Subject: [IGSREPORT-5102] Wk 0959 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Thu, 9 Jul 1998 17:40:03 PDT

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IGS Electronic Report    Thu Jul  9 17:40:03 PDT 1998      Message Number 5102
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0959 G-SINEX Comparisons

Subject: Wk 0959 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0959   
(MAY 24, 1998 - MAY 30, 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:
   mit0959g.snx at cddis.gsfc.nasa.gov
   jpl0959g.snx at cddis.gsfc.nasa.gov
   ncl0959g.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))

jpl0959g.snx: INEG    .000   .000   .000   .000   .000   .000   .130   .000   .000
mit0959g.snx: INEG    .080   .000   .001   .079  -.001   .001   .130   .000   .000
   - Unresolvable. No log file.

jpl0959g.snx: MDVO    .000   .000   .000   .000   .000   .000   .146   .000   .000
mit0959g.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.)

jpl0959g.snx: MONP    .000   .000   .000   .000   .000   .000   .119   .000   .000
jpl0959g.snx: SUTH    .000   .000   .000   .000   .000   .000   .119   .000   .000
mit0959g.snx: TROM    .078   .000   .000   .096   .000   .000  2.475   .000   .000
ncl0959g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000

FILE ncl0959g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0959g.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 mit0959g.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 COCO MIT-JPL   Lat COCO MIT-NCL   Lat AREQ MIT-NCL
   Lat EISL MIT-NCL   Lon LPGS JPL-NCL   Lon WUHN MIT-JPL
   Lon SHAO MIT-NCL   Lon WUHN MIT-NCL   Lon LPGS MIT-NCL
   Hgt WUHN JPL-NCL   Hgt COCO MIT-JPL   Hgt MCM4 MIT-NCL
   Hgt PIE1 MIT-NCL   Hgt WUHN MIT-NCL     

59 GLOBAL STATIONS:
   ALBH ALGO ASC1 AUCK BAHR BOGT BRMU CAS1 CHAT CRO1
   DAV1 DGAR DRAO FAIR FORT GODE GOLD GUAM HARK HOB2
   IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1 MADR
   MALI MATE MDO1 METS MKEA NLIB NRC1 NTUS OHIG ONSA
   PERT POTS RCM6 REYK SANT STJO THU1 TIDB TROM TSKB
   USNO USUD VILL WES2 WHIT WTZR YAR1 YELL ZWEN 

41 FIDUCIAL STATIONS:
   ALGO BRMU DAV1 DRAO FAIR FORT GODE GOLD GUAM HOB2
   IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1 MADR
   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:

             59    GLOBAL  STATIONS         41   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.1       2.4       1.7        3.9        4.4        5.0 
Lon        1.3       2.6       2.0        5.8        6.0        6.1 
Hgt        3.0       5.4       4.7       12.8       12.4       12.3 
3D         3.4       6.5       5.4       14.6       14.5       14.6

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

        65    GLOBAL  STATIONS         41   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.309     0.511     0.774      4.974      4.801      2.772

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      -5.5     3.0    20.0     3.1   -20.4     4.7        -0.7      0.1
MIT      -7.8     1.9    10.4     2.0   -25.4     3.0        -0.8      0.1
NCL      -0.6     3.4    31.4     3.9     0.7     6.0        -0.2      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0959g.snx :
   Stations: BRAZ MASP

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0959g.snx :
   Stations: BRAZ

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0959g.snx :
   Stations: BRAZ GRAZ HART MASP

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        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              
    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
  YAKA A  YAKZ A  SUWN A  WUHN A  BAKO A  NTUS A  COCO 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
  SOFI 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
    22306M002 IISC A        IISC B IISC A IISC A IISC B       
    22306M001                                           IISC A
    31303M002 MASP A MASP B MASP B MAS1 A        MASP B       
    31303M001                                           MASP A
    42005M001 GALA A               GALA A GALA A GALA B       
    42202M005 AREQ A AREQ B AREQ B AREQ A        AREQ B AREQ A
    12309M002 MDVO A                                          
    12309M001                                           MDVO A
    10317M003 NYAL A               NYA1 A NYA1 A              
    10317M001        NYAL A                      NYAL A NYAL 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 GODE A
    40499S020 RICH A RCM6 A        RCM6 A        RCM6 A       
    50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB 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                                   
    12353M001 YAKZ A                      YAKA A              
                                          YAKZ A              
    10302M006 TROM A               TRO1 A                     
    10302M003               TROM A               TROM A TROM A
    22601M001 NTUS A        NTUS A NTUS A                     
    22601M002                                    NTUS A       
    92201M006        TAHI A                      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  SELE A  DGAR A  BAHR A  NSSP A
  ZECK A  KATZ A  ELAT A  TELA A  NICO A  HARK A  HRAO A  SOFI 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]>]