[IGSREPORT-5652] Wk 0979 G-SINEX Comparisons
NRCan
NRCan
Tue Jan 12 07:53:25 PST 1999
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IGS Electronic Report Tue Jan 12 7:53:25 PST 1999 Message Number 5652
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Author: NRCan GSDivision
Subject: Wk 0979 G-SINEX Comparisons
Subject: Wk 0979 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0979
(OCT 11, 1998 - OCT 17, 1998)
Contacts: 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:
jpl0979g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0979g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0979g.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))
jpl0979g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0979g.snx: INEG .081 .000 -.001 .078 -.002 .004 .066 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0979g.snx: HOFN .075 .002 -.001 .069 -.001 .002 .055 .000 .000
mit0979g.snx: HOFN .075 .002 -.001 .069 -.001 .002 .055 .000 .000
- Both wrong. Should be L1/L2 offset 0.0625 M., eccentricity 0.055 M.
Information for its antenna, TRIMBLE TR GEOD L1/L2 GP, not listed in igs.snx.
jpl0979g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0979g.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.
jpl0979g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
ncl0979g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
- Both wrong. Should be L1/L2 offset, eccentricity 0.078, 0.096, 2.475 M. respectively.
mit0979g.snx: CAGL .110 .000 .000 .128 .000 .000 .010 .000 .000
jpl0979g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
mit0979g.snx: LAMA .081 .000 -.001 .078 -.002 .004 .061 .000 .000
jpl0979g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0979g.snx: NOUM .075 .002 -.001 .069 -.001 .002 .000 .000 .000
FILE ncl0979g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0979g.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 mit0979g.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 MCM4 65.5 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 MCM4 67.8 mm.
Hgt HOB2 114.1 mm.
THE FOLLOWING STATIONS WERE DELETED FROM JPL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt MCM4 63.0 mm.
Hgt HOB2 114.9 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat MAC1 JPL-MIT Lat COCO JPL-MIT Lat TID2 JPL-MIT
Lat MAC1 JPL-NCL Lat TID2 JPL-NCL Lon MDVO JPL-MIT
Lon CAS1 JPL-MIT Lon BOGT JPL-MIT Lon NTUS JPL-MIT
Lon AREQ JPL-NCL Lon MAS1 JPL-NCL Lon CHAT JPL-NCL
Lon NTUS JPL-NCL Lon CAS1 JPL-NCL Lon BOGT JPL-NCL
Hgt COCO JPL-MIT Hgt MDVO JPL-MIT Hgt DGAR JPL-NCL
Hgt COCO JPL-NCL Hgt WUHN MIT-NCL
127 GLOBAL STATIONS:
ALBH ALGO ALIC AMCT ANKR AOML ASC1 AUCK BAHR BAKO
BISH BOGO BOR1 BRMU BRUS CASA CEDU CHUR CRO1 DARW
DAV1 DRAO DUBO EISL ELAT FAIR FLIN FORT GILB GLSV
GODE GOL2 GOLD GOPE GOUG GRAS GRAZ GUAM HARK HERS
HOLB HRAO IRKT JOZE JPLM KABR KARR KATZ KELY KERG
KIRU KIT3 KOKB KOSG KOUR KSTU KWJ1 LHAS LPGS MAD2
MADR MAG0 MALI MATE MAW1 MDO1 MEDI METS MKEA NANO
NICO NLIB NOTO NRC1 NSSP NYA1 NYAL OBER OHIG ONSA
PENC PERT PIE1 POL2 POTS PRDS QUIN RAMO RIOG SANT
SCH2 SELE SHAO SJDV SOL1 STJO SUWN TAEJ TELA THU1
TIDB TOUL TOW2 TRO1 TSKB UCLU UPAD URUM USNA USNO
USUD VESL VILL WES2 WHIT WILL WSLR WSRT WTZR XIAN
YAKA YAKZ YAR1 YELL ZECK ZIMM ZWEN
44 FIDUCIAL STATIONS:
ALGO AREQ BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE
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 TIDB TSKB VILL WES2
WTZR YAR1 YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
127 GLOBAL STATIONS 44 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 0.9 0.9 0.5 5.7 5.8 5.9
Lon 0.6 0.9 0.8 5.7 5.4 5.6
Hgt 2.1 2.6 1.9 10.3 12.9 12.7
3D 2.4 2.9 2.1 13.0 15.1 15.1
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
138 GLOBAL STATIONS 44 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.134 0.120 0.095 5.075 7.729 4.989
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 -3.9 1.2 -2.7 1.2 -1.5 3.4 -0.5 0.1
MIT -2.1 1.8 -9.1 1.8 -10.1 2.5 -0.6 0.1
NCL 0.8 3.1 -9.9 3.1 -6.1 4.5 -0.6 0.1
REMARKS:
MULTIPLY-USED 4-LETTER STATION NAME CODES:
GALA A 42005M001
GALA B 42005M001
IISC A 22306M002
IISC B 22306M002
TROM B 10302M006
TROM A 10302M003
NYAL B 10317M003
NYAL A 10317M001
STATION NAME/POINT CODES CHANGED IN mit0979g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
2 Changes in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0979g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0979g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0979g.snx :
Stations: BRAZ HART HOB2 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
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B
12353M001 YAKA A YAKA A
YAKZ A YAKZ A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A BISH A DARW A ELAT A GILB A INEG 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 INEG A BAKO A URUM A BISH A KATZ A GILB A KABR A ELAT A TELA A
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN ABBREVIATED .ssc FILES:
cod09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09797.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09797.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
============= ====== ====== ====== ====== ====== ====== ======
50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
31303M002 MASP A MASP B MASP B MAS1 A MASP B MAS1 A
12353M001 YAKZ A YAKA A YAKZ A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ 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
50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TID2 A
22601M001 NTUS A NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
42005M001 GALA A GALA A GALA A GALA B GALA 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:
-----------------------------
INEG A BAKO A KATZ A GILB A KABR A ELAT A TELA 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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