[IGSREPORT-5013] Wk 0955 G-SINEX Comparisons
AC
AC
Tue Jun 16 09:42:54 PDT 1998
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IGS Electronic Report Tue Jun 16 9:42:54 PDT 1998 Message Number 5013
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0955 G-SINEX Comparisons
Subject: Wk 0955 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0955
(APR 26, 1998 - MAY 2, 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:
mit0955g.snx at cddis.gsfc.nasa.gov
jpl0955g.snx at cddis.gsfc.nasa.gov
ncl0955g.snx at cddis.gsfc.nasa.gov
GNAACs: MIT JPL NCL
STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))
jpl0955g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0955g.snx: BARB .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0955g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable (no log file)
mit0955g.snx: HRAO .110 .000 .000 .128 .000 .000 .083 .000 .000
ncl0955g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
- Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .081 M.
jpl0955g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0955g.snx: INEG .080 .000 .001 .079 -.001 .001 .130 .000 .000
- Unresolvable (no log file)
jpl0955g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0955g.snx: MDVO .078 .000 -.003 .074 -.003 -.001 .146 .000 .000
ncl0955g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
- All 3 wrong. Should be L1/L2 offset both .069 M., eccentricity .146 M.
jpl0955g.snx: NOUM .110 .000 .000 .128 .000 .000 .000 .000 .000
mit0955g.snx: NOUM .078 .000 -.003 .074 -.003 -.001 -.002 -.005 .006
- Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 0.000 M.
jpl0955g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
mit0955g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
- Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 2.369 M.
mit0955g.snx: CAGL .110 .000 .000 .128 .000 .000 .010 .000 .000
mit0955g.snx: HFLK .078 .000 .000 .096 .000 .000 .011 .000 .000
jpl0955g.snx: KOUR .110 .000 .000 .128 .000 .000 .045 .000 .000
jpl0955g.snx: MEDI .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0955g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0955g.snx: NYA1 .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0955g.snx: SFER .075 .002 -.001 .069 -.001 .002 1.626 .000 .000
mit0955g.snx: SUTH .110 .000 .000 .128 .000 .000 .085 .000 .000
FILE ncl0955g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0955g.snx
(MODEL / SER. NO. / L1 (UNE) / L2 (UNE))
(UNE = Up North East (metres))
DORNE MARGOLIN B ----- .078 .000 .000 .096 .000 .000 (Correct)
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 mit0955g.snx
GALA Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: GALA
ncl0955g.snx: MISSING BLOCKS SITE/ANTENNA,
SITE/GPS_PHASE_CENTER & SITE/ECCENTRICITY
CONFIDENCE LEVEL FOR OUTLIER DETECTION (ITRF96): 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat AREQ MIT-JPL Lat BOGT MIT-JPL Lat DAV1 MIT-JPL
Lon BOGT JPL-NCL Lon HOB2 JPL-NCL Lon AREQ JPL-NCL
Lon TIDB JPL-NCL Lon NRC1 MIT-JPL Lon TIDB MIT-JPL
Lon AREQ MIT-JPL Lon FORT MIT-JPL Lon HOB2 MIT-JPL
Lon BOGT MIT-JPL Lon NRC1 MIT-NCL Hgt TROM MIT-JPL
Hgt TROM MIT-NCL
69 GLOBAL STATIONS:
ALBH ALGO ANKR ASC1 AUCK BAHR BRMU CAS1 CHAT COCO
CRO1 DGAR DRAO EISL FAIR GODE GOLD GRAZ GUAM HARK
IRKT KELY KERG KIRU KIT3 KOKB KOSG KSTU KWJ1 LHAS
LPGS MAC1 MADR MALI MATE MCM4 MDO1 METS MKEA NICO
NLIB OHIG ONSA PERT PETR PIE1 POL2 POTS RCM6 REYK
SANT SELE SHAO STJO TAEJ THU1 TSKB USNO USUD VILL
WES2 WHIT WSRT WTZR WUHN YAR1 YELL ZECK ZWEN
41 FIDUCIAL STATIONS:
ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
HOB2 IRKT KERG KIT3 KOKB KOSG KWJ1 LHAS MAC1 MADR
MALI MATE MDO1 NLIB OHIG ONSA PERT PIE1 POTS SANT
SHAO THU1 TIDB TROM TSKB VILL WES2 WTZR YAR1 YELL
ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
69 GLOBAL STATIONS 41 FIDUCIAL STATIONS
MIT-JPL MIT-NCL JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.4 0.9 0.9 5.0 5.3 5.2
Lon 0.9 0.8 0.9 6.2 6.9 6.4
Hgt 2.7 2.9 1.7 15.7 10.8 10.5
3D 3.1 3.1 2.1 17.6 13.9 13.4
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
73 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-NCL MIT-JPL MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.087 0.159 0.096 2.981 4.227 2.928
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 2.9 21.0 2.9 -24.8 4.5 -0.7 0.1
MIT -3.6 2.8 12.5 2.9 -16.3 4.3 -0.8 0.2
NCL -2.5 3.0 16.3 3.2 -15.4 4.7 -0.5 0.2
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0955g.snx :
Stations: BRAZ MASP
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0955g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0955g.snx :
Stations: BRAZ HART MASP
IERS DOMES NO IGS 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
40405S031 GOL2 A GOL2 A GOLD A
GOLD A GOLD A
GOL1 A
30302M007 HARK A HART B HARK A
HART A
HAR1 A
30302M004 HRAO A HRAO A HRAO A
13407S012 MAD2 A MADR A MADR A
MADR A
31303M002 MAS1 A
MASP A
31303M001 MAS1 A
12309M002 MDVO A MDVO A
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYA1 A
10317M001 NYAL A NYAL A NYAL A
40499S020 RCM6 A RICH A RCM6 A
RICH A
50103M108 TID2 A TIDB A TIDB A
TIDB A TID2 A
10302M006 TRO1 A TRO1 A
10302M003 TROM A TROM A TROM A
12353M001 YAKA A
YAKZ A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT IGS:
-----------------------------
BAKO A BISH A ELAT A INEG A KATZ A RIOG A TELA A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
MAD2 A SFER A ASC1 A HOFN A LPGS A CRO1 A SCH2 A RIOG A NRC1 A SOL1 A
USNA A USNO A AOML A RCM6 A CHUR A DUBO A FLIN A INEG A PRDS A WILL A
WSLR A NANO A UCLU A HOLB A WHIT A MKEA A KWJ1 A NOUM A PETR A MAG0 A
YAKZ A YAKA A SUWN A WUHN A BAKO A COCO A KSTU A SELE A BISH A DGAR A
BAHR A NSSP A ZECK A KATZ A ELAT A TELA A NICO A HARK A NOTO A MEDI A
HFLK A OBER A CAGL A WSRT A TOUL A EBRE A
IERS DOMES NO COD NRC ESA GFZ JPL NOA SIO
============= ====== ====== ====== ====== ====== ====== ======
30302M004 HRAO A HRAO A
30302M007 HART A HART B HART B HARK A HART B
30302M002 HART B HARK A
HRAO A
31303M002 MASP A MASP B MASP B MAS1 A MASP B
31303M001 MASP A
12309M002 MDVO A MDVO B
12309M001 MDVO A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOLD A
40451S003 USNO A USNO A USNO A
40451M123 GODE A GODE A GODE 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 TIDB A
50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
42005M001 GALA A GALA A GALA B
10317M003 NYAL A NYA1 A
10317M001 NYAL A NYAL A NYAL A NYAL A NYAL A
NYA1 A
10302M006 TROM A TRO1 A
10302M003 TROM A TROM A TROM A
13407S012 MADR A MAD2 A MADR A MADR A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A RIOG A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ASC1 A BAHR A COCO A DGAR A SUTH A KWJ1 A MAG0 A MKEA A NOUM A PETR A
LPGS A NICO A GALA A SFER A ZECK A SELE A USNO A YAKZ A
MISSING IERS DOMES NOS AT SIO:
-----------------------------
MAD2 A SFER A ASC1 A HOFN A LPGS A CRO1 A SCH2 A NRC1 A SOL1 A USNA A
USNO A AOML A RCM6 A CHUR A DUBO A FLIN A INEG A PRDS A WILL A WSLR A
NANO A UCLU A HOLB A WHIT A MKEA A KWJ1 A NOUM A PETR A MAG0 A YAKA A
YAKZ A SUWN A WUHN A BAKO A COCO A KSTU A SELE A DGAR A BAHR A NSSP A
ZECK A KATZ A ELAT A TELA A NICO A HARK A NOTO A MEDI A HFLK A OBER A
CAGL A WSRT A TOUL A EBRE A
--
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: hutch at geod.emr.ca
[Mailed From: David Hutchison <hutch at geod.emr.ca>]
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