[IGSREPORT-5399] Wk 0975 G-SINEX Comparisons
AC
AC
Fri Oct 9 08:28:47 PDT 1998
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IGS Electronic Report Fri Oct 9 8:28:47 PDT 1998 Message Number 5399
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0975 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0975
(SEP 13, 1998 - SEP 19, 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
55 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:
jpl0975g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0975g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0975g.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))
jpl0975g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0975g.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.
jpl0975g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
jpl0975g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0975g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
FILE ncl0975g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0975g.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 mit0975g.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: 55 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
THE FOLLOWING STATIONS WERE DELETED FROM NCL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 82.6 mm.
THE FOLLOWING STATIONS WERE DELETED FROM MIT
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 80.4 mm.
IN SITE/ID BLOCK, JPL HART A REFERS TO IERS DOMES NO. 30302M007.
SO THE FOLLOWING CORRECTIONS WERE APPLIED TO CONVERT TO HART A 30302M002:
dx/dy/dz: .145 M., .374 M., .623 M.
THE FOLLOWING STATIONS WERE DELETED FROM JPL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 90.2 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat HARK JPL-MIT Lat TOW2 JPL-MIT Lat TIDB JPL-MIT
Lat MAC1 JPL-MIT Lat COCO JPL-MIT Lat CEDU JPL-MIT
Lat ALIC JPL-MIT Lat NTUS JPL-MIT Lat PERT JPL-MIT
Lat KARR JPL-MIT Lat DGAR JPL-MIT Lat YAR1 JPL-MIT
Lat TID2 JPL-MIT Lat OHIG MIT-NCL Lon MALI JPL-MIT
Lon KWJ1 JPL-MIT Lon COCO JPL-MIT Lon MAS1 JPL-MIT
Lon HARK JPL-MIT Lon BOGT JPL-MIT Lon FORT JPL-MIT
Lon LPGS JPL-MIT Lon TRO1 JPL-MIT Lon MDVO JPL-NCL
Lon MAS1 MIT-NCL Lon BOGT MIT-NCL Lon MALI MIT-NCL
Hgt CAS1 JPL-MIT Hgt JPLM JPL-MIT Hgt NTUS JPL-MIT
Hgt RCM6 JPL-MIT Hgt COCO JPL-MIT Hgt MDVO JPL-MIT
Hgt MDVO JPL-NCL
113 GLOBAL STATIONS:
ALBH ALGO AMCT AREQ ASC1 AUCK BAHR BAKO BARB BOGO
BOR1 BRMU BRUS CAGL CASA CHAT CHUR CRO1 DAV1 DRAO
DUBO EBRE EISL ELAT FAIR GILB GLSV GODE GOL2 GOLD
GOPE GRAS GRAZ GUAM HERS HOFN HOLB IRKT JOZE KABR
KATZ KELY KERG KIRU KIT3 KOKB KOSG KOUR KSTU LAMA
LHAS MAD2 MADR MAG0 MATE MAW1 MCM4 MDO1 MEDI METS
MKEA NANO NICO NLIB NOTO NOUM NRC1 NSSP NYA1 NYAL
OBER ONSA PENC PETR PIE1 POL2 POTS PRDS QUIN RAMO
RICH SANT SCH2 SHAO SJDV SOL1 STJO SUWN TAEJ TELA
THTI THU1 TOUL TSKB UCLU UPAD USNA USNO USUD VILL
WES2 WHIT WILL WSLR WSRT WTZR WUHN XIAN YAKA YELL
ZECK ZIMM ZWEN
43 FIDUCIAL STATIONS:
ALGO AREQ BRMU DAV1 DRAO FAIR FORT GODE GOL2 GRAZ
GUAM IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1
MAD2 MALI MAS1 MATE MDO1 NLIB NYAL OHIG ONSA PERT
PIE1 POTS SANT SHAO THU1 TID2 TSKB VILL WES2 WTZR
YAR1 YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
113 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.6 0.8 2.2 4.1 4.3 4.4
Lon 1.5 0.7 1.7 5.2 6.5 5.5
Hgt 4.3 2.7 4.2 10.4 12.4 11.9
3D 4.8 2.9 5.1 12.3 14.7 13.9
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
129 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.642 0.225 0.363 3.191 3.724 2.994
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 -6.0 2.2 -14.1 2.2 -10.1 2.9 0.4 0.1
MIT -5.4 2.5 -5.8 2.5 -4.1 3.9 -0.6 0.2
NCL -4.3 3.1 -11.5 3.2 -7.4 4.4 0.2 0.2
REMARKS:
STATION NAME/POINT CODES CHANGED IN ncl0975g.snx
ENFORCED FROM TEMPLATE FILE igs.snx at cddis.gsfc.nasa.gov.
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
STATION NAME/POINT CODES CHANGED IN mit0975g.snx
ENFORCED FROM TEMPLATE FILE igs.snx at cddis.gsfc.nasa.gov.
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
3 Changes in all.
STATION NAME/POINT CODES CHANGED IN jpl0975g.snx
ENFORCED FROM TEMPLATE FILE igs.snx at cddis.gsfc.nasa.gov.
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0975g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0975g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0975g.snx :
Stations: BRAZ HART MAD2
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
10317M003 NYA1 A NYAL B
40499S020 RCM6 A RICH A RCM6 A
RICH A RCM6 A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A BISH 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:
-----------------------------
BAKO 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:
cod09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09757.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09757.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
============= ====== ====== ====== ====== ====== ====== ======
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 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
40499S020 RICH A RCM6 A RCM6 A RCM6 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
42005M001 GALA A GALA A GALA A GALA B GALA A
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
10302M006 TROM A TRO1 A
22601M001 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:
-----------------------------
BISH A 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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