[IGSREPORT-3635] G-SNX Report for GPS Wk 896
AC
AC
Sun Apr 13 10:51:53 PDT 1997
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IGS Electronic Report Sun Apr 13 10:51:53 PDT 1997 Message Number 3635
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Author: AC Coordinator / NRCan GSDivision
Subject: G-SNX Report for GPS Wk 896
Subject: Wk 0896 G-SNX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0896
(MAR 9, 1997 - MAR 15, 1997)
Contacts: J. Kouba (kouba at geod.emr.ca)
D. Hutchison(hutch 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 13 ITRF94 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:
mit0896g.snx at cddis.gsfc.nasa.gov
jpl0896g.snx at cddis.gsfc.nasa.gov
ncl0896g.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))
jpl0896g.snx: ANKR .110 .000 .000 .128 .000 .000 .000 .000 .000
mit0896g.snx: ANKR .110 .000 .000 .128 .000 .000 .060 .000 .000
ncl0896g.snx: ANKR .110 .000 .000 .128 .000 .000 .060 .000 .000
jpl0896g.snx: BAHR .000 .000 .000 .000 .000 .000 3.122 .000 .000
mit0896g.snx: BAHR .110 .000 .000 .128 .000 .000 3.122 .000 .000
ncl0896g.snx: BAHR .110 .000 .000 .128 .000 .000 3.122 .000 .000
jpl0896g.snx: DRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
mit0896g.snx: DRAO .110 .000 .000 .128 .000 .000 .100 .000 .000
ncl0896g.snx: DRAO .110 .000 .000 .128 .000 .000 .100 .000 .000
jpl0896g.snx: GOPE .070 .000 .000 .068 .000 .000 .046 .000 .000
mit0896g.snx: GOPE .078 .000 -.003 .074 -.003 -.001 .046 .000 .000
jpl0896g.snx: JOZE .070 .000 .000 .068 .000 .000 .198 .000 .000
mit0896g.snx: JOZE .078 .000 -.003 .074 -.003 -.001 .198 .000 .000
jpl0896g.snx: MOIN .110 .000 .000 .128 .000 .000 -.103 .000 .000
mit0896g.snx: MOIN .110 .000 .000 .128 .000 .000 .994 .000 .000
jpl0896g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0896g.snx: MONP .110 .000 .000 .128 .000 .000 .119 .000 .000
jpl0896g.snx: TAEJ .000 .000 .000 .000 .000 .000 .660 .000 .000
mit0896g.snx: TAEJ .075 .002 -.001 .069 -.001 .002 .660 .000 .000
ncl0896g.snx: TAEJ .078 .000 -.003 .074 -.003 -.001 .660 .000 .000
jpl0896g.snx: UPAD .070 .000 .000 .068 .000 .000 1.962 .000 .000
mit0896g.snx: UPAD .078 .000 -.003 .074 -.003 -.001 1.962 .000 .000
jpl0896g.snx: UPO1 .110 .000 .000 .128 .000 .000 .078 .000 .000
mit0896g.snx: UPO1 .092 -.001 .000 .060 .000 -.001 .000 .000 .000
jpl0896g.snx: USUD .078 .000 .000 .096 .000 .000 -.035 .000 .000
mit0896g.snx: USUD .078 .000 .000 .096 .000 .000 -.035 .000 .000
ncl0896g.snx: USUD .110 .000 .000 .128 .000 .000 -.035 .000 .000
jpl0896g.snx: ZIMM .070 .000 .000 .068 .000 .000 .000 .000 .000
mit0896g.snx: ZIMM .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
ANTENNA PHASE CENTRE CONFLICTS IN FILE mit0896g.snx
MDVO Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: MDVO
ANTENNA PHASE CENTRE CONFLICTS IN FILE ncl0896g.snx
ASC1 Missing Antenna
AUCK Missing Antenna
CHAT Missing Antenna
DGAR Missing Antenna
KIRU Missing Antenna
KWJ1 Missing Antenna
MKEA Missing Antenna
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: ASC1 AUCK CHAT DGAR KIRU KWJ1 MKEA
CONFIDENCE LEVEL FOR OUTLIER DETECTION: 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat KIT3 MIT-JPL Lat CAS1 MIT-JPL Lon DAV1 JPL-NCL
Lon SANT MIT-JPL Lon CRO1 MIT-JPL Lon OHIG MIT-JPL
Lon OHIG MIT-NCL Hgt CRO1 JPL-NCL Hgt FORT JPL-NCL
Hgt IRKT JPL-NCL Hgt IRKT MIT-JPL Hgt EISL MIT-JPL
Hgt CRO1 MIT-JPL
42 GLOBAL STATIONS:
ALBH ALGO BOR1 BRAZ BRMU BRUS COCO FAIR FLIN GOLD
GUAM HART HOB2 KELY KERG KOKB KOSG LHAS MAC1 MADR
MALI MATE MCM4 MDO1 METS NYAL ONSA PAMA PERT POTS
RCM6 REYK SHAO STJO TAIW TIDB TSKB WES2 WTZR YAR1
YELL ZWEN
11 FIDUCIAL STATIONS:
ALGO FAIR GOLD HART KOKB KOSG MADR TIDB WTZR YAR1
YELL
AVERAGE COORDINATE RMS:
42 GLOBAL STATIONS 11 FIDUCIAL STATIONS
MIT-JPL MIT-NCL JPL-NCL MIT-ITRF94 JPL-ITRF94 NCL-ITRF94
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.4 1.3 0.7 7.3 7.7 7.6
Lon 1.5 1.4 1.4 13.8 14.4 13.9
Hgt 4.1 4.2 2.9 9.4 9.0 9.2
3D 4.6 4.7 3.3 18.3 18.7 18.3
VARIANCE FACTORS (CHI-SQUARE / (DEGREES OF FREEDOM)):
42 GLOBAL STATIONS 11 FIDUCIAL STATIONS
JPL-NCL MIT-JPL MIT-NCL MIT-ITRF94 JPL-ITRF94 NCL-ITRF94
------- ------- ------- ---------- ---------- ----------
0.210 0.612 0.307 1.089 1.018 1.066
OFFSETS AND SCALE FACTOR WRT ITRF94 (FIDUCIAL STATIONS):
Tx (mm) STD(mm) Ty (mm) STD(mm) Tz (mm) STD(mm) Scale (ppb) STD(ppb)
------- ------- ------- ------- ------- ------- ----------- --------
JPL -4.1 5.1 13.8 5.3 -11.1 6.7 -3.1 0.6
MIT -1.2 4.4 14.1 4.5 -2.3 5.3 -2.5 0.6
NCL 0.3 4.9 9.6 5.0 -6.7 6.1 -2.6 0.6
REMARKS:
THE FOLLOWING FIDUCIAL STATIONS ARE MISSING FROM mit0896g.snx :
Stations: TROM
THE FOLLOWING FIDUCIAL STATIONS ARE MISSING FROM jpl0896g.snx :
Stations: TROM
THE FOLLOWING FIDUCIAL STATIONS ARE MISSING FROM ncl0896g.snx :
Stations: TROM
LONGITUDE RMS AT 11 FIDUCIAL STATIONS HIGHER THAN USUAL. FOLLOWING
STATIONS HAVE LONGITUDE DIFFERENCES WITH ITRF94 IN EXCESS OF 2 CM.:
Stations: MADR KOSG
STATION / GNAAC / LONGITUDE DIFFERENCE (mm.):
MADR JPL -32.4
MIT -29.8
NCL -29.3
KOSG JPL 20.6
MIT 20.1
NCL 20.2
--
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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