CAVA A SFEL A VOLT A
IERS DOMES NO mit ncl IGS igs
============= ====== ====== ====== ======
13407S012 MADR A MADR A MADR A
MAD2 A
31303M001 MAS1 A
31303M002 MAS1 A MAS1 A MAS1 A
40114M001 NRC1 A NRC1 A NRC1 A NRC1 A
NRC2 A
40405S031 GOLD A GOLD A GOLD A
GOL2 A
50103M108 TIDB A TID2 A TIDB A TIDB A
TID2 A TIDB A
50107M004 YAR2 A YAR1 A YAR1 A
MISSING IERS DOMES NOS AT mit:
-----------------------------
CAVA A SFEL A VOLT A
5-7-2) Station Antenna Conflicts:
================================
_______________________
|Enforcing these aliases|
|_______________________|
YAR1 A: YAR2 A
SUTH A: SUTH B
IISC A: IISC B
TIDB A: TID2 A
GALA A: GALA B
MADR A: MAD2 A
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 esa11707.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 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
File: jpl11707.snx (jpl).
---- (SITE/GPS_PHASE_CENTER records)
Setting this antenna to zero.
ASH700936C_M ASHT 11976 ------ ------ ------ ------ ------ ------
May affect some sites listed below.
Setting this antenna to zero.
ASH700936C_M ASHT 12129 ------ ------ ------ ------ ------ ------
May affect some sites listed below.
Antenna Conflicts in file jpl11707.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 RIOG A .0000 .0000 .0000 .0000 .0000 .0000 .0350 .0000 .0000
IGS RIOG A .1100 .0000 .0000 .1280 .0000 .0000 .0350 .0000 .0000
jpl SCUB A .0000 .0000 .0000 .0000 .0000 .0000 .0460 .0000 .0000
IGS SCUB A .1100 .0000 .0000 .1280 .0000 .0000 .0460 .0000 .0000
File: mit1170g.snx (mit).
---- (SITE/GPS_PHASE_CENTER records)
Setting this antenna to zero.
ASH700936C_M ASH 12129 ****** ****** ****** ****** ****** ****** IGS_01
May affect some sites listed below.
Setting this antenna to zero.
ASH700936C_M ASH 11976 ****** ****** ****** ****** ****** ****** IGS_01
May affect some sites listed below.
Antenna Conflicts in file mit1170g.snx (mit).
------- --------- -- ----
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.)
=== ==== == ==== ==== ==== ==== ==== ==== ==== ==== ====
mit 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
mit RIOG A .0000 .0000 .0000 .0000 .0000 .0000 .0350 .0000 .0000
IGS RIOG A .1100 .0000 .0000 .1280 .0000 .0000 .0350 .0000 .0000
mit SCUB A .0000 .0000 .0000 .0000 .0000 .0000 .0460 .0000 .0000
IGS SCUB A .1100 .0000 .0000 .1280 .0000 .0000 .0460 .0000 .0000
File: ncl1170g.snx (ncl).
---- (SITE/GPS_PHASE_CENTER records)
Setting this antenna to zero.
ASH700936C_M ASHT 12126 ------ ------ ------ ------ ------ ------
May affect some sites listed below.
Setting this antenna to zero.
ASH700936C_M ASHT 12129 ------ ------ ------ ------ ------ ------
May affect some sites listed below.
Antenna Conflicts in file ncl1170g.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 RIOG A .0000 .0000 .0000 .0000 .0000 .0000 .0350 .0000 .0000
IGS RIOG A .1100 .0000 .0000 .1280 .0000 .0000 .0350 .0000 .0000
Antenna Conflicts in file ngs11707.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 MCM4 A .1100 .0000 .0000 .1280 .0000 .0000 .1830 .0000 .0000
IGS MCM4 A .1100 .0000 .0000 .1280 .0000 .0000 .0814 .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 2.3200 .0000 .0000
IGS WUHN A .1100 .0000 .0000 .1280 .0000 .0000 2.3200 .0000 .0000
Antenna Conflicts in file sio11707.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 CHAT A .1100 .0000 .0000 .1280 .0000 .0000 .0031 .0000 .0000
IGS CHAT A .1100 .0000 .0000 .1280 .0000 .0000 .0062 .0000 .0000
sio NOUM A .1100 .0000 .0000 .1280 .0000 .0000 .0000 .0000 .0000
IGS NOUM A .0714 .0003 .0005 .0682 -.0004 .0001 .0000 .0000 .0000
The following files have no antenna conflicts:
- cod11707.snx (cod)
- emr11707.snx (emr)
- gfz11707.snx (gfz)
--
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: hutch at geod.emr.ca
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