[IGSREPORT-5366] Wk 0971 G-SINEX Comparisons (NEW FORMAT)
AC
AC
Wed Sep 30 06:54:28 PDT 1998
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IGS Electronic Report Wed Sep 30 6:54:28 PDT 1998 Message Number 5366
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0971 G-SINEX Comparisons (NEW FORMAT)
Comparison of GNAAC Combined SINEX Solutions - Week 0971
(AUG 16, 1998 - AUG 22, 1998)
Contacts: J. Kouba (kouba at geod.emr.ca)
D. Hutchison (hutch at geod.emr.ca)
R. Ferland (ferland at geod.emr.ca)
COMPARISON ALGORITHM:
1. MIT and NCL GNAAC combined SINEX solutions for the week in question
were deconstrained. The JPL SINEX file is already unconstrained.
2. Any station present in only one GNAAC combined SINEX files was de-
leted from all three combined solutions. Every solution was then sub-
jected to a 7-parameter transformation into a common reference system
(the positions of the ITRF96 RS47 station set expected at mid-week).
Station coordinates with ITRF96 transformation residuals in excess of
30 mm. from ITRF96 after transformation were excluded from subsequent
analysis of this combined solution, and the 7-parameter transformation
was reapplied.
WARNING: This step has been modified starting week 971.
3. Outliers are determined at the 99.0% confidence level for each coordin-
ate. If a station has an outlier in either latitude, longitude, or
height, it is ignored in all subsequent computations.
FILES COMPARED:
jpl0971g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0971g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0971g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
GNAACs: JPL MIT NCL
STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))
jpl0971g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0971g.snx: BARB .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0971g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0971g.snx: TAHI .110 .000 .000 .128 .000 .000 1.055 .000 .000
mit0971g.snx: TAHI .110 .000 .000 .128 .000 .000 1.047 .000 .000
- JPL refers to IERS DOMES No. 92201M006, MIT to 92201M009.
However, the proper name code for 92201M009 should be THTI.
mit0971g.snx: HFLK .110 .000 .000 .128 .000 .000 -.020 .000 .000
ncl0971g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0971g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0971g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0971g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
mit0971g.snx: WUHN .110 .000 .000 .128 .000 .000 2.320 .000 .000
FILE ncl0971g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0971g.snx
(MODEL / SER. NO. / L1 (UNE) / L2 (UNE))
(UNE = Up North East (metres))
DORNE MARGOLIN B ----- .078 .000 .000 .096 .000 .000
DORNE MARGOLIN B ----- .000 .000 .000 .000 .000 .000
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: NYAL
ANTENNA PHASE CENTRE CONFLICTS IN FILE mit0971g.snx
GALA Multiple Sites
IISC Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: GALA IISC
COORDINATE DIFFERENCE THRESHOLD FOR STATION REJECTION: 30 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
THE FOLLOWING STATIONS WERE DELETED FROM JPL
DUE TO DIFFERENCES IN EXCESS OF 30 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Lat DAV1 -56.7 mm.
Lat KERG -52.9 mm.
Lat MALI -45.1 mm.
Lon OHIG -37.9 mm.
Hgt THU1 -33.6 mm.
Lon SANT -30.4 mm.
Lon TIDB 35.5 mm.
Lon HOB2 37.0 mm.
Lon MAC1 52.4 mm.
Hgt HOB2 95.9 mm.
Lon HART 238.6 mm.*
Lat HART 643.3 mm.*
*Proper offset may not have been used:
30302M002 to 30302M007 dx/dy/dz: -.145m., -.374m., -.623m.
THE FOLLOWING STATIONS WERE DELETED FROM NCL
DUE TO DIFFERENCES IN EXCESS OF 30 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 78.4 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat NTUS JPL-MIT Lat TID2 JPL-MIT Lat MAW1 JPL-MIT
Lat TOW2 JPL-MIT Lat DARW JPL-MIT Lat COCO JPL-MIT
Lat ALIC JPL-MIT Lat CEDU JPL-MIT Lat KARR JPL-MIT
Lat YAR1 JPL-MIT Lat CAS1 JPL-MIT Lat PERT JPL-MIT
Lat CAS1 JPL-NCL Lon CHAT JPL-MIT Lon MCM4 JPL-MIT
Lon AUCK JPL-MIT Lon THTI JPL-MIT Lon NOUM JPL-MIT
Lon TID2 JPL-MIT Lon DARW JPL-MIT Lon HARK JPL-MIT
Lon CHAT JPL-NCL Lon AUCK JPL-NCL Lon MCM4 JPL-NCL
Lon TID2 JPL-NCL Hgt MDVO JPL-MIT Hgt MDVO MIT-NCL
Hgt COCO JPL-MIT Hgt CAGL JPL-MIT Hgt MDVO JPL-MIT
Hgt MDVO MIT-NCL Hgt COCO MIT-NCL
120 GLOBAL STATIONS:
ALBH ALGO AMCT ANKR AOML AREQ ASC1 BAHR BAKO BOGO
BOGT BOR1 BRMU BRUS CHUR CRO1 DAV1 DGAR DRAO DUBO
EBRE EISL ELAT FAIR FLIN FORT GILB GLSV GODE GOL2
GOLD GOPE GRAS GRAZ GUAM HERS HOFN HOLB IRKT JOZE
JPLM KABR KATZ KELY KERG KIRU KIT3 KOKB KOSG KOUR
KSTU KWJ1 LAMA LHAS LPGS MAC1 MAD2 MADR MAG0 MALI
MAS1 MATE MDO1 MEDI METS MKEA NANO NICO NLIB NOTO
NRC1 NSSP NYA1 OBER OHIG ONSA PENC PETR PIE1 POL2
POTS PRDS QUIN RAMO REYK RIOG SANT SCH2 SELE SHAO
SOL1 STJO SUWN TAEJ TELA THU1 TIDB TOUL TRO1 TSKB
UCLU UPAD URUM USNA USNO USUD VILL WES2 WHIT WILL
WSLR WSRT WTZR XIAN YAKA YAKZ YELL ZECK ZIMM ZWEN
40 FIDUCIAL STATIONS:
ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1 MADR
MALI MATE MDO1 NLIB OHIG ONSA PERT PIE1 POTS SANT
SHAO THU1 TIDB TSKB VILL WES2 WTZR YAR1 YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
120 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 2.1 2.4 1.3 3.6 4.7 5.1
Lon 1.0 1.2 1.1 4.3 6.3 6.4
Hgt 3.4 2.7 3.4 10.5 10.5 10.5
3D 4.1 3.8 3.8 11.9 13.1 13.3
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
130 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.401 0.222 0.419 2.702 3.757 3.045
OFFSETS AND SCALE FACTOR WRT ITRF96 (FIDUCIAL STATIONS):
(TRANSFORMATION FROM ITRF96 TO GNAAC SINEX FILES)
Tx (mm) STD(mm) Ty (mm) STD(mm) Tz (mm) STD(mm) Scale (ppb) STD(ppb)
------- ------- ------- ------- ------- ------- ----------- --------
JPL 6.7 2.4 -6.9 2.4 -14.3 3.3 0.6 0.2
MIT 7.1 2.0 -1.5 2.0 -18.5 2.8 -0.2 0.1
NCL 7.2 2.6 -2.0 2.7 -10.6 3.5 0.3 0.1
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0971g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0971g.snx :
Stations: BRAZ MASP
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0971g.snx :
Stations: BRAZ HART MADR MASP
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN COMPARED GNAAC FILES:
(ENTRIES APPEAR ONLY WHERE GNAACS DIFFER.)
IERS DOMES NO JPL MIT NCL
============= ====== ====== ======
42202M005 AREQ A AREQ A AREQ A
ARE1 A
42005M001 GALA A GALA A GALA A
GAL1 A GALA B
40405S031 GOL2 A GOLD A GOL2 A
GOLD A GOL2 A GOLD A
GOL1 A
30302M007 HARK A HARK A HARK A
HART A HART B
HAR1 A
22306M002 IISC A IISC A IISC A
IIS1 A IISC B
13407S012 MAD2 A MAD2 A
MADR A MADR A
31303M002 MAS1 A MAS1 A
MASP A
31303M001 MAS1 A
12309M002 MDVO A MDVO A
MDV1 A
12309M001 MDVO A
22601M001 NTUS A NTUS A
22601M002 NTUS A
10317M003 NYA1 A NYA1 A
92201M006 TAHI A
92201M009 THTI A THTI A THTI A
TAHI A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
12353M001 YAKA A YAKA A YAKZ A
YAKZ A YAKZ A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A DARW A ELAT A GILB A KABR A KARR A KATZ A MAW1 A RAMO A
RIOG A TELA A TOW2 A URUM A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
RIOG A BAKO A URUM A KATZ A GILB A KABR A ELAT A TELA A RAMO A
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN ABBREVIATED .ssc FILES:
cod09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09717.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
(ENTRIES APPEAR ONLY WHERE GNAACS DIFFER.)
IERS DOMES NO COD NRCan ESA GFZ JPL NGS SIO
============= ====== ====== ====== ====== ====== ====== ======
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ B AREQ A
12309M002 MDVO A MDVO B MDVO A MDVO A
12353M001 YAKZ A YAKA A YAKZ A
YAKZ A YAKA A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TID2 A
50107M004 YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
92201M009 TAHI A THTI A THTI A THTI A THTI A
42005M001 GALA A GALA A GALA A GALA B GALA A
10302M006 TROM A TRO1 A
22601M001 NTUS A NTUS A NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
13407S012 MADR A MAD2 A MADR A MAD2 A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
URUM A RIOG A
MISSING IERS DOMES NOS AT SIO:
-----------------------------
BAKO A KATZ A GILB A KABR A ELAT A TELA A RAMO A
--
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: hutch at geod.emr.ca
[Mailed From: David Hutchison <hutch at geod.nrcan.gc.ca>]
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