[IGSREPORT-5689] Wk 0982 G-SINEX Comparisons
NRCan
NRCan
Fri Jan 22 14:00:55 PST 1999
******************************************************************************
IGS Electronic Report Fri Jan 22 14:00:55 PST 1999 Message Number 5689
******************************************************************************
Author: NRCan GSDivision
Subject: Wk 0982 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0982
(NOV 1, 1998 - NOV 7, 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:
jpl0982g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0982g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0982g.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))
jpl0982g.snx: BSHM .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0982g.snx: BSHM .081 .000 -.001 .078 -.002 .004 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0982g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0982g.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.
jpl0982g.snx: PETP .110 .000 .000 .128 .000 .000 .080 .000 .000
mit0982g.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.
jpl0982g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
ncl0982g.snx: TROM .110 .000 .000 .128 .000 .000 2.369 .000 .000
- Both wrong. Should be L1/L1 offset, eccentricity 0.078, 0.096, 2.475 M. respectively.
jpl0982g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
jpl0982g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0982g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
FILE ncl0982g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE mit0982g.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 61.4 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 64.5 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 62.3 mm.
Hgt KOUR 70.4 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat RIOG JPL-MIT Lat MALI JPL-MIT Lat LPGS JPL-MIT
Lat OHIG JPL-MIT Lat HARK JPL-MIT Lat HRAO JPL-MIT
Lat GOUG JPL-MIT Lat VESL JPL-MIT Lat HRAO MIT-NCL
Lat HARK MIT-NCL Lat ASC1 MIT-NCL Lat DAV1 MIT-NCL
Lon BAKO JPL-MIT Lon COCO JPL-MIT Lon LAMA JPL-MIT
Lon EISL JPL-NCL Lon SANT MIT-NCL Lon ASC1 MIT-NCL
Lon LPGS MIT-NCL Lon OHIG MIT-NCL Lon NOUM MIT-NCL
Lon CAS1 MIT-NCL Hgt WUHN JPL-MIT Hgt LAMA JPL-MIT
Hgt COCO JPL-MIT Hgt MALI JPL-MIT Hgt AREQ JPL-NCL
Hgt DGAR MIT-NCL Hgt ASC1 MIT-NCL Hgt WUHN MIT-NCL
120 GLOBAL STATIONS:
ALBH ALGO ALIC AMC2 AOML AUCK BAHR BISH BOGO BOGT
BOR1 BRMU BRUS CAGL CEDU CHAT CHUR CRO1 DRAO DUBO
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 KERG KIRU KIT3 KOKB KOSG
KSTU KWJ1 LHAS MAC1 MAD2 MADR MAG0 MAS1 MATE MAW1
MDO1 MEDI METS MKEA NANO NICO NLIB NOTO NRC1 NSSP
NTUS 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 YAR2 YELL ZECK ZIMM ZWEN
43 FIDUCIAL STATIONS:
ALGO AREQ BAHR BRMU CAS1 DAV1 DRAO FAIR FORT GODE
GRAZ GUAM HOB2 IRKT KERG KIT3 KOKB KOSG 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:
120 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 1.1 1.4 5.3 4.8 4.7
Lon 1.5 1.2 1.5 5.7 5.9 5.6
Hgt 2.1 2.7 2.6 12.2 12.0 11.9
3D 2.7 3.1 3.3 14.5 14.2 14.0
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
------- ------- ------- ---------- ---------- ----------
0.137 0.155 0.163 5.407 7.036 4.244
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 -0.2 2.1 -5.0 2.3 6.0 3.2 -0.7 0.1
MIT 4.2 1.6 -3.1 1.6 3.1 2.1 -0.7 0.1
NCL -0.8 3.1 -3.2 3.2 8.6 4.6 -0.7 0.1
REMARKS:
FILE mit0982g.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 mit0982g.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
TROM A 10302M003
TROM B 10302M006
STATION NAME/POINT CODES CHANGED IN mit0982g.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 jpl0982g.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 jpl0982g.snx :
Stations: BRAZ NYAL
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0982g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0982g.snx :
Stations: BRAZ HART KOUR MAD2 NYAL PERT
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
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 INEG 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 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:
cod09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09827.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09827.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
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
12309M002 MDVO A MDVO B MDVO A MDVO A
10317M003 NYAL A NYA1 A NYA1 A NYA1 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
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 NTUS A
22601M002 NTUS 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 RIOG 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>]
More information about the IGSREPORT
mailing list