Subject: [IGSREPORT-5319] Wk 0968 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Tue, 15 Sep 1998 12:21:59 PDT

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IGS Electronic Report    Tue Sep 15 12:21:59 PDT 1998      Message Number 5319
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0968 G-SINEX Comparisons

Subject: Wk 0968 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0968   
(JUL 26, 1998 - AUG 1, 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:
   jpl0968g.snx at cddis.gsfc.nasa.gov
   mit0968g.snx at cddis.gsfc.nasa.gov
   ncl0968g.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))

jpl0968g.snx: INEG    .000   .000   .000   .000   .000   .000   .130   .000   .000
mit0968g.snx: INEG    .080   .000   .001   .079  -.001   .001   .130   .000   .000
   - Unresolvable. No log file.

mit0968g.snx: FAIR    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0968g.snx: GOLD    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0968g.snx: HFLK    .078   .000   .000   .096   .000   .000   .000   .000   .000
ncl0968g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0968g.snx: KOKB    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0968g.snx: MONP    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0968g.snx: SANT    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0968g.snx: SUTH    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0968g.snx: TROM    .078   .000   .000   .096   .000   .000  2.475   .000   .000
mit0968g.snx: YAR1    .110   .000   .000   .128   .000   .000   .000   .000   .000

FILE ncl0968g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0968g.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 mit0968g.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 TID2 JPL-MIT   Lat TID2 MIT-NCL
   Lat KERG MIT-NCL   Lon NTUS JPL-MIT   Lon MAS1 JPL-MIT
   Lon EISL JPL-MIT   Lon LPGS MIT-NCL   Lon BARB MIT-NCL
   Lon NTUS MIT-NCL   Lon MAS1 MIT-NCL   Hgt RCM6 JPL-MIT
   Hgt KWJ1 JPL-MIT   Hgt BARB JPL-MIT   Hgt THU1 JPL-NCL
   Hgt BARB MIT-NCL   Hgt KWJ1 MIT-NCL   Hgt RCM6 MIT-NCL
   Hgt WUHN MIT-NCL   Hgt KSTU MIT-NCL     

70 GLOBAL STATIONS:
   ALBH ALGO AREQ ASC1 AUCK BAHR BOGT BRMU CAS1 CHAT
   COCO CRO1 DAV1 DGAR DRAO FAIR FORT GODE GOL2 GOLD
   GRAZ GUAM HARK HOB2 IRKT KELY KIRU KIT3 KOKB KOSG
   KOUR LHAS MAC1 MAG0 MALI MATE MCM4 MDO1 METS MKEA
   NICO NLIB NRC1 NYA1 ONSA PERT PIE1 POL2 POTS REYK
   SANT SHAO STJO TAEJ TIDB TROM TSKB USNO USUD VILL
   WES2 WHIT WSRT WTZR XIAN YAKZ YAR1 YELL ZECK ZWEN

40 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 ONSA PERT PIE1 POTS SANT SHAO
   THU1 TIDB TROM TSKB VILL WES2 WTZR YAR1 YELL ZWEN

AVERAGE COORDINATE RMS USING ITRF96:

             70    GLOBAL  STATIONS         40   FIDUCIAL   STATIONS
        JPL-MIT   JPL-NCL   MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.4       0.4       1.5        4.4        3.9        4.4 
Lon        1.2       0.6       1.2        6.7        6.5        6.5 
Hgt        3.0       1.1       3.3       10.1        9.9        9.7 
3D         3.6       1.3       3.8       12.9       12.5       12.5

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

        75    GLOBAL  STATIONS         40   FIDUCIAL   STATIONS
   JPL-MIT   JPL-NCL   MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.324     0.033     0.331      2.205      2.799      2.053

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       1.3     2.7     0.2     2.8   -34.1     4.7        -0.4      0.1
MIT       0.4     1.9     0.4     1.9   -27.8     3.0        -1.0      0.1
NCL       3.3     3.0     0.5     3.1   -28.3     4.7        -0.3      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0968g.snx :
   Stations: BRAZ OHIG

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0968g.snx :
   Stations: BRAZ MASP OHIG

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0968g.snx :
   Stations: BRAZ HART MADR MASP OHIG

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        MAS1 A
              MASP A              
    31303M001        MAS1 A       
    12309M002 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 TID2 A
              TIDB A TIDB A TIDB A
    10302M006 TRO1 A TRO1 A       
    10302M003 TROM A TROM A TROM A
    12353M001 YAKA A YAKZ A YAKZ A
              YAKZ A YAKA A       
    50107M004 YAR1 A YAR1 A YAR1 A
              YAR2 A              
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  ALIC A  BAKO A  BISH A  DARW A  ELAT A  GILB A  INEG 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:
-----------------------------
  INEG A  BAKO A  KATZ A  GILB A  KABR A  ELAT A  TELA A  RAMO A

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
    31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
    12353M001 YAKZ A                      YAKA A        YAKZ A
                                          YAKZ A              
    40451M123 GODE A                             GODE A GODE A
    40451S003 USNO A USNO A USNO A        USNO A        USNO A
    40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 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 TID2 A
    30302M004 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
    42005M001 GALA A               GALA A GALA A GALA B       
    10317M003 NYAL A               NYA1 A NYA1 A              
    10317M001        NYAL A NYAL A               NYAL A NYAL A
    10302M006 TROM A               TRO1 A                     
    10302M003               TROM A               TROM A TROM A
    13407S012               MADR A        MAD2 A MADR A MAD2 A
    22601M001               NTUS A NTUS A NTUS A        NTUS A
    22601M002                                    NTUS A       
 
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
  BISH A  URUM A  RIOG A
 
MISSING IERS DOMES NOS AT SIO:
-----------------------------
  INEG A  BAKO A  KATZ A  GILB A  KABR A  ELAT A  TELA A  RAMO A

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

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