[IGSREPORT-5651] Wk 0978 G-SINEX Comparisons
NRCan
NRCan
Tue Jan 12 07:51:47 PST 1999
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IGS Electronic Report Tue Jan 12 7:51:47 PST 1999 Message Number 5651
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Author: NRCan GSDivision
Subject: Wk 0978 G-SINEX Comparisons
Subject: Wk 0978 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0978
(OCT 4, 1998 - OCT 10, 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:
jpl0978g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0978g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0978g.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))
jpl0978g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0978g.snx: INEG .081 .000 -.001 .078 -.002 .004 .066 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0978g.snx: HOFN .075 .002 -.001 .069 -.001 .002 .055 .000 .000
mit0978g.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.
Antenna information for its antenna, TRIMBLE TR GEOD L1/L2 GP, not listed in
igs.snx.
jpl0978g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0978g.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.
jpl0978g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
ncl0978g.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.
mit0978g.snx: CAGL .110 .000 .000 .128 .000 .000 .010 .000 .000
jpl0978g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
mit0978g.snx: LAMA .081 .000 -.001 .078 -.002 .004 .061 .000 .000
jpl0978g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0978g.snx: NOUM .075 .002 -.001 .069 -.001 .002 .000 .000 .000
FILE ncl0978g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0978g.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 mit0978g.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 61.2 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 66.3 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 63.4 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat ASC1 JPL-MIT Lat TID2 JPL-MIT Lat ASC1 JPL-NCL
Lat MAC1 JPL-NCL Lat TID2 JPL-NCL Lat CAS1 JPL-NCL
Lon TRO1 JPL-MIT Lon MDVO JPL-MIT Lon LPGS JPL-NCL
Lon ASC1 JPL-NCL Lon KWJ1 JPL-NCL Lon AREQ JPL-NCL
Lon MDVO JPL-NCL Hgt THU1 JPL-MIT Hgt MDVO JPL-MIT
Hgt COCO JPL-MIT Hgt BOR1 JPL-NCL Hgt ASC1 JPL-NCL
Hgt MDVO JPL-NCL Hgt COCO JPL-NCL Hgt BOR1 MIT-NCL
128 GLOBAL STATIONS:
ALBH ALGO ALIC AMCT ANKR AOML AUCK BAHR BAKO BISH
BOGO BOGT BRMU BRUS CASA CEDU CHAT CHUR CRO1 DARW
DAV1 DGAR DRAO DUBO EISL ELAT FAIR FLIN FORT GILB
GLSV GODE GOL2 GOLD GOPE GOUG GRAS GRAZ GUAM HARK
HERS HOB2 HOLB HRAO IAVH IRKT JAB1 JOZE JPLM KABR
KARR KATZ KELY KERG KIRU KIT3 KOKB KOSG KOUR LHAS
MAD2 MADR MAG0 MALI MAS1 MATE MAW1 MDO1 MEDI METS
MKEA NANO NICO NLIB NOTO NRC1 NSSP NTUS NYA1 NYAL
OBER OHIG ONSA PENC PERT PETR PIE1 POL2 POTS PRDS
QUIN RIOG SANT SCH2 SELE SHAO SJDV SOL1 STJO SUWN
TAEJ TELA TIDB TOUL TOW2 TSKB UCLU UPAD URUM USNA
USNO USUD VESL VILL WES2 WHIT WILL WSLR WSRT WTZR
WUHN XIAN YAKA YAR1 YELL ZECK ZIMM ZWEN
45 FIDUCIAL STATIONS:
ALGO AREQ BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE
GRAZ GUAM HOB2 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:
128 GLOBAL STATIONS 45 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 0.6 0.8 0.7 6.3 6.3 5.8
Lon 0.9 1.3 0.8 7.3 7.1 6.9
Hgt 2.3 2.9 2.6 12.5 14.3 14.0
3D 2.5 3.2 2.8 15.7 17.1 16.7
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
138 GLOBAL STATIONS 45 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.193 0.171 0.168 4.840 7.584 4.788
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 -6.5 1.3 1.2 1.3 -7.2 3.5 -0.7 0.1
MIT -3.8 1.8 -3.5 1.8 -12.5 2.5 -0.9 0.1
NCL -4.5 3.1 -3.8 3.2 -10.6 4.5 -0.8 0.1
REMARKS:
STATION NAME/POINT CODES CHANGED IN ncl0978g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
MULTIPLY-USED 4-LETTER STATION NAME CODES in mit0978g.snx:
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 mit0978g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
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 jpl0978g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
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 jpl0978g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0978g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0978g.snx :
Stations: BRAZ HART HOB2 MAD2 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 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
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 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:
cod09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09787.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09787.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
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
10302M006 TROM A TRO1 A
10302M003 TROM A TROM A TROM 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 YAR1 A YAR2 A YAR1 A YAR1 A YAR1 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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