[IGSREPORT-5727] Wk 0991 G-SINEX Comparisons
NRCan
NRCan
Mon Feb 1 14:10:26 PST 1999
******************************************************************************
IGS Electronic Report Mon Feb 1 14:10:26 PST 1999 Message Number 5727
******************************************************************************
Author: NRCan GSDivision
Subject: Wk 0991 G-SINEX Comparisons
Subject: Wk 0991 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0991
(JAN 3, 1999 - JAN 9, 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*** THIS ALGORITHM AND FORMAT WILL SHORTLY BE SUPERSEDED.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:
jpl0991g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0991g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0991g.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))
jpl0991g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 1.676 .000 .000
mit0991g.snx: BAKO .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0991g.snx: BISH .078 .000 -.003 .074 -.003 -.001 .046 .000 .000
mit0991g.snx: BISH .110 .000 .000 .128 .000 .000 .085 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0991g.snx: BSHM .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0991g.snx: BSHM .081 .000 -.001 .078 -.002 .004 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0991g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0991g.snx: PETP .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.
jpl0991g.snx: PETR .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0991g.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.
mit0991g.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.
jpl0991g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
ncl0991g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
- Both wrong Should be L1/L2 offset, eccentricity 0.078, 0.096, 2.475 M. respectively.
jpl0991g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
jpl0991g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0991g.snx: SFER .075 .002 -.001 .069 -.001 .002 1.626 .000 .000
jpl0991g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0991g.snx: WUHN .110 .000 .000 .128 .000 .000 2.320 .000 .000
jpl0991g.snx: ZIMM .078 .000 -.003 .074 -.003 -.001 .000 .000 .000
FILE ncl0991g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0991g.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 mit0991g.snx
MAS1 Multiple Sites
AREQ Multiple Sites
GALA Multiple Sites
MDVO Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: MAS1 AREQ GALA 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 70.3 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 74.2 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 67.9 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat DAV1 JPL-MIT Lat CAS1 MIT-NCL Lat DAV1 MIT-NCL
Lat KERG MIT-NCL Lat YAR1 MIT-NCL Lat HOB2 MIT-NCL
Lat PERT MIT-NCL Lat HRAO MIT-NCL Lon ASC1 MIT-NCL
Hgt HRAO JPL-MIT Hgt NTUS JPL-MIT Hgt COCO JPL-MIT
Hgt COCO MIT-NCL Hgt HRAO MIT-NCL Hgt NTUS MIT-NCL
Hgt MALI MIT-NCL
129 GLOBAL STATIONS:
ALBH ALGO ALIC AMC2 AMCT ANKR AOML AREQ AUCK BAHR
BOGO BOGT BOR1 BRMU BRUS CAGL CASA CEDU CHAT CHUR
CICE CRO1 DGAR DRAO DUBO EISL ELAT FAIR FLIN FORT
GILB GLSV GODE GOL2 GOLD GOPE GRAS GRAZ GUAM HERS
HOFN HOLB IRKT JOZE JPLM KABR KARR KATZ KELY KIRU
KOKB KOSG KOUR KSTU KUNM KWJ1 LAMA LPGS MAC1 MAD2
MADR MAG0 MAS1 MATE MAW1 MDO1 MEDI METS NANO NICO
NLIB NOTO NOUM NRC1 NSSP NYA1 NYAL OBER ONSA PENC
PIE1 POL2 POTS PRDS QUIN RAMO REYK RIOG RIOP SANT
SCH2 SELE SHAO SJDV SOL1 STJO SUWN TAEJ TELA THTI
THU1 TID2 TIDB TIXI TOUL TOW2 TRO1 TSKB UCLU UPAD
URUM USNA USNO USUD VESL VILL WES2 WHIT WILL WSLR
WSRT WTZR XIAN YAKA YAKZ YAR2 YELL ZECK ZWEN
42 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 PERT PIE1
POTS SANT SHAO THU1 TIDB TSKB VILL WES2 WTZR YAR1
YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
129 GLOBAL STATIONS 42 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 1.1 1.2 1.1 6.2 5.7 6.3
Lon 1.7 3.3 3.2 9.6 8.9 6.9
Hgt 2.3 2.7 3.0 13.5 14.8 13.9
3D 3.0 4.4 4.5 17.7 18.2 16.7
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
136 GLOBAL STATIONS 42 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.137 0.069 0.251 14.085 19.363 6.567
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 -3.2 2.1 -1.6 2.1 3.1 2.5 -0.9 0.1
MIT -1.7 1.4 -1.1 1.5 -0.4 1.6 -0.6 0.1
NCL -4.1 2.9 -4.9 2.7 10.1 4.2 -0.6 0.1
REMARKS:
FILE mit0991g.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:
AREQ B 42202M005
AREQ A 42202M005
GALA A 42005M001
GALA B 42005M001
MDVO A 12309M001
MDVO B 12309M002
TROM B 10302M006
TROM A 10302M003
NYAL B 10317M003
NYAL A 10317M001
STATION NAME/POINT CODES CHANGED IN mit0991g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
MASP B MAS1 A 31303M002
MDVO B MDVO A 12309M002
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
4 Changes in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0991g.snx :
Stations: BRAZ HART KIT3 LHAS OHIG
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0991g.snx :
Stations: BRAZ HART KIT3 LHAS OHIG
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0991g.snx :
Stations: BRAZ HART KIT3 LHAS MAD2 OHIG
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
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
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B NYA1 A
12355M001 PETR A
PETP A
12355M002 PETP A
PETR A
92201M006 TAHI A
92201M009 THTI A THTI A
TAHI A
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B
12353M001 YAKA A YAKA A
YAKZ A YAKZ 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 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:
cod09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09917.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09917.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
============= ====== ====== ====== ====== ====== ====== ======
50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
92201M009 TAHI A THTI A THTI A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
12309M002 MDVO A MDVO B MDVO A MDVO A
31303M002 MASP A MASP B MASP B MAS1 A MASP B MAS1 A
12353M001 YAKZ A YAKA 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
22601M001 NTUS A NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
42005M001 GALA A GALA A GALA A GALA B GALA A
13407S012 MADR A MAD2 A MADR A MAD2 A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A URUM 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>]
More information about the IGSREPORT
mailing list