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[IGSREPORT-5368] Wk 0973 G-SINEX Comparisons
- Subject: [IGSREPORT-5368] Wk 0973 G-SINEX Comparisons
- From: AC Coordinator / NRCan GSDivision
- Date: Wed, 30 Sep 1998 6:56:33 PDT
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IGS Electronic Report Wed Sep 30 6:56:33 PDT 1998 Message Number 5368
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0973 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0973
(AUG 30, 1998 - SEP 5, 1998)
Contacts: J. Kouba (kouba @ geod.emr.ca)
D. Hutchison (hutch @ geod.emr.ca)
R. Ferland (ferland @ 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.
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:
mit0973g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl0973g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0973g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
GNAACs: MIT JPL NCL
STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))
jpl0973g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0973g.snx: BARB .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0973g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0973g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0973g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
- Both wrong. Should be L1/L2 offset, eccentricity 0.110, 0.128, 0.119 M. respectively.
jpl0973g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
ncl0973g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0973g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
FILE ncl0973g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0973g.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 mit0973g.snx
GALA Multiple Sites
IISC Multiple Sites
NYAL Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: GALA IISC NYAL
COORDINATE DIFFERENCE THRESHOLD FOR STATION REJECTION: 30 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
THE FOLLOWING STATIONS WERE DELETED FROM NCL
DUE TO DIFFERENCES IN EXCESS OF 30 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt GUAM -33.0 mm.
Hgt HOB2 107.9 mm.
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 -56.5 mm.
Lat KERG -52.8 mm.
Lat MALI -46.4 mm.
Lon OHIG -37.5 mm.
Hgt GUAM -31.8 mm.
Lon HOB2 30.7 mm.
Lon TIDB 30.9 mm.
Lon MAC1 46.4 mm.
Hgt HOB2 126.9 mm.
Lon HART 236.7 mm.*
Lat HART 646.5 mm.*
*Proper offset may not have been used:
30302M002 to 30302M007 dx/dy/dz: -.145m., -.374m., -.623m.
THE FOLLOWING STATIONS WERE DELETED FROM MIT
DUE TO DIFFERENCES IN EXCESS OF 30 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 69.2 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat SANT JPL-NCL Lat YAR1 JPL-NCL Lat PERT JPL-NCL
Lat COCO JPL-NCL Lat COCO MIT-JPL Lat YAR1 MIT-JPL
Lat MAW1 MIT-JPL Lat PERT MIT-JPL Lat KARR MIT-JPL
Lat CEDU MIT-JPL Lat DGAR MIT-JPL Lat ALIC MIT-JPL
Lat CAS1 MIT-JPL Lat HARK MIT-JPL Lat DARW MIT-JPL
Lon NTUS JPL-NCL Lon CHAT JPL-NCL Lon MCM4 JPL-NCL
Lon AUCK MIT-JPL Lon CHAT MIT-JPL Lon NTUS MIT-NCL
Lon COCO MIT-NCL Hgt COCO JPL-NCL Hgt MDVO MIT-JPL
Hgt NTUS JPL-NCL Hgt COCO JPL-NCL Hgt MDVO MIT-JPL
Hgt CAGL MIT-JPL Hgt COCO MIT-JPL Hgt NTUS MIT-JPL
Hgt COCO MIT-NCL
119 GLOBAL STATIONS:
ALBH ALGO AMCT AREQ ASC1 BAHR BAKO BOGO BOGT BOR1
BRMU BRUS CASA CHUR CRO1 DAV1 DRAO DUBO EBRE EISL
ELAT FAIR FLIN FORT GILB GLSV GODE GOL2 GOLD GOPE
GRAS GRAZ HERS HOFN HOLB IRKT JOZE JPLM KABR KATZ
KELY KERG KIRU KIT3 KOKB KOSG KOUR KWJ1 LAMA LHAS
LPGS MAC1 MAD2 MADR MAG0 MALI MAS1 MATE MDO1 MEDI
METS MKEA NANO NICO NLIB NOTO NOUM NRC1 NSSP OBER
OHIG ONSA PENC PETR PIE1 POL2 POTS PRDS QUIN RAMO
RCM6 REYK RICH RIOG SCH2 SELE SHAO SOL1 STJO SUWN
TAEJ TELA THU1 TID2 TIDB TOUL TOW2 TRO1 TSKB UCLU
UPAD URUM USNA USNO USUD VILL WES2 WHIT WILL WSLR
WSRT WTZR WUHN XIAN YAKA YAKZ YELL ZECK ZIMM
38 FIDUCIAL STATIONS:
ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ 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
AVERAGE COORDINATE RMS USING ITRF96:
119 GLOBAL STATIONS 38 FIDUCIAL STATIONS
MIT-JPL MIT-NCL JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.6 0.9 1.7 4.1 3.4 4.6
Lon 2.2 0.8 2.6 6.0 4.2 6.3
Hgt 3.1 3.4 3.5 10.8 11.1 10.7
3D 4.1 3.6 4.7 13.0 12.4 13.2
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
125 GLOBAL STATIONS 38 FIDUCIAL STATIONS
JPL-NCL MIT-JPL MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
1.502 2.158 0.390 3.920 4.023 3.183
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 1.7 1.8 -20.9 1.9 -15.1 2.4 0.5 0.1
MIT -0.6 1.9 -9.2 1.9 -23.2 2.4 0.1 0.1
NCL 1.9 2.4 -14.2 2.5 -14.5 3.3 0.0 0.1
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0973g.snx :
Stations: BRAZ MASP TROM ZWEN
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0973g.snx :
Stations: BRAZ TROM ZWEN
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0973g.snx :
Stations: BRAZ HART MADR MASP NLIB TROM ZWEN
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
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B
40499S020 RCM6 A RCM6 A RCM6 A
RICH A RICH 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:
cod09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09737.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
(ENTRIES APPEAR ONLY WHERE ACS DIFFER.)
IERS DOMES NO COD NRCan ESA GFZ JPL NGS SIO
============= ====== ====== ====== ====== ====== ====== ======
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
12309M002 MDVO A MDVO B MDVO A MDVO A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ 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
40499S020 RICH A RCM6 A RCM6 A RCM6 A
12353M001 YAKZ A YAKA A YAKZ A
YAKZ A YAKA A
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
10317M003 NYAL A NYA1 A NYA1 A
13407S012 MADR A MAD2 A MADR A MAD2 A
22601M001 NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
42005M001 GALA A GALA A GALA B GALA 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 @ geod.emr.ca
[Mailed From: David Hutchison <hutch @ geod.nrcan.gc.ca>]