[IGSREPORT-5320] Wk 0969 G-SINEX Comparisons
AC
AC
Tue Sep 15 12:22:59 PDT 1998
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IGS Electronic Report Tue Sep 15 12:22:59 PDT 1998 Message Number 5320
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0969 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0969
(AUG 2, 1998 - AUG 8, 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 stations not present in all GNAAC combined SINEX files were de-
leted from all three combined solutions. Every solution was then sub-
jected to a 7-parameter transformation into a common reference system
(the 47 ITRF96 station positions).
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:
jpl0969g.snx at cddis.gsfc.nasa.gov
mit0969g.snx at cddis.gsfc.nasa.gov
ncl0969g.snx at cddis.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))
jpl0969g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0969g.snx: INEG .080 .000 .001 .079 -.001 .001 .066 .000 .000
- Unresolvable. No log file.
jpl0969g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0969g.snx: MDVO .078 .000 -.003 .074 -.003 -.001 .146 .000 .000
- Latest log file indicates L1/L2 offset should be 0.0692 M.
(Antenna not listed in igs.snx.)
jpl0969g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0969g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
- Both wrong. L1/L2 offset, eccentricity should be 0.110, 0.128, 0.119 M. respectively.
jpl0969g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
ncl0969g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0969g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0969g.snx: NYAL .000 .000 .000 .000 .000 .000 5.216 .000 .000
FILE ncl0969g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0969g.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 mit0969g.snx
GALA Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: GALA
CONFIDENCE LEVEL FOR OUTLIER DETECTION (ITRF96): 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat MAS1 JPL-MIT Lat KERG JPL-MIT Lat KOKB MIT-NCL
Lon LHAS JPL-MIT Lon IRKT JPL-MIT Lon IRKT JPL-NCL
Lon LHAS MIT-NCL Lon MAS1 MIT-NCL Lon KOUR MIT-NCL
Hgt BAHR JPL-MIT Hgt KWJ1 JPL-MIT Hgt KWJ1 MIT-NCL
Hgt WUHN MIT-NCL Hgt OHIG MIT-NCL
73 GLOBAL STATIONS:
ALBH ALGO ANKR AREQ ASC1 AUCK BARB BOGT BRMU CAS1
CHAT COCO CRO1 DAV1 DGAR DRAO EISL FAIR FORT GODE
GOL2 GOLD GRAZ GUAM HARK HOB2 IISC KELY KIRU KIT3
KOSG KSTU LPGS MAC1 MALI MATE MCM4 MDO1 METS MKEA
NLIB NOUM NRC1 NTUS ONSA PERT PIE1 POL2 POTS RCM6
REYK SANT SELE SHAO STJO TAEJ THU1 TID2 TIDB TSKB
USNO USUD VILL WES2 WHIT WSRT WTZR XIAN YAKZ YAR1
YELL ZECK ZWEN
40 FIDUCIAL STATIONS:
ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
HOB2 IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1
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:
73 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.0 0.6 1.0 4.5 4.3 4.4
Lon 0.9 0.7 0.9 6.0 5.6 5.8
Hgt 2.2 1.4 2.2 11.2 11.4 10.8
3D 2.6 1.7 2.6 13.5 13.4 13.0
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
80 GLOBAL STATIONS 40 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.181 0.050 0.165 2.434 3.093 2.245
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 2.7 9.3 2.8 -30.9 4.8 -0.8 0.2
MIT 5.2 2.0 9.5 2.0 -25.4 3.3 -1.2 0.1
NCL 6.5 3.0 9.1 3.1 -27.0 4.9 -0.7 0.2
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0969g.snx :
Stations: BRAZ TROM
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0969g.snx :
Stations: BRAZ MASP TROM
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0969g.snx :
Stations: BRAZ HART MADR MASP TROM
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
40451M123 GODE A GODE A GODE A
40451S003 USNO A USNO A USNO A
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
30302M004 HRAO A HRAO A HRAO A
22306M002 IISC A IISC A IISC A
IIS1 A
13407S012 MAD2 A MAD2 A
MADR A MADR A
31303M002 MAS1 A MAS1 A
MASP A
31303M001 MAS1 A
12309M002 MDVO A
12309M001 MDVO A
10317M003 NYA1 A NYA1 A
10317M001 NYAL A NYAL A NYAL A
40499S020 RCM6 A RCM6 A RCM6 A
RICH A RICH A
50103M108 TID2 A TID2 A TID2 A
TIDB A TIDB 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 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
RAMO A
IERS DOMES NO COD NRCan ESA GFZ JPL NGS SIO
============= ====== ====== ====== ====== ====== ====== ======
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
40451M123 GODE A GODE A GODE A
40451S003 USNO A USNO A USNO A USNO A USNO 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
42005M001 GALA A GALA A GALA A GALA B
50103M108 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
30302M004 HRAO A HRAO A HRAO A
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
10302M006 TROM A TRO1 A
10317M001 NYAL A NYAL A NYAL A NYAL A
10317M003 NYA1 A NYA1 A
13407S012 MADR A MAD2 A MADR A MAD2 A
22601M001 NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
22306M002 IISC B IISC A IISC A IISC 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 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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