[IGSREPORT-5440] Wk 0976 G-SINEX Comparisons
AC
AC
Fri Oct 23 06:27:56 PDT 1998
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IGS Electronic Report Fri Oct 23 6:27:56 PDT 1998 Message Number 5440
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0976 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0976
(SEP 20, 1998 - SEP 26, 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:
jpl0976g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0976g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0976g.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))
mit0976g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
ncl0976g.snx: SUTH .110 .000 .000 .128 .000 .000 .119 .000 .000
- Both wrong. Should be L1/L2 offset. eccentricity 0.110, 0.128, 0.119 M. respectively.
jpl0976g.snx: TAHI .110 .000 .000 .128 .000 .000 1.055 .000 .000
mit0976g.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 call sign for 92201M009 should be THTI.
jpl0976g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
ncl0976g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0976g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0976g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0976g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
FILE ncl0976g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0976g.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 mit0976g.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 MIT
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 145.3 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 HOB2 149.8 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat YAR1 JPL-MIT Lat TIDB JPL-MIT Lat MAC1 JPL-MIT
Lat TID2 JPL-MIT Lat TIDB MIT-NCL Lat ASC1 MIT-NCL
Lat YAR1 MIT-NCL Lat PERT MIT-NCL Lat OHIG MIT-NCL
Lon ASC1 JPL-MIT Lon KWJ1 JPL-MIT Lon MALI JPL-MIT
Lon RCM6 JPL-MIT Lon CHAT JPL-MIT Lon MAS1 JPL-MIT
Lon HARK JPL-MIT Lon AUCK JPL-MIT Lon CAS1 JPL-MIT
Lon YAKA MIT-NCL Lon AUCK MIT-NCL Lon KWJ1 MIT-NCL
Lon CHAT MIT-NCL Lon ASC1 MIT-NCL Lon MAS1 MIT-NCL
Hgt THU1 JPL-MIT Hgt MAW1 JPL-MIT Hgt NTUS JPL-MIT
Hgt COCO JPL-MIT Hgt MDVO JPL-MIT Hgt MDVO JPL-NCL
Hgt COCO MIT-NCL
121 GLOBAL STATIONS:
ALBH ALGO ALIC AMCT ANKR AREQ BAHR BAKO BARB BOGO
BOGT BOR1 BRMU BRUS CAGL CEDU CHUR CRO1 DAV1 DGAR
DRAO DUBO EISL ELAT FAIR FLIN FORT GILB GLSV GODE
GOL2 GOLD GOPE GOUG GRAS GRAZ GUAM HERS HOFN HOLB
IAVH IRKT JOZE JPLM KABR KARR KATZ KELY KERG KIRU
KIT3 KOKB KOSG KOUR KSTU LAMA LHAS LPGS MAD2 MADR
MAG0 MATE 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 SELE
SHAO SJDV SOL1 STJO SUWN TAEJ TELA THTI TOUL TOW2
TRO1 TSKB UCLU UPAD USNA USNO USUD VILL WES2 WHIT
WILL WSLR WSRT WTZR WUHN XIAN YAKZ 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:
121 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.8 1.0 2.5 5.4 4.8 5.8
Lon 1.2 0.9 1.2 5.5 6.4 5.9
Hgt 4.1 2.5 4.8 10.4 12.4 11.6
3D 4.6 2.8 5.6 12.9 14.8 14.2
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
133 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.438 0.128 0.447 3.172 3.868 2.974
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 -5.4 2.7 -12.1 2.7 -15.7 3.6 0.1 0.2
MIT -6.1 2.2 -5.3 2.2 -7.5 3.4 -1.0 0.1
NCL -3.8 3.2 -8.2 3.3 -15.9 4.6 0.1 0.2
REMARKS:
STATION NAME/POINT CODES CHANGED IN ncl0976g.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.
STATION NAME/POINT CODES CHANGED IN mit0976g.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 jpl0976g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0976g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0976g.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 MDVO A
MDV1 A
12309M001 MDVO A
22601M001 NTUS A NTUS A
22601M002 NTUS A
10317M003 NYA1 A NYAL B
40499S020 RCM6 A RICH A RCM6 A
RICH A RCM6 A
92201M006 TAHI A
92201M009 THTI A TAHI A
THTI A
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 YAKZ A
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
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN ABBREVIATED .ssc FILES:
cod09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09767.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09767.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 MAS1 A MASP B MAS1 A
42005M001 GALA A GALA A GALA A GALA B GALA A
12309M002 MDVO A MDVO B MDVO A MDVO A
12353M001 YAKZ A YAKA A YAKZ A
YAKZ 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
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
92201M009 TAHI A THTI A
10302M006 TROM A TRO1 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
--
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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