Subject: [IGSREPORT-5238] Wk 0965 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Fri, 21 Aug 1998 14:03:51 PDT

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IGS Electronic Report    Fri Aug 21 14:03:51 PDT 1998      Message Number 5238
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0965 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0965   
(JUL 5, 1998 - JUL 11, 1998)

Contacts: J. Kouba ([email-masked])
          D. Hutchison ([email-masked])
	  R. Ferland ([email-masked])

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 stations  not  present  in  all GNAAC combined SINEX files were de-
      leted  from all three combined solutions.  Every solution was then sub-
      jected to a 7-parameter transformation  into  a common reference system
      (the 47 ITRF96 station positions). 

   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:
   jpl0965g.snx at cddis.gsfc.nasa.gov
   mit0965g.snx at cddis.gsfc.nasa.gov
   ncl0965g.snx at cddis.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))

jpl0965g.snx: INEG    .000   .000   .000   .000   .000   .000   .130   .000   .000
mit0965g.snx: INEG    .080   .000   .001   .079  -.001   .001   .130   .000   .000
   - Unresolvable. No log file.

mit0965g.snx: FAIR    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0965g.snx: GOLD    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0965g.snx: HFLK    .078   .000   .000   .096   .000   .000   .000   .000   .000
ncl0965g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0965g.snx: KOKB    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0965g.snx: MONP    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0965g.snx: SANT    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0965g.snx: SUTH    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0965g.snx: TROM    .078   .000   .000   .096   .000   .000  2.475   .000   .000
mit0965g.snx: YAR1    .110   .000   .000   .128   .000   .000   .000   .000   .000

FILE ncl0965g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0965g.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 mit0965g.snx                             
   GALA Multiple Sites      
   IISC Multiple Sites      
 
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
   Stations: GALA IISC 
 
CONFIDENCE LEVEL FOR OUTLIER DETECTION (ITRF96): 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
   Lat KERG JPL-MIT   Lat DAV1 JPL-MIT   Lat OHIG JPL-MIT
   Lat KERG MIT-NCL   Lat DAV1 MIT-NCL   Lon COCO JPL-MIT
   Lon BOGT JPL-MIT   Lon GUAM JPL-MIT   Lon ASC1 JPL-MIT
   Lon WUHN JPL-MIT   Lon KOSG JPL-MIT   Lon SHAO JPL-MIT
   Lon SHAO MIT-NCL   Lon ASC1 MIT-NCL   Lon COCO MIT-NCL
   Lon BOGT MIT-NCL   Hgt WUHN JPL-MIT   Hgt COCO JPL-MIT
   Hgt MDVO JPL-MIT   Hgt WUHN JPL-NCL   Hgt MDVO JPL-NCL
   Hgt COCO MIT-NCL          

72 GLOBAL STATIONS:
   ALBH ALGO ANKR AREQ AUCK BAHR BARB BRMU BRUS CHAT
   DGAR DRAO EISL FAIR FORT GODE GOL2 GOLD GRAZ HARK
   HOB2 IRKT KELY KIRU KIT3 KOKB KOUR KSTU KWJ1 LHAS
   LPGS MAC1 MAG0 MALI MATE MCM4 MDO1 MEDI METS MKEA
   NICO NLIB NRC1 NYA1 ONSA PERT PETR PIE1 POL2 POTS
   RCM6 REYK SANT STJO TAEJ THTI THU1 TIDB TROM TSKB
   USNO USUD VILL WES2 WHIT WSRT WTZR YAKZ YAR1 YELL
   ZECK ZWEN        

41 FIDUCIAL STATIONS:
   ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
   HOB2 IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1
   MALI MATE MDO1 NLIB OHIG ONSA PERT PIE1 POTS SANT
   SHAO THU1 TIDB TROM TSKB VILL WES2 WTZR YAR1 YELL
   ZWEN         

AVERAGE COORDINATE RMS USING ITRF96:

             72    GLOBAL  STATIONS         41   FIDUCIAL   STATIONS
        JPL-MIT   JPL-NCL   MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.8       0.6       1.9        3.7        3.2        3.6 
Lon        1.4       0.9       1.3        5.6        4.8        5.2 
Hgt        3.7       1.7       3.7       12.6       13.7       12.2 
3D         4.3       2.0       4.3       14.3       14.8       13.8

VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):

        77    GLOBAL  STATIONS         41   FIDUCIAL   STATIONS
   JPL-MIT   JPL-NCL   MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.625     0.085     0.418      3.558      3.627      2.478

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       4.0     1.7    11.0     2.1   -37.7     4.5        -0.5      0.1
MIT       3.2     2.3     4.5     2.3   -36.7     3.7        -1.2      0.1
NCL       6.6     3.0    13.1     3.0   -31.8     4.8        -0.4      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0965g.snx :
   Stations: BRAZ

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0965g.snx :
   Stations: BRAZ MASP

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0965g.snx :
   Stations: BRAZ HART MADR MASP

IERS DOMES NO    JPL    MIT    NCL
============= ====== ====== ======
    42202M005 AREQ A AREQ A AREQ A
              ARE1 A              
    42005M001 GALA A GALA A GALA A
              GAL1 A GALA B       
    40451M123 GODE A GODE A GODE A
    40451S003 USNO A USNO A USNO 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 HART B       
              HAR1 A              
    30302M004 HRAO A HRAO A HRAO 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 A              
    31303M001        MAS1 A       
    12309M002 MDVO A        MDVO A
    12309M001        MDVO A       
    10317M003 NYA1 A NYA1 A NYA1 A
    10317M001 NYAL A NYAL A NYAL A
    40499S020 RCM6 A RICH A RCM6 A
              RICH A RCM6 A       
    50103M108 TID2 A TID2 A TIDB A
              TIDB A TIDB A       
    10302M006 TRO1 A TRO1 A       
    10302M003 TROM A TROM A TROM A
    12353M001 YAKA A YAKA A YAKZ A
              YAKZ A YAKZ A       
    50107M004 YAR1 A YAR1 A YAR1 A
              YAR2 A              
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  ALIC A  BAKO A  BISH A  ELAT A  INEG A  KATZ A  MAW1 A  RIOG A  TELA A  URUM A

MISSING IERS DOMES NOS AT MIT:
-----------------------------
  INEG A  BAKO A  KATZ A  ELAT A  TELA A

IERS DOMES NO    COD    NRC    ESA    GFZ    JPL    NOA    SIO
============= ====== ====== ====== ====== ====== ====== ======
    50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
    31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B       
    42005M001 GALA A               GALA A GALA A GALA B       
    10317M003 NYAL A               NYA1 A NYA1 A              
    10317M001        NYAL A                      NYAL A NYAL A
    10302M006 TROM A               TRO1 A                     
    10302M003               TROM A               TROM A TROM A
    12353M001 YAKZ A                      YAKA A        YAKZ A
                                          YAKZ A        YAKA A
    40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
    40451M123 GODE A                      GODE A GODE A GODE A
    40451S003 USNO A USNO A USNO A        USNO A        USNO A
    40499S020 RICH A               RCM6 A        RCM6 A RCM6 A
    42202M005 AREQ A AREQ B AREQ B AREQ A        AREQ B AREQ A
    50103M108 TIDB A        TIDB A TID2 A TID2 A TIDB A TIDB A
    30302M004 HRAO A        HRAO A        HRAO A        HRAO A
    30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
    22306M002 IISC A        IISC B IISC A IISC A IISC B IISC 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 SIO:
-----------------------------
  MASP A  INEG A  BAKO A  KATZ A  ELAT A  TELA A

-- 
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: [email-masked]

[Mailed From: David Hutchison <[email-masked]>]