[IGSREPORT-5367] Wk 0972 G-SINEX Comparisons
AC
AC
Wed Sep 30 06:55:30 PDT 1998
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IGS Electronic Report Wed Sep 30 6:55:30 PDT 1998 Message Number 5367
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0972 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0972
(AUG 23, 1998 - AUG 29, 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
ZZ 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:
jpl0972g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0972g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0972g.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))
jpl0972g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
ncl0972g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0972g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0972g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
FILE ncl0972g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0972g.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 mit0972g.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: 30 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
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 -56.8 mm.
Lat KERG -52.1 mm.
Lat MALI -42.0 mm.
Lon OHIG -36.2 mm.
Lon TIDB 32.4 mm.
Lon HOB2 36.0 mm.
Lon MAC1 49.6 mm.
Hgt HOB2 102.3 mm.
Lon HART 240.6 mm.*
Lat HART 646.0 mm.*
*Proper offset may not have been used:
30302M002 to 30302M007 dx/dy/dz: -.145m., -.374m., -.623m.
THE FOLLOWING STATIONS WERE DELETED FROM NCL
DUE TO DIFFERENCES IN EXCESS OF 30 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 76.9 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat DGAR JPL-MIT Lat NTUS JPL-MIT Lat TOW2 JPL-MIT
Lat DARW JPL-MIT Lat ALIC JPL-MIT Lat CEDU JPL-MIT
Lat KARR JPL-MIT Lat COCO JPL-MIT Lat YAR1 JPL-MIT
Lat PERT JPL-MIT Lat MAW1 JPL-MIT Lat CAS1 JPL-MIT
Lat PERT JPL-NCL Lat CAS1 JPL-NCL Lon THTI JPL-MIT
Lon NTUS JPL-MIT Lon MCM4 JPL-MIT Lon AUCK JPL-MIT
Lon DARW JPL-MIT Lon NOUM JPL-MIT Lon CHAT JPL-MIT
Lon COCO JPL-MIT Lon NTUS JPL-NCL Lon MCM4 JPL-NCL
Lon THTI JPL-NCL Hgt MDVO JPL-MIT Hgt MDVO MIT-NCL
Hgt THTI JPL-MIT Hgt NTUS JPL-MIT Hgt COCO JPL-MIT
Hgt MDVO JPL-MIT Hgt MDVO MIT-NCL Hgt COCO MIT-NCL
125 GLOBAL STATIONS:
ALBH ALGO AMCT ANKR AOML AREQ ASC1 BAHR BAKO BOGO
BOGT BOR1 BRMU BRUS CAGL CASA CHUR CRO1 DAV1 DRAO
DUBO EBRE EISL ELAT FAIR FLIN FORT GILB GLSV GODE
GOL2 GOLD GOPE GRAS GRAZ GUAM HARK HERS HOFN HOLB
IRKT JOZE JPLM KABR KATZ KELY KERG KIRU KIT3 KOKB
KOSG KOUR KSTU KWJ1 LAMA LHAS LPGS MAC1 MAD2 MADR
MAG0 MALI MAS1 MATE MDO1 MEDI METS MKEA NANO NICO
NLIB NOTO NRC1 NYA1 OBER OHIG ONSA PENC PETR PIE1
POL2 POTS PRDS QUIN RAMO RCM6 REYK RIOG SANT SCH2
SELE SHAO SJDV SOL1 STJO SUWN TAEJ TELA THU1 TID2
TIDB TOUL TRO1 TSKB UCLU UPAD URUM USNA USNO USUD
VILL WES2 WHIT WILL WSLR WSRT WTZR WUHN XIAN YAKA
YAKZ YELL ZECK ZIMM ZWEN
40 FIDUCIAL STATIONS:
ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
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 ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
125 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.2 1.4 1.0 3.8 4.2 4.8
Lon 1.3 1.3 0.9 4.8 6.1 6.4
Hgt 2.8 2.4 3.0 10.7 10.7 10.2
3D 3.3 3.1 3.3 12.3 13.0 13.0
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
134 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.448 0.281 0.214 3.154 3.685 2.903
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 6.1 2.4 -13.9 2.5 -16.6 3.3 0.3 0.2
MIT 3.6 2.0 -3.6 2.0 -22.4 2.9 -0.4 0.1
NCL 6.1 2.9 -8.8 3.0 -15.5 3.9 0.0 0.2
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0972g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0972g.snx :
Stations: BRAZ MASP
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0972g.snx :
Stations: BRAZ HART MADR MASP
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
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:
cod09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09727.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09727.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
============= ====== ====== ====== ====== ====== ====== ======
22601M001 NTUS A NTUS A NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
30302M007 HART A HARK A 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 A 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
12353M001 YAKZ A YAKA A YAKZ A
YAKZ A YAKA A
50107M004 YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
42005M001 GALA A GALA A GALA A GALA B GALA A
13407S012 MADR A MAD2 A MADR A MAD2 A
22306M002 IISC B IISC A IISC A IISC B IISC 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 at geod.emr.ca
[Mailed From: David Hutchison <hutch at geod.nrcan.gc.ca>]
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