[IGSREPORT-5725] Wk 0989 G-SINEX Comparisons
NRCan
NRCan
Mon Feb 1 14:07:57 PST 1999
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IGS Electronic Report Mon Feb 1 14:07:57 PST 1999 Message Number 5725
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Author: NRCan GSDivision
Subject: Wk 0989 G-SINEX Comparisons
Subject: Wk 0989 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0989
(DEC 20, 1998 - DEC 26, 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.
*** THIS ALGORITHM AND FORMAT WILL SHORTLY BE SUPERSEDED. ***
FILES COMPARED:
jpl0989g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0989g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0989g.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))
jpl0989g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 1.676 .000 .000
mit0989g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0989g.snx: BISH .078 .000 -.003 .074 -.003 -.001 .046 .000 .000
mit0989g.snx: BISH .110 .000 .000 .128 .000 .000 .085 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0989g.snx: BSHM .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0989g.snx: BSHM .081 .000 -.001 .078 -.002 .004 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0989g.snx: MDVO .000 .000 .000 .000 .000 .000 .146 .000 .000
mit0989g.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.
jpl0989g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0989g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
ncl0989g.snx: PETP .110 .000 .000 .128 .000 .000 .043 .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, PETR for 12355M001,
while MIT lists them for 12355M002.
jpl0989g.snx: PETR .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0989g.snx: PETR .110 .000 .000 .128 .000 .000 .044 .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, PETR for 12355M001,
while MIT lists them for 12355M002.
mit0989g.snx: TAHI .110 .000 .000 .128 .000 .000 1.047 .000 .000
- IERS DOMES NO 92201M009 should refer to THTI (1.047 M. eccentricity)
and 92201M006 to TAHI (1.055 M. eccentricity). Yet MIT lists both THTI, TAHI
for 92201M009.
mit0989g.snx: TIXI .108 .000 .000 .128 .001 .002 .079 .000 .000
- According to igs_01.pcv, DORNE MARGOLIN ASH antenna should have L1/L2 vertical offset
0.110, 0.128 M. respectively with 0.0 L1/L2 offset north and east. This leaves MIT
slightly off (but < 3 mm. in all offsets).
jpl0989g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
jpl0989g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0989g.snx: SFER .075 .002 -.001 .069 -.001 .002 1.626 .000 .000
jpl0989g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0989g.snx: ZIMM .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
FILE ncl0989g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0989g.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 mit0989g.snx
MAS1 Multiple Sites
AREQ Multiple Sites
GALA Multiple Sites
IISC Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: MAS1 AREQ GALA IISC
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 76.1 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 79.4 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 74.0 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat HRAO JPL-MIT Lat KERG JPL-MIT Lat MAW1 JPL-MIT
Lat DAV1 JPL-MIT Lat DAV1 MIT-NCL Lat KERG MIT-NCL
Lat CAS1 MIT-NCL Lat HRAO MIT-NCL Lon GOUG MIT-NCL
Lon HRAO MIT-NCL Hgt WUHN JPL-MIT Hgt COCO JPL-MIT
Hgt WUHN JPL-NCL Hgt COCO MIT-NCL Hgt GOUG MIT-NCL
Hgt MALI MIT-NCL Hgt KERG MIT-NCL
130 GLOBAL STATIONS:
ALBH ALGO ALIC AMC2 AMCT ANKR AOML AREQ ASC1 AUCK
BAHR BOGO BOGT BOR1 BRMU BRUS CAGL CASA CASC CEDU
CHAT CHUR CIT1 CRO1 DGAR DRAO DUBO EISL ELAT FAIR
FLIN FORT GILB GLSV GODE GOL2 GOLD GOPE GRAS GRAZ
GUAM HERS HOB2 HOFN HOLB IAVH IRKT JOZE JPLM KABR
KARR KATZ KELY KIRU KOKB KOSG KOUR KSTU KUNM KWJ1
LAMA LPGS MAC1 MAD2 MADR MAG0 MAS1 MATE MDO1 MEDI
METS NANO NICO NLIB NOTO NOUM NRC1 NTUS NYA1 NYAL
OBER ONSA PENC PIE1 POL2 POTS PRDS QUIN RAMO REYK
RIOG SANT SCH2 SELE SHAO SJDV SOL1 STJO SUWN TAEJ
TELA THTI THU1 TID2 TIDB TOUL TOW2 TRO1 TSKB UCLU
UPAD USNA USNO USUD VESL VILL WES2 WHIT WILL WSLR
WSRT WTZR XIAN YAKA YAKZ YAR1 YAR2 YELL ZECK ZWEN
41 FIDUCIAL STATIONS:
ALGO AREQ BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE
GRAZ GUAM HOB2 IRKT KERG KOKB KOSG KOUR KWJ1 MAC1
MAD2 MALI MAS1 MATE MDO1 NLIB NYAL ONSA PIE1 POTS
SANT SHAO THU1 TIDB TSKB VILL WES2 WTZR YAR1 YELL
ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
130 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.4 1.3 1.4 6.3 5.4 6.3
Lon 1.9 3.4 3.2 9.5 8.5 6.7
Hgt 2.4 2.6 3.1 13.5 15.8 15.4
3D 3.4 4.5 4.7 17.7 18.8 17.9
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
134 GLOBAL STATIONS 41 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.140 0.129 0.308 12.313 15.977 5.769
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 -6.0 2.4 -4.1 2.4 3.6 2.8 -0.7 0.1
MIT -4.3 1.6 -4.1 1.7 1.3 2.0 -0.5 0.1
NCL -7.7 3.1 -8.2 3.0 11.1 4.4 -0.6 0.1
REMARKS:
FILE mit0989g.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.
MULTIPLY-USED 4-LETTER STATION NAME CODES IN mit0989g.snx:
AREQ B 42202M005
AREQ A 42202M005
GALA A 42005M001
GALA B 42005M001
IISC A 22306M002
IISC B 22306M002
NYAL B 10317M003
NYAL A 10317M001
STATION NAME/POINT CODES CHANGED IN mit0989g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
MASP B MAS1 A 31303M002
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
3 Changes in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0989g.snx :
Stations: BRAZ HART KIT3 LHAS OHIG PERT TROM
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0989g.snx :
Stations: BRAZ HART KIT3 LHAS OHIG PERT
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0989g.snx :
Stations: BRAZ HART KIT3 LHAS MAD2 OHIG PERT 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 AMCT A
AMC2 A
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
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 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B NYA1 A
12355M001 PETR A
PETP A
12355M002 PETP A PETP A
PETR A
92201M009 THTI A THTI A THTI A
TAHI A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B TRO1 A
12353M001 YAKA A YAKZ A
YAKZ A YAKA A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A BISH A BSHM A ELAT A GILB A KABR A KARR A KATZ A MAW1 A
RAMO A RIOG A TELA A TOW2 A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
RIOG 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:
cod09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09897.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
(* FILE esa09897.ssc not yet submitted at time of analysis. *)
(ENTRIES APPEAR ONLY WHERE ACS DIFFER.)
IERS DOMES NO COD NRCan GFZ JPL NGS SIO
============= ====== ====== ====== ====== ====== ======
50107M004 YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
92201M009 TAHI A THTI A THTI A
31303M002 MASP A MASP B MAS1 A MASP B MAS1 A
12353M001 YAKZ A YAKA A YAKZ A
12355M002 PETR A PETP A PETP A
12355M001 PETP A
40472S004 AMCT A AMC2 A
40405S031 GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
50103M108 TIDB A TIDB A TID2 A TID2 A TIDB A TID2 A
22306M002 IISC A IISC A IISC A IISC B IISC A
42202M005 AREQ A AREQ B AREQ A AREQ A AREQ B AREQ A
42005M001 GALA A GALA A GALA A GALA B GALA A
10302M006 TROM A TRO1 A TRO1 A
22601M001 NTUS A NTUS A NTUS A
22601M002 NTUS A
13407S012 MAD2 A MADR A MAD2 A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A RIOG 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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