[IGSREPORT-5913] Wk 0998 G-SINEX Comparisons
NRCan
NRCan
Tue Mar 30 08:33:43 PST 1999
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IGS Electronic Report Tue Mar 30 8:33:43 PST 1999 Message Number 5913
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Author: NRCan GSDivision
Subject: Wk 0998 G-SINEX Comparisons
Subject: Wk 0998 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0998
(FEB 21, 1999 - FEB 27, 1999)
Contacts: 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
55 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.
*** THIS ALGORITHM AND FORMAT WILL SHORTLY BE SUPERSEDED. ***
FILES COMPARED:
jpl0998g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0998g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0998g.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))
jpl0998g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 1.676 .000 .000
mit0998g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0998g.snx: BISH .078 .000 -.003 .074 -.003 -.001 .046 .000 .000
mit0998g.snx: BISH .110 .000 .000 .128 .000 .000 .085 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0998g.snx: BSHM .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0998g.snx: BSHM .081 .000 -.001 .078 -.002 .004 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0998g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0998g.snx: INEG .081 .000 -.001 .078 -.002 .004 .100 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0998g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0998g.snx: MDVO .069 .000 .000 .069 .000 .000 .146 .000 .000
- Both wrong. Latest log file (mdvo9902.log) gives antenna as 4000ST L1/L2 GEOD W/O GP,
presumably matching igs_01.pcv's 4000ST L1/L2 GEOD Mod. 14532 with L1/L2 offsets of
0.078, 0.000, -0.003 M. (up, north, east) and 0.074, -0.003, -0.001 M. (up, north,
east). L1/L2 offset 0.069 M. does occur in antenna.gra for this antenna, but the
user is warned that igs_01.pcv should take precedence. However, the only graphic
appearing in the above log file is for TRIMBLE: 4000SSE L1/L2 KINEMATIC, unchanged
from previous log files.
jpl0998g.snx: TROM .078 .000 .000 .096 .000 .000 2.369 .000 .000
mit0998g.snx: TROM .110 .000 .000 .128 .000 .000 .000 .000 .000
- Both wrong. Should be L1/L2 offset, eccentricity 0.078, 0.096, 2.475 M. respectively.
jpl0998g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
jpl0998g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0998g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0998g.snx: WUHN .110 .000 .000 .128 .000 .000 2.320 .000 .000
FILE ncl0998g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0998g.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
COORDINATE DIFFERENCE THRESHOLD FOR STATION REJECTION: 55 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat LPGS JPL-MIT Lat DGAR JPL-MIT Lat GOUG JPL-MIT
Lat RIOG JPL-MIT Lat OHIG JPL-MIT Lat VESL JPL-MIT
Lat OHIG MIT-NCL Lon HOFN JPL-MIT Lon HOFN JPL-NCL
Lon ASC1 MIT-NCL Hgt HARK JPL-MIT Hgt CAGL JPL-MIT
Hgt LPGS JPL-MIT Hgt LPGS MIT-NCL Hgt HRAO MIT-NCL
Hgt COCO MIT-NCL Hgt CRO1 MIT-NCL
127 GLOBAL STATIONS:
ALBH ALGO ALIC AMC2 ANKR AOML AUCK BAHR BOGO BOGT
BOR1 BRMU BRUS CAS1 CASC CEDU CHAT CHUR CIT1 DAV1
DRAO DUBO EISL ELAT FAIR FLIN FORT GILB GLSV GODE
GOL2 GOLD GOPE GRAS GRAZ GUAM HERS HFLK HOB2 HOLB
IISC IRKT JOZE JPLM KABR KARR KATZ KELY KIRU KOKB
KOSG KOUR KSTU KUNM KWJ1 LAMA MAC1 MAD2 MADR MAG0
MALI MAS1 MATE MAW1 MCM4 MDO1 MEDI METS MKEA NANO
NLIB NOTO NOUM NRC1 NTUS NYA1 OBER ONSA PENC PERT
PETP PIE1 POL2 POTS PRDS RAMO REYK SANT SCH2 SELE
SFER SHAO SJDV SOL1 STJO SUWN TAEJ TELA THU1 TID2
TIDB TIXI TOUL TOW2 TRO1 TSKB UCLU UPAD URUM USNA
USNO USUD VILL WES2 WHIT WILL WSLR WSRT WTZR XIAN
YAKA YAKZ YAR1 YELL ZECK ZIMM ZWEN
41 FIDUCIAL STATIONS:
ALGO BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE GRAZ
GUAM HOB2 IRKT KOKB KOSG KOUR KWJ1 MAC1 MAD2 MALI
MAS1 MATE MCM4 MDO1 NLIB OHIG ONSA PERT PIE1 POTS
SANT SHAO THU1 TIDB TSKB VILL WES2 WTZR YAR1 YELL
ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
127 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 0.8 1.0 1.2 5.1 5.2 4.5
Lon 1.3 3.0 3.0 9.4 9.6 6.6
Hgt 3.6 3.0 4.4 15.3 15.1 14.0
3D 3.9 4.4 5.4 18.7 18.7 16.1
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
135 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.219 0.102 0.449 13.760 23.194 6.193
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 0.8 0.9 -1.0 0.9 0.3 0.9 -0.9 0.1
MIT 1.3 0.7 -1.2 0.7 -0.8 0.7 -0.6 0.1
NCL 5.5 2.7 -6.8 2.8 0.6 1.2 -0.9 0.1
REMARKS:
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0998g.snx :
Stations: AREQ BRAZ KERG KIT3 LHAS
FOR THE FILE mit0998g.snx, UT WAS DELETED & THE A PRIORI COVARIANCE MATRIX
WAS SCALED UPWARD (ALL ELEMENTS) BY 0.0005% PRIOR TO DECONSTRAINING.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0998g.snx :
Stations: AREQ BRAZ HART KERG KIT3 LHAS
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0998g.snx :
Stations: AREQ BRAZ HART KERG KIT3 LHAS MAD2 NYAL TROM
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
============= ====== ====== ======
40472S003 AMCT A
AMC2 A
40472S004 AMC2 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
HAR1 A
22306M002 IISC A IISC A IISC A
IIS1 A
13407S012 MAD2 A MAD2 A
MADR A MADR A
31303M002 MAS1 A MAS1 A
31303M001 MAS1 A
12309M002 MDVO A MDVO A
12309M001 MDVO A
12355M001 PETR A
12355M002 PETP A PETP A PETP A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
12353M001 YAKA A YAKZ A
YAKZ A YAKA A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A BISH A BSHM 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 URUM A BISH A KATZ A GILB A KABR A BSHM A ELAT A TELA A
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN ABBREVIATED .ssc FILES:
cod09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09987.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09987.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
============= ====== ====== ====== ====== ====== ====== ======
12353M001 YAKZ A YAKA A YAKZ A
12355M002 PETR A PETP A PETP A
40472S004 AMCT A AMC2 A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
50103M108 TIDB A 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
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
10302M006 TROM A TRO1 A TRO1 A
10302M003 TROM A TROM A
22306M002 IISC A IISC B IISC A IISC B IISC A
31303M002 MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
13407S012 MADR A MAD2 A MADR A MAD2 A
22601M001 NTUS A NTUS A
22601M002 NTUS A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A URUM A RIOG A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
RAMO A
MISSING IERS DOMES NOS AT NGS:
-----------------------------
BAKO A
MISSING IERS DOMES NOS AT SIO:
-----------------------------
KATZ A GILB A KABR A BSHM A ELAT A TELA 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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