Subject: [IGSREPORT-5155] Wk 0963 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Wed, 29 Jul 1998 12:47:09 PDT

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IGS Electronic Report    Wed Jul 29 12:47:09 PDT 1998      Message Number 5155
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0963 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0963   
(JUN 21, 1998 - JUN 27, 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:
   mit0963g.snx at cddis.gsfc.nasa.gov
   jpl0963g.snx at cddis.gsfc.nasa.gov
   ncl0963g.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))

jpl0963g.snx: BARB    .000   .000   .000   .000   .000   .000   .000   .000   .000
mit0963g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
ncl0963g.snx: BARB    .000   .000   .000   .000   .000   .000   .000   .000   .000
   - Unresolvable. No log file. Antenna parameters not listed in igs.snx.

jpl0963g.snx: INEG    .000   .000   .000   .000   .000   .000   .130   .000   .000
mit0963g.snx: INEG    .080   .000   .001   .079  -.001   .001   .130   .000   .000
   - Unresolvable. No log file.

jpl0963g.snx: MDVO    .000   .000   .000   .000   .000   .000   .146   .000   .000
mit0963g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
   - Latest log file indicates L1/L2 offset should be 0.0692 M.
     (Antenna not listed in igs.snx.)

jpl0963g.snx: HFLK    .078   .000   .000   .096   .000   .000   .000   .000   .000
ncl0963g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0963g.snx: LAMA    .081   .000  -.001   .078  -.002   .004   .061   .000   .000
jpl0963g.snx: MONP    .000   .000   .000   .000   .000   .000   .119   .000   .000
jpl0963g.snx: SUTH    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0963g.snx: TROM    .078   .000   .000   .096   .000   .000  2.475   .000   .000

FILE ncl0963g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0963g.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 mit0963g.snx                             
   GALA Multiple Sites       
 
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
   Stations: GALA 
 
CONFIDENCE LEVEL FOR OUTLIER DETECTION (ITRF96): 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
   Lon MADR JPL-NCL   Lon MADR MIT-NCL   Hgt COCO JPL-NCL
   Hgt COCO MIT-JPL   Hgt AREQ MIT-JPL     

54 GLOBAL STATIONS:
   ALBH ALGO ANKR ASC1 AUCK BAHR BOGT BOR1 BRMU CHAT
   CRO1 DAV1 DGAR DRAO EISL FAIR FORT GODE GOLD GRAZ
   GUAM HOB2 IRKT KELY KERG KIRU KIT3 KOKB KOSG KOUR
   KSTU KWJ1 LHAS LPGS MAC1 MAG0 MALI MATE MCM4 MDO1
   MEDI METS MKEA NICO NLIB NOUM NRC1 NTUS OHIG ONSA
   PERT PETR PIE1 POL2      

29 FIDUCIAL STATIONS:
   ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GRAZ GUAM
   HOB2 IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1
   MADR MALI MATE MDO1 NLIB OHIG ONSA PERT PIE1 

AVERAGE COORDINATE RMS USING ITRF96:

             54    GLOBAL  STATIONS         29   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.5       2.0       1.5        5.6        6.2        6.0 
Lon        1.4       2.7       3.0        6.7        6.6       11.1 
Hgt        3.3       3.6       2.1       11.4       10.4       10.3 
3D         3.9       5.0       4.0       14.4       13.8       16.3

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

        54    GLOBAL  STATIONS         29   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.148     0.588     0.303      3.545      3.360      2.145

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       1.4     2.9     7.8     2.9   -17.0     4.7        -0.1      0.1
MIT       1.3     2.1     0.3     2.1   -14.6     3.3        -0.7      0.1
NCL       0.4     2.1     1.9     2.1    -0.5     2.0        -0.3      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0963g.snx :
   Stations: BRAZ MASP NYAL

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0963g.snx :
   Stations: BRAZ

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0963g.snx :
   Stations: BRAZ HART MASP NYAL POTS SANT SHAO THU1 TIDB TROM TSKB VILL WES2 WTZR YAR1 YELL ZWEN

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 GODE A
    40451S003 USNO A              
    40405S031 GOL2 A GOL2 A GOLD A
              GOLD A GOLD A       
              GOL1 A              
    30302M007 HARK A HARK A       
              HART A HART B       
              HAR1 A              
    30302M004 HRAO A HRAO A HRAO A
    13407S012 MAD2 A MAD2 A MADR A
              MADR A MADR A       
    31303M002 MAS1 A              
              MASP A              
    31303M001        MAS1 A       
    12309M002 MDVO A              
    12309M001        MDVO A       
    10317M003 NYA1 A NYA1 A       
    10317M001 NYAL A              
    40499S020 RCM6 A RCM6 A       
              RICH A RICH A       
    50103M108 TID2 A TIDB A       
              TIDB A TID2 A       
    10302M006 TRO1 A TRO1 A       
    10302M003 TROM A TROM A       
    12353M001 YAKA A YAKZ A       
              YAKZ A              
    50107M004 YAR1 A YAR1 A       
              YAR2 A              
 
MISSING IERS DOMES NOS AT IGS:
-----------------------------
  ALIC A  BAKO A  BISH A  DARW A  ELAT A  INEG A  KARR A  KATZ A  MAW1 A  RIOG A
  TELA A  TOW2 A  URUM A
 
MISSING IERS DOMES NOS AT MIT:
-----------------------------
  HOFN A  SCH2 A  SOL1 A  USNA A  USNO A  AOML A  CHUR A  DUBO A  FLIN A  INEG A
  AMCT A  PRDS A  WILL A  WSLR A  NANO A  UCLU A  HOLB A  WHIT A  THTI A  TOW2 A
  ALIC A  DARW A  YAKA A  SUWN A  KARR A  BAKO A  SELE A  MAW1 A  NSSP A  ZECK A
  KATZ A  ELAT A  TELA A  GLSV A  NOTO A  HFLK A  OBER A  CAGL A  WSRT A  TOUL A
  EBRE A

IERS DOMES NO    COD    NRC    ESA    GFZ    IGS    NOA    SIO
============= ====== ====== ====== ====== ====== ====== ======
    30302M004 HRAO A        HRAO A        HRAO A              
    30302M007 HART A HART B HART B HARK A HARK A HART B       
    30302M002        HART B                                   
    31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B       
    31303M001                                           MASP A
    12309M002 MDVO A                                          
    12309M001                                           MDVO A
    10317M003 NYAL A               NYA1 A NYA1 A              
    40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOLD A
    40451S003 USNO A USNO A USNO A                            
    40451M123 GODE A                      GODE A GODE A GODE A
    40499S020 RICH A RCM6 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
    50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
    10302M006 TROM A               TRO1 A                     
    10302M003               TROM A               TROM A TROM A
    42005M001 GALA A               GALA A GALA A GALA B       
    13407S012               MADR A        MAD2 A MADR A MADR A
    22601M001               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:
-----------------------------
  MAD2 A  ASC1 A  HOFN A  LPGS A  BARB 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  AMCT A  PRDS A  GOL2 A
  WILL A  WSLR A  NANO A  UCLU A  HOLB A  WHIT A  THTI A  MKEA A  KWJ1 A  NOUM A
  PETR A  MAG0 A  TOW2 A  ALIC A  DARW A  YAKA A  YAKZ A  SUWN A  KARR A  WUHN A
  BAKO A  NTUS A  COCO A  KSTU A  SELE A  DGAR A  MAW1 A  BAHR A  NSSP A  ZECK A
  KATZ A  ELAT A  TELA A  NICO A  GLSV A  HARK A  HRAO A  SUTH 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]>]