[IGSREPORT-5179] Wk 0956 G-SINEX Comparisons
AC
AC
Wed Aug 5 14:56:36 PDT 1998
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IGS Electronic Report Wed Aug 5 14:56:36 PDT 1998 Message Number 5179
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0956 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0956
(MAY 3, 1998 - MAY 9, 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:
mit0956g.snx at cddis.gsfc.nasa.gov
jpl0956g.snx at cddis.gsfc.nasa.gov
ncl0956g.snx at hollwey.ncl.ac.uk
GNAACs: MIT JPL NCL
STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))
jpl0956g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0956g.snx: BARB .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0956g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0956g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0956g.snx: INEG .080 .000 .001 .079 -.001 .001 .130 .000 .000
- Unresolvable. No log file.
jpl0956g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0956g.snx: MDVO .078 .000 -.003 .074 -.003 -.001 .146 .000 .000
ncl0956g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
- Latest log file indicates L1/L2 offset should be 0.0692 M.
(Not listed in igs.snx.)
jpl0956g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0956g.snx: SUTH .110 .000 .000 .128 .000 .000 .085 .000 .000
- Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .119 M.
mit0956g.snx: FAIR .110 .000 .000 .128 .000 .000 .116 .000 .000
ncl0956g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
mit0956g.snx: KOKB .110 .000 .000 .128 .000 .000 .093 .000 .000
jpl0956g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0956g.snx: NOUM .078 .000 -.003 .074 -.003 -.001 -.002 -.005 .006
mit0956g.snx: NYA1 .078 .000 .000 .096 .000 .000 .033 .000 .000
mit0956g.snx: SANT .110 .000 .000 .128 .000 .000 .093 .000 .000
mit0956g.snx: TIDB .110 .000 .000 .128 .000 .000 .000 .000 .000
mit0956g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
mit0956g.snx: YAR1 .110 .000 .000 .128 .000 .000 .073 .000 .000
FILE ncl0963g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0956g.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 mit0956g.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 EISL MIT-JPL Lat EISL MIT-NCL Lat SANT MIT-NCL
Lat AREQ MIT-NCL Lat OHIG MIT-NCL Lon SHAO JPL-NCL
Lon RCM6 MIT-JPL Lon COCO MIT-JPL Lon SHAO MIT-NCL
Lon BOGT MIT-NCL Lon RCM6 MIT-NCL Lon FORT MIT-NCL
Hgt CHAT MIT-JPL Hgt CHAT MIT-NCL
65 GLOBAL STATIONS:
ALBH ALGO ASC1 AUCK BAHR BRMU BRUS CAS1 CRO1 DAV1
DGAR DRAO FAIR GODE GOLD GRAZ GUAM HARK HOB2 IRKT
KELY KERG KIRU KIT3 KOKB KOSG KOUR KWJ1 LHAS LPGS
MAC1 MADR MAG0 MALI MATE MCM4 MDO1 METS MKEA NLIB
NRC1 NTUS ONSA PERT PETR PIE1 POL2 POTS REYK STJO
THU1 TIDB 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 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:
65 GLOBAL STATIONS 41 FIDUCIAL STATIONS
MIT-JPL MIT-NCL JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.0 1.2 1.0 4.8 4.9 5.1
Lon 0.8 1.2 0.9 6.6 6.9 6.4
Hgt 3.3 3.4 2.3 10.8 10.1 10.1
3D 3.6 3.8 2.6 13.6 13.1 13.0
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
65 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-NCL MIT-JPL MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.087 0.555 0.396 3.628 4.008 2.480
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 -4.5 2.9 23.9 3.0 -35.8 4.7 -0.4 0.1
MIT -7.9 2.1 17.0 2.2 -40.0 3.5 -0.6 0.1
NCL -2.8 3.0 19.2 3.2 -18.8 4.6 -0.3 0.2
REMARKS:
TROM WAS NOT USED IN GLOBAL COMPARISON DUE TO LARGE COORDINATE DIFFERENCES
WITH ITRF94, DESCRIBED BELOW:
STATION / GNAAC / HEIGHT DIFFERENCE (mm.):
TROM JPL -122.4
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0956g.snx :
Stations: BRAZ MASP
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0956g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0956g.snx :
Stations: BRAZ HART MASP
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
40405S031 GOL2 A GOLD A GOLD A
GOLD A GOL2 A
GOL1 A
30302M007 HARK A HART B HARK A
HART A
HAR1 A
30302M004 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
12309M001 MDVO A
10317M003 NYA1 A 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 JPL:
-----------------------------
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 CASA 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 NTUS 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
HRAO A SOFI 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
============= ====== ====== ====== ====== ====== ====== ======
12309M002 MDVO A MDVO A
12309M001 MDVO A
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B
31303M001 MASP A
42005M001 GALA A GALA A GALA B
10302M006 TROM A TRO1 A
10302M003 TROM A TROM A TROM A
10317M003 NYAL A NYA1 A
10317M001 NYAL A NYAL A NYA1 A NYAL A NYAL 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
30302M004 HRAO A HRAO A
30302M007 HART A HART B HART B HARK A HART B
30302M002 HART B HARK A
HRAO A
13407S012 MADR A MAD2 A MADR A MADR A
22601M001 NTUS A NTUS A NTUS A
22601M002 NTUS A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A RIOG A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ASC1 A BAHR A CASA A COCO A DGAR A SUTH A KWJ1 A MAG0 A MEDI A MKEA A
NOTO A NOUM A PETR A LPGS A GALA A ZECK A USNO A YAKA 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 NTUS 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 HRAO A SOFI 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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