Subject: [IGSREPORT-5103] Wk 0960 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Thu, 9 Jul 1998 17:46:01 PDT

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IGS Electronic Report    Thu Jul  9 17:46:01 PDT 1998      Message Number 5103
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0960 G-SINEX Comparisons

Subject: Wk 0960 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0960   
(MAY 31, 1998 - JUN 6, 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:
   mit0960g.snx at cddis.gsfc.nasa.gov
   jpl0960g.snx at cddis.gsfc.nasa.gov
   ncl0960g.snx at cddis.gsfc.nasa.gov

GNAACs: MIT JPL NCL

STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))

jpl0960g.snx: INEG    .000   .000   .000   .000   .000   .000   .130   .000   .000
mit0960g.snx: INEG    .080   .000   .001   .079  -.001   .001   .130   .000   .000
   - Unresolvable. No log file.

jpl0960g.snx: MDVO    .000   .000   .000   .000   .000   .000   .146   .000   .000
mit0960g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
   - Latest log file indicates L1/L2 offset should be 0.0692 M.
     (Not listed in igs.snx.)

jpl0960g.snx: HFLK    .078   .000   .000   .096   .000   .000   .000   .000   .000
mit0960g.snx: HFLK    .078   .000   .000   .096   .000   .000   .011   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity -.020 M.

jpl0960g.snx: MONP    .000   .000   .000   .000   .000   .000   .119   .000   .000
jpl0960g.snx: SFER    .075   .002  -.001   .069  -.001   .002  1.626   .000   .000
jpl0960g.snx: SUTH    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0960g.snx: TROM    .078   .000   .000   .096   .000   .000  2.475   .000   .000
ncl0960g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000

FILE ncl0960g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0960g.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 mit0960g.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 DGAR MIT-NCL   Lon SHAO MIT-JPL   Lon MKEA MIT-NCL
   Lon EISL MIT-NCL   Lon FORT MIT-NCL   Lon SHAO MIT-NCL
   Lon KOUR MIT-NCL   Lon LPGS MIT-NCL   Hgt COCO JPL-NCL
   Hgt HOB2 MIT-JPL   Hgt COCO MIT-NCL   Hgt CAS1 MIT-NCL

55 GLOBAL STATIONS:
   ALBH ALGO AREQ ASC1 AUCK BAHR BOGT BRMU CHAT DAV1
   DRAO FAIR GOLD GUAM HARK IRKT KELY KERG KIT3 KOKB
   KOSG KWJ1 LHAS MAC1 MADR MALI MATE MCM4 MDO1 METS
   NLIB NRC1 NTUS OHIG ONSA PERT POL2 POTS RCM6 REYK
   SANT STJO THU1 TIDB TROM TSKB USNO USUD VILL WES2
   WHIT WTZR YAR1 YELL ZWEN     

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

AVERAGE COORDINATE RMS USING ITRF96:

             55    GLOBAL  STATIONS         39   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.3       1.9       1.1        4.6        5.2        5.4 
Lon        1.4       2.1       1.7        6.3        6.2        6.3 
Hgt        3.9       5.4       3.9       11.9       11.0       10.6 
3D         4.4       6.1       4.4       14.3       13.7       13.4

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

        64    GLOBAL  STATIONS         39   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.328     0.813     0.853      4.406      4.189      2.874

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      -3.4     2.7    11.7     2.8   -16.1     4.5        -0.5      0.1
MIT      -7.0     1.9     6.4     1.9   -17.0     3.0        -0.9      0.1
NCL       2.0     3.2    13.6     3.5   -10.4     5.7         0.0      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0960g.snx :
   Stations: BRAZ MASP

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0960g.snx :
   Stations: BRAZ

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0960g.snx :
   Stations: BRAZ GODE GRAZ HART MASP PIE1

IERS DOMES NO    IGS    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       
    40451S003 USNO A        USNO A
    40405S031 GOL2 A GOL2 A GOLD A
              GOLD A GOLD A       
              GOL1 A              
    30302M007 HARK A HART B HARK A
              HART A              
              HAR1 A              
    30302M004 HRAO A        HRAO A
    22306M002 IISC A IISC B IISC A
              IIS1 A              
    22306M001        IISC A       
    13407S012 MAD2 A MADR A MADR A
              MADR A              
    31303M002 MAS1 A              
              MASP A              
    31303M001        MAS1 A       
    12309M002 MDVO A              
              MDV1 A              
    12309M001        MDVO A       
    10317M003 NYA1 A NYA1 A       
    10317M001 NYAL A NYAL A NYAL A
    40499S020 RCM6 A RICH A RCM6 A
              RICH A              
    50103M108 TID2 A TIDB A TIDB A
              TIDB A TID2 A       
    10302M006 TRO1 A TRO1 A       
    10302M003 TROM A TROM A TROM A
    12353M001 YAKA A              
              YAKZ A              
    50107M004 YAR1 A YAR1 A YAR1 A
              YAR2 A              
 
MISSING IERS DOMES NOS AT IGS:
-----------------------------
  BAKO A  BISH A  ELAT A  INEG A  KATZ A  RIOG A  TELA A  URUM A
 
MISSING IERS DOMES NOS AT MIT:
-----------------------------
  MAD2 A  SFER A  ASC1 A  HOFN A  LPGS A  CRO1 A  SCH2 A  RIOG A  NRC1 A  SOL1 A
  USNA A  USNO A  AOML A  RCM6 A  CHUR A  DUBO A  FLIN A  INEG A  PRDS A  WILL A
  WSLR A  NANO A  UCLU A  HOLB A  WHIT A  MKEA A  KWJ1 A  NOUM A  PETR A  MAG0 A
  YAKZ A  YAKA A  SUWN A  WUHN A  BAKO A  NTUS A  COCO A  KSTU A  URUM A  SELE A
  BISH A  DGAR A  BAHR A  NSSP A  ZECK A  KATZ A  ELAT A  TELA A  NICO A  HARK A
  HRAO A  NOTO A  MEDI A  HFLK A  OBER A  CAGL A  WSRT A  TOUL A  EBRE A

IERS DOMES NO    COD    NRC    ESA    GFZ    IGS    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       
    31303M001                                           MASP 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
    12309M002 MDVO A        MDVO B                            
    12309M001                                           MDVO A
    40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOLD A
    40451S003 USNO A USNO A USNO A        USNO A              
    40451M123 GODE A                             GODE A GODE A
    40499S020 RICH A RCM6 A        RCM6 A        RCM6 A       
    42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
    50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TIDB A
    30302M004 HRAO A        HRAO A        HRAO A              
    30302M007 HART A HART B HART B HARK A HARK A HART B       
    30302M002        HART B                                   
    22601M001 NTUS A        NTUS A NTUS A NTUS A              
    22601M002                                    NTUS A       
    12353M001 YAKZ A                      YAKA A              
                                          YAKZ A              
    22306M002 IISC A        IISC B IISC A IISC A IISC B       
    22306M001                                           IISC A
    10302M006 TROM A               TRO1 A                     
    10302M003               TROM A               TROM A TROM A
    92201M006        TAHI A                                   
    92201M009                             THTI A              
    13407S012               MADR A        MAD2 A MADR A MADR A
 
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
  BISH A  URUM A  RIOG A
 
MISSING IERS DOMES NOS AT SIO:
-----------------------------
  MAD2 A  SFER A  ASC1 A  HOFN A  LPGS A  CRO1 A  SCH2 A  NRC1 A  SOL1 A  USNA A
  USNO A  AOML A  RCM6 A  CHUR A  DUBO A  FLIN A  INEG A  PRDS A  WILL A  WSLR A
  NANO A  UCLU A  HOLB A  WHIT A  MKEA A  KWJ1 A  NOUM A  PETR A  MAG0 A  YAKA A
  YAKZ A  SUWN A  WUHN A  BAKO A  NTUS A  COCO A  KSTU A  SELE A  DGAR A  BAHR A
  NSSP A  ZECK A  KATZ A  ELAT A  TELA A  NICO A  HARK A  HRAO A  NOTO A  MEDI A
  HFLK A  OBER A  CAGL A  WSRT A  TOUL A  EBRE A

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

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