[IGSREPORT-5690] Wk 0983 G-SINEX Comparisons
NRCan
NRCan
Fri Jan 22 14:02:16 PST 1999
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IGS Electronic Report Fri Jan 22 14:02:16 PST 1999 Message Number 5690
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Author: NRCan GSDivision
Subject: Wk 0983 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0983
(NOV 8, 1998 - NOV 14, 1998)
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.
FILES COMPARED:
jpl0983g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0983g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0983g.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))
jpl0983g.snx: BSHM .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0983g.snx: BSHM .081 .000 -.001 .078 -.002 .004 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0983g.snx: CEDU .110 .000 .000 .128 .000 .000 .006 .000 .000
mit0983g.snx: CEDU .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0983g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0983g.snx: INEG .081 .000 -.001 .078 -.002 .004 .066 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0980g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0980g.snx: MDVO .078 .000 -.003 .074 -.003 -.001 .146 .000 .000
- Both wrong. Should be L1/L2 offset, eccentricity 0.0692, 0.0692, 0.146 M. respectively.
See log file, as igs.snx lists no L1/L2 offsets for antenna EXT. L1/L2 KINEMATIC.
jpl0983g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0983g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
- IERS DOMES NO 12355M001 should refer to PETR (0.0796 M. eccentricity)
and 12355M002 to PETP (0.0435 M. eccentricity). Yet JPL lists PETP for 12355M001,
while MIT, NCL list it for 12355M002.
mit0983g.snx: NYAL .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0983g.snx: NYAL .078 .000 .000 .096 .000 .000 5.216 .000 .000
- IERS DOMES NO 10317M001 should refer to NYAL (5.2160 M. eccentricity) and 10317M003
to NYA1 (0.0000 M. eccentricity). Yet JPL, NCL lists NYA1 A for 10317M003, while
MIT lists NYAL B for the same IERS DOMES NO.
jpl0983g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
jpl0983g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0983g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0983g.snx: WUHN .110 .000 .000 .128 .000 .000 2.320 .000 .000
jpl0983g.snx: ZIMM .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
FILE ncl0983g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0983g.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 mit0983g.snx
MAS1 Multiple Sites
AREQ Multiple Sites
GALA Multiple Sites
IISC Multiple Sites
MDVO Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: MAS1 AREQ GALA IISC MDVO
COORDINATE DIFFERENCE THRESHOLD FOR STATION REJECTION: 55 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
THE FOLLOWING STATIONS WERE DELETED FROM NCL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt MCM4 61.6 mm.
THE FOLLOWING STATIONS WERE DELETED FROM MIT
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt MCM4 65.3 mm.
THE FOLLOWING STATIONS WERE DELETED FROM JPL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt MCM4 62.2 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat VESL JPL-MIT Lat GOUG JPL-MIT Lat HRAO MIT-NCL
Lat GOUG MIT-NCL Lat HARK MIT-NCL Lat ASC1 MIT-NCL
Lat KERG MIT-NCL Lat FORT MIT-NCL Lat KOUR MIT-NCL
Lon BAKO JPL-MIT Lon COCO JPL-MIT Lon AREQ JPL-NCL
Lon ASC1 MIT-NCL Lon SANT MIT-NCL Lon OHIG MIT-NCL
Lon AUCK MIT-NCL Lon NOUM MIT-NCL Hgt HARK JPL-MIT
Hgt MALI JPL-MIT Hgt NTUS JPL-MIT Hgt COCO JPL-MIT
Hgt NTUS JPL-NCL Hgt MALI MIT-NCL Hgt HRAO MIT-NCL
118 GLOBAL STATIONS:
ALBH ALGO ALIC AMC2 AOML BAHR BISH BOGO BOGT BOR1
BRMU BRUS CAGL CAS1 CASC CHAT CHUR CRO1 DAV1 DGAR
DRAO DUBO EISL ELAT FAIR FLIN GILB GLSV GODE GOL2
GOLD GOPE GRAS GRAZ GUAM HERS HOB2 HOFN HOLB IAVH
IRKT JOZE JPLM KABR KARR KATZ KELY KIRU KOKB KOSG
KSTU KWJ1 LAMA LHAS LPGS MAC1 MAD2 MADR MAG0 MAS1
MATE MAW1 MDO1 MEDI METS MKEA NANO NLIB NOTO NRC1
NSSP NYA1 OBER ONSA PENC PERT PIE1 POL2 POTS PRDS
QUIN RAMO REYK SCH2 SELE SHAO SJDV SOL1 STJO SUWN
TAEJ TELA THU1 TID2 TIDB TIXI TOUL TOW2 TRO1 TSKB
UCLU UPAD USNA USNO USUD VILL WES2 WHIT WILL WSLR
WSRT WTZR XIAN YAKA YAR1 YELL ZECK ZWEN
43 FIDUCIAL STATIONS:
ALGO AREQ BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE
GRAZ GUAM HOB2 IRKT KERG KOKB KOSG KOUR KWJ1 LHAS
MAC1 MAD2 MALI MAS1 MATE MDO1 NLIB OHIG ONSA PERT
PIE1 POTS SANT SHAO THU1 TIDB TSKB VILL WES2 WTZR
YAR1 YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
118 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.0 1.0 1.0 4.9 4.3 4.7
Lon 1.3 1.2 1.5 5.8 5.9 5.8
Hgt 2.5 2.7 2.9 11.5 11.4 11.6
3D 3.0 3.1 3.4 13.8 13.5 13.7
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
129 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.170 0.119 0.156 6.380 8.625 5.246
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 -7.5 2.1 -8.2 2.2 7.7 3.2 -0.7 0.1
MIT -2.3 1.6 -10.5 1.7 4.3 2.2 -0.5 0.1
NCL -8.8 3.1 -9.7 3.1 10.2 4.5 -0.7 0.1
REMARKS:
FILE mit0983g.snx: STDs for daily EOPs listed in SOLUTION/APRIORI block, with-
out corresponding covariances in SOLUTION/MATRIX_APRIORI
block. Hence, these records are deleted prior to any com-
putation. NOTE: A priori UT STD 6.66667 ms. is less than
all corresponding UT STDs in the SOLUTION/ESTIMATE block,
which are in turn two orders of magnitude greater than pre-
vious weekly UT STDs; e.g., .0279325 ms. for week 979.
STATION NAME/POINT CODES CHANGED IN ncl0983g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
MULTIPLY-USED 4-LETTER STATION NAME CODES IN mit0983g.snx:
AREQ B 42202M005
AREQ A 42202M005
GALA A 42005M001
GALA B 42005M001
IISC A 22306M002
IISC B 22306M002
MDVO A 12309M001
MDVO B 12309M002
NYAL B 10317M003
NYAL A 10317M001
STATION NAME/POINT CODES CHANGED IN mit0983g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
MASP B MAS1 A 31303M002
YAKZ A YAKA A 12353M001
MDVO B MDVO A 12309M002
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
5 Changes in all.
STATION NAME/POINT CODES CHANGED IN jpl0983g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0983g.snx :
Stations: BRAZ KIT3 TROM
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0983g.snx :
Stations: BRAZ KIT3
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0983g.snx :
Stations: BRAZ HART KIT3 MAD2 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
============= ====== ====== ======
42202M005 AREQ A AREQ B AREQ A
ARE1 A AREQ A
42005M001 GALA A GALA A GALA A
GAL1 A GALA B
40405S031 GOL2 A GOLD A GOL2 A
GOLD A GOL2 A GOLD A
GOL1 A
30302M007 HARK A HART B HARK A
HART A HARK A
HAR1 A
22306M002 IISC A IISC A IISC A
IIS1 A IISC B
13407S012 MAD2 A MAD2 A
MADR A MADR A
31303M002 MAS1 A MASP B MAS1 A
MASP A
31303M001 MAS1 A
12309M002 MDVO A MDVO B MDVO A
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B NYA1 A
12355M001 PETP A
12355M002 PETP A PETP A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B TRO1 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 TELA A TOW2 A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
INEG A AMC2 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:
cod09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09837.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09837.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
============= ====== ====== ====== ====== ====== ====== ======
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 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 GALA A
12309M002 MDVO A MDVO B MDVO A
31303M002 MASP A MASP B MASP B MAS1 A MASP B MAS1 A
10317M003 NYAL A NYA1 A NYA1 A NYA1 A
50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TID2 A
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
22601M001 NTUS A NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
10302M006 TROM A TRO1 A TRO1 A
13407S012 MADR A MAD2 A MADR A MAD2 A
12355M002 PETP A PETP A
12355M001 PETP A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A
MISSING IERS DOMES NOS AT SIO:
-----------------------------
INEG A AMC2 A 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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