From rferland at nrcan.gc.ca Thu Jan 20 15:30:11 2005 From: rferland at nrcan.gc.ca (Remi Ferland) Date: Thu, 20 Jan 2005 18:30:11 -0500 (EST) Subject: [IGSREPORT-12164] Wk 1304 IGS SINEX Combination Message-ID: <200501202330.j0KNUBK17927@cassini.geod.nrcan.gc.ca> ****************************************************************************** IGS Electronic Report 20 Jan 15:30:03 PST 2005 Message Number 12164 ****************************************************************************** Author: R. Ferland , D. Hutchison =================================================================== Combined AC solution for GPS week 1304 - 05/01/02 to 05/01/08 =================================================================== 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 igs05P1304.snx Combined weekly solution. igs05P1304.erp Daily Earth Rotation Parameters. igs00p02.erp Daily Earth Rotation Parameters since GPS week 1013. IGS05P01.snx Cumulative Combined solution. igs05P1304.sum This file. igs05P1304.itr Residuals between the AC and the IGb00 for the RF stations. igs05P1304.res Residuals between the AC and the Combined Weekly solution. IGS05P01.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 = igs05P1304.snx IGS = IGS05P01.snx MIT = mit13047.snx mit = mit1304g.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). Solutions with manual station deletion: After unconstraining: esa SYOG 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 | 162 | 70 | 29.516 | 1.000 | 29.521 | emr | 48 | 32 | 4.738 | 0.998 | 4.726 | esa | 69 | 53 | 7.297 | 0.993 | 7.245 | gfz | 179 | 77 | 10.919 | 0.999 | 10.908 | jpl | 122 | 51 | 5.892 | 0.999 | 5.884 | MIT | 134 | 57 | 3.594 | 0.998 | 3.588 | ngs | 131 | 70 | 31.540 | 0.921 | 29.051 | sio | 167 | 76 | 2.810 | 0.999 | 2.807 | mit | 267 | 77 | 0.896 | 0.950 | 0.851 | ncl | 163 | 80 | 3.024 | 1.070 | 3.235 | igs | 240 | 80 | 1.297 | 1.039 | 1.347 | ---------------|-----|-----|---------------|---------------|---------------| 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 70 | 0.4 0.1 0.3 | 3.1 3.7 11.8 | emr 32 | -1.9 0.0 2.3 | 3.9 2.6 12.4 | esa 53 | -0.6 0.1 0.6 | 3.2 2.8 12.3 | gfz 77 | -1.0 -0.1 0.0 | 3.3 3.3 11.5 | jpl 51 | -1.4 0.1 0.5 | 3.6 3.6 11.8 | MIT 57 | 0.1 0.3 0.7 | 3.2 3.9 11.2 | ngs 70 | -2.0 0.1 1.1 | 5.1 5.1 12.4 | sio 76 | 0.3 0.3 0.5 | 3.7 3.9 8.7 | mit 77 | -0.4 0.1 0.9 | 2.9 3.0 9.3 | ncl 80 | 0.1 0.0 0.8 | 2.8 3.0 9.0 | ---------------|---------------------------|---------------------------| 5-2-2) With respect to the Weekly Combination: ================================================= Solution | Weighted Average (mm) | STD (mm) | | N E U | N E U | ---------------|---------------------------|---------------------------| cod 157 | 0.1 -0.1 -0.8 | 1.3 1.5 5.4 | emr 48 | -1.7 -0.7 1.5 | 1.8 1.4 6.6 | esa 67 | -0.2 -0.1 0.6 | 2.3 2.4 12.6 | gfz 170 | -1.2 -0.3 -0.2 | 1.5 1.9 4.5 | jpl 117 | -1.1 -0.5 0.2 | 2.0 2.7 8.0 | MIT 116 | 0.3 0.3 -1.2 | 1.6 1.6 4.6 | ngs 124 | -1.4 0.1 -0.8 | 3.5 4.3 7.2 | sio 149 | 0.8 0.1 0.3 | 2.4 2.2 6.2 | mit 228 | -0.1 -0.1 -0.3 | 0.7 0.6 2.5 | ncl 155 | 0.1 -0.1 0.4 | 0.9 0.6 2.9 | ITR 79 | 0.1 -0.0 -1.3 | 2.5 2.7 9.9 | ---------------|---------------------------|---------------------------| 5-2-3) With respect to the Cumulative Combination: ===================================================== Solution | Weighted Average (mm) | STD (mm) | | N E U | N E U | ---------------|---------------------------|---------------------------| cod 129 | 0.3 0.2 0.3 | 3.0 3.0 9.0 | emr 44 | -2.5 -0.7 2.4 | 3.0 2.1 10.2 | esa 66 | -0.7 0.1 0.3 | 3.1 2.8 12.8 | gfz 156 | -1.2 -0.2 0.9 | 2.9 2.8 7.8 | jpl 100 | -1.1 -0.2 0.9 | 3.3 3.8 9.8 | MIT 105 | 0.4 0.3 0.2 | 2.5 3.2 7.1 | ngs 119 | -1.3 0.0 -0.1 | 4.3 5.0 10.0 | sio 140 | 1.0 0.2 0.8 | 3.9 4.0 6.9 | mit 170 | -0.2 0.1 0.7 | 2.4 2.5 5.9 | ncl 145 | 0.3 -0.1 1.3 | 2.7 2.5 6.0 | igs 174 | -0.1 0.1 0.9 | 2.4 2.1 6.3 | ITR 85 | -0.3 0.0 -0.6 | 1.2 1.2 3.8 | ---------------|---------------------------|---------------------------| 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 | -0.046 0.024 -0.014 15.5 10.8 7.5 2.84 | emr | -0.023 -0.015 -0.010 7.8 11.4 -7.1 3.88 | esa | -0.006 -0.023 0.004 -3.6 3.8 5.8 2.78 | gfz | 0.056 -0.057 0.036 -0.2 1.9 -5.3 2.06 | jpl | 0.140 -0.041 0.098 4.3 17.7 -6.0 1.45 | MIT | 0.219 -0.159 0.000 9.9 13.0 27.5 3.57 | ngs | 0.093 0.026 -0.013 -0.2 16.7 28.7 3.25 | sio | -0.031 0.020 0.005 14.3 10.6 50.1 2.93 | mit | -0.004 0.014 -0.012 -1.3 -0.2 -1.3 2.97 | ncl | 0.032 -0.047 -0.015 1.5 1.6 -3.4 2.55 | ---------------|---------------------------------------------------------------| 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 | 0.048 0.049 0.054 1.3 1.3 1.3 0.20 | emr | 0.069 0.067 0.082 1.8 1.8 1.8 0.28 | esa | 0.053 0.054 0.060 1.4 1.4 1.4 0.22 | gfz | 0.045 0.045 0.052 1.2 1.2 1.2 0.18 | jpl | 0.055 0.053 0.063 1.4 1.4 1.4 0.22 | MIT | 0.052 0.052 0.061 1.4 1.4 1.3 0.21 | ngs | 0.046 0.047 0.053 1.2 1.2 1.2 0.19 | sio | 0.046 0.047 0.052 1.2 1.2 1.2 0.19 | mit | 0.045 0.046 0.053 1.2 1.2 1.2 0.19 | ncl | 0.045 0.045 0.051 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 | 9.2 11.2 6.4 | 3.4 3.5 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 | --- -2.5 0.2 --- -3.6 --- | emr | --- 16.0 -0.4 11.2 -8.1 -15.1 | esa | --- 11.0 8.8 --- -2.4 --- | gfz | --- -2.9 3.9 -1.3 10.5 9.5 | jpl | --- -6.0 -2.0 2.9 -3.2 -1.4 | MIT | --- -18.3 -1.7 -2.1 6.2 1.0 | ngs | --- -8.0 -7.6 -6.6 9.5 -20.2 | sio | --- 0.8 -0.0 3.8 6.6 -3.0 | mit | --- 14.1 -1.7 -1.6 5.2 0.5 | ncl | --- 3.6 1.6 --- -1.2 --- | ITR | --- --- --- --- --- --- | BuA | --- -12.3 -0.2 0.1 30.4 1.2 | ---------------|------------------------------------------------------------| 5-5-2) STD : =============== Solution | UT LOD XPO XPOR YPO YPOR | | us us .01mas .01ma/d .01mas .01ma/d | ---------------|------------------------------------------------------------| cod | --- 6.1 1.3 --- 1.0 --- | emr | --- 7.3 4.2 10.3 3.7 16.6 | esa | --- 17.5 4.4 --- 4.8 --- | gfz | --- 4.4 2.5 5.1 2.2 10.6 | jpl | --- 19.4 3.8 40.1 2.5 9.0 | MIT | --- 5.3 3.5 7.7 2.1 6.8 | ngs | --- 14.5 9.6 24.6 7.1 14.2 | sio | --- 6.7 3.2 3.6 2.9 6.8 | mit | --- 11.5 3.4 5.1 2.3 8.1 | ncl | --- 2.7 1.8 --- 1.6 --- | ITR | --- --- --- --- --- --- | BuA | --- 21.5 5.9 7.7 5.3 11.2 | ---------------|------------------------------------------------------------| 5-6) Outliers: =================== Thresholds set at 5 sigmas and 50 mm. Solution Solution | Station | N E U | Minus |code id soln| (mm) (mm) (mm)| -----------------------------------------|------------|-----------------------| | | | IGS03P33_RS99.snx esa13047.snx |ARTU A ----| 2.7 2.1 50.4| | | | IGS04P52.snx cod13047.snx |YAKT A ----| 31.3 -36.9 -25.5| | | | IGS04P52.snx esa13047.snx |KIRU A ----| -8.1 -4.4 -60.2| | | | IGS04P52.snx gfz13047.snx |YAKT A ----| 23.9 -31.0 -23.6| | | | IGS04P52.snx gfz13047.snx |KIRU A ----| -9.2 2.6 -60.2| IGS04P52.snx gfz13047.snx |RESO A ----| 14.5 0.7 -13.6| | | | IGS04P52.snx jpl13047.snx |YAKT A ----| 23.5 -36.1 -37.2| | | | IGS04P52.snx MIT13047.snx |YAKT A ----| 38.0 -40.1 -23.1| | | | IGS04P52.snx MIT13047.snx |KIRU A ----| -12.1 0.1 -61.7| IGS04P52.snx MIT13047.snx |TVST A ----| -19.1 6.0 -44.8| | | | IGS04P52.snx ngs13047.snx |YAKT A ----| 31.3 -38.7 -10.9| | | | IGS04P52.snx sio13047.snx |ELAT A ----| -4.2 -13.1 55.6| IGS04P52.snx sio13047.snx |KIRU A ----| -13.9 -2.4 -61.5| IGS04P52.snx sio13047.snx |RESO A ----| 17.0 3.6 -11.9| | | | IGS04P52.snx mit1304g.snx |YAKT A ----| 28.7 -35.2 -27.4| | | | IGS04P52.snx mit1304g.snx |ELAT A ----| -6.3 -11.8 53.7| IGS04P52.snx mit1304g.snx |KIRU A ----| -9.3 -2.4 -61.0| IGS04P52.snx mit1304g.snx |RESO A ----| 14.3 2.5 -12.4| IGS04P52.snx mit1304g.snx |USUD A ----| 14.1 3.4 10.3| | | | IGS04P52.snx ncl1304g.snx |YAKT A ----| 30.6 -35.2 -20.4| | | | IGS04P52.snx ncl1304g.snx |KIRU A ----| -9.8 -0.5 -60.9| | | | IGS04P52.snx igs05P1304.snx |BAN2 A ----| -0.7 -15.0 -0.4| IGS04P52.snx igs05P1304.snx |CHUR A ----| -3.0 -8.1 7.8| IGS04P52.snx igs05P1304.snx |FAIR A 2| -2.8 6.5 8.6| IGS04P52.snx igs05P1304.snx |MAG0 A ----| 7.7 9.5 -10.7| IGS04P52.snx igs05P1304.snx |MANA A ----| 11.0 5.4 3.0| IGS04P52.snx igs05P1304.snx |SCH2 A ----| 7.1 7.9 3.1| IGS04P52.snx igs05P1304.snx |USUD A ----| 13.7 2.6 8.0| -----------------------------------------|------------|-----------------------| 5-7) Conflicts: ==================== IERS DOMES NO MIT cod emr esa gfz jpl ngs sio IGS igs ============= ====== ====== ====== ====== ====== ====== ====== ====== ====== ====== 43001M003 THU3 A 43001M002 THU2 A THU3 A THU3 A THU3 A THU3 A THU3 A THU3 A THU3 A THU2 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 50103M108 TIDB A TIDB A TIDB A TID1 A TIDB A TID2 A TIDB A TIDB A TID1 A TIDB A TID2 A 50134M001 DARW A DARR A DARW A DARW A DARR A DARW A DARW A DARW A DARW A DARW A 22003M001 PIMO A PIMO A PIMO A PIMO B PIMO A PIMO A PIMO A PIMO A PIMO A PIMO A 66010M001 DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAV1 A DAVR A DAVR A 22306M002 IISC A IISC A IISC A IISC B IISC A IISC A IISC B IISC A IISC A IISC A 40405S031 GOLD A GOLD A GOLD A GOLD A GOL2 A GOLD A GOLD A 10422M001 KIR0 A KIR0 A KR0G A 20710S001 DRAG A DRAG A DRAG A MISSING IERS DOMES NOS AT MIT: ----------------------------- HLFX A PALM A PUR3 A MIA3 A CCV3 A KYW1 A MCD1 A ARP3 A GUAX A UPO1 A OUSD A MTJO A HORN A QUAR 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 ============= ====== ====== ====== ====== 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 66010M001 DAV1 A DAV1 A DAV1 A DAV1 A DAVR A 11101M002 SOFI A SOFI A SOFI A MISSING IERS DOMES NOS AT mit: ----------------------------- MAC1 B BISH A