Subject: [IGSREPORT-5009] Wk 0951 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Tue, 16 Jun 1998 9:38:17 PDT

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IGS Electronic Report    Tue Jun 16  9:38:17 PDT 1998      Message Number 5009
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0951 G-SINEX Comparisons

Subject: Wk 0951 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0951   
(MAR 29, 1998 - APR 4, 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:
   mit0951g.snx at cddis.gsfc.nasa.gov
   jpl0951g.snx at cddis.gsfc.nasa.gov
   ncl0951g.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))

jpl0951g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0951g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
ncl0951g.snx: BARB    .000   .000   .000   .000   .000   .000   .000   .000   .000
   - Unresolvable (no log file)

jpl0951g.snx: BISH    .075   .002  -.001   .069  -.001   .002   .046   .000   .000
mit0951g.snx: BISH    .078   .000  -.003   .074  -.003  -.001   .046   .000   .000
   - Unresolvable (no log file)

jpl0951g.snx: ELAT    .069   .000   .000   .068   .000   .000  -.011   .000   .000
mit0951g.snx: ELAT    .078   .000  -.003   .074  -.003  -.001  -.011   .000   .000
   - Unresolvable (no log file)

jpl0951g.snx: KATZ    .069   .000   .000   .068   .000   .000  -.012   .000   .000
mit0951g.snx: KATZ    .078   .000  -.003   .074  -.003  -.001  -.012   .000   .000
   - Unresolvable (no log file)

jpl0951g.snx: MALI    .078   .000   .000   .096   .000   .000   .222   .000   .000
mit0951g.snx: MALI    .110   .000   .000   .128   .000   .000   .170   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .135 M.

jpl0951g.snx: NOUM    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
mit0951g.snx: NOUM    .075   .002  -.001   .069  -.001   .002   .000   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 0.000 M.

jpl0951g.snx: TELA    .069   .000   .000   .068   .000   .000   .000   .000   .000
mit0951g.snx: TELA    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
   - Unresolvable (no log file)

jpl0951g.snx: TROM    .078   .000   .000   .096   .000   .000  2.473   .000   .000
mit0951g.snx: TROM    .078   .000   .000   .096   .000   .000  2.473   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 2.369 M.

jpl0951g.snx: CAGL    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0951g.snx: CICE    .110   .000   .000   .128   .000   .000   .083   .000   .000
jpl0951g.snx: EBRE    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
jpl0951g.snx: GALA    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: HARK    .110   .000   .000   .128   .000   .000  9.754   .000   .000
jpl0951g.snx: HOFN    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: HRAO    .110   .000   .000   .128   .000   .000  9.754   .000   .000
jpl0951g.snx: KOUR    .078   .000   .000   .096   .000   .000   .132   .000   .000
jpl0951g.snx: LPGS    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: MEDI    .110   .000   .000   .128   .000   .000   .146   .000   .000
jpl0951g.snx: NICO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0951g.snx: NYAL    .078   .000   .000   .096   .000   .000  5.216   .004   .001
jpl0951g.snx: SELE    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: SFER    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: SOFI    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: WSRT    .110   .000   .000   .128   .000   .000   .380   .000   .000
jpl0951g.snx: WUHN    .110   .000   .000   .128   .000   .000  2.320   .000   .000
jpl0951g.snx: YAR1    .078   .000   .000   .096   .000   .000   .073   .000   .000
jpl0951g.snx: ZECK    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0951g.snx: ZIMM    .069   .000   .000   .068   .000   .000   .000   .000   .000

FILE ncl0951g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

CONFIDENCE LEVEL FOR OUTLIER DETECTION (ITRF96): 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
   Lat RCM6 MIT-JPL   Lat BOGT MIT-JPL   Lat MCM4 MIT-NCL
   Lon EISL MIT-JPL   Lon KWJ1 MIT-JPL   Lon DGAR MIT-JPL
   Lon NTUS MIT-JPL   Lon FORT MIT-JPL   Lon TAHI MIT-NCL
   Hgt NTUS MIT-JPL   Hgt BOGT MIT-JPL   Hgt AREQ MIT-JPL
   Hgt TROM MIT-JPL   Hgt YELL MIT-JPL   Hgt ALBH MIT-JPL

59 GLOBAL STATIONS:
   ALGO ANKR ASC1 AUCK BAHR BRMU CAS1 CHAT COCO CRO1
   DAV1 DRAO FAIR GODE GOLD GRAZ GUAM HOB2 IISC IRKT
   KELY KERG KIRU KIT3 KOKB KOSG KSTU LHAS MAC1 MADR
   MAG0 MATE MDO1 METS MKEA NLIB NRC1 OHIG ONSA PERT
   PETR PIE1 POL2 POTS REYK SANT SHAO STJO TAEJ THU1
   TIDB TSKB USNO USUD WES2 WHIT WTZR YAR1 ZWEN 

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

AVERAGE COORDINATE RMS USING ITRF96:

             59    GLOBAL  STATIONS         39   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.0       0.8       0.5        4.8        5.4        5.3 
Lon        1.1       0.7       0.8        6.5        7.1        6.7 
Hgt        2.1       1.8       1.5        9.9        9.7        9.6 
3D         2.6       2.1       1.8       12.7       13.2       12.9

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

        72    GLOBAL  STATIONS         39   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.061     0.263     0.114      3.019      4.059      2.392

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      -7.4     3.0    12.2     3.1   -15.5     4.8        -0.7      0.1
MIT      -7.3     2.3     4.8     2.4    -8.8     3.4        -0.7      0.1
NCL      -4.7     3.1    11.4     3.3    -8.8     4.9        -0.7      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0951g.snx :
   Stations: BRAZ HART MASP VILL

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0951g.snx :
   Stations: BRAZ VILL

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0951g.snx :
   Stations: BRAZ HART MASP VILL

IERS DOMES NO    JPL    MIT    NCL
============= ====== ====== ======
    42202M005 AREQ A AREQ A AREQ A
              ARE1 A              
    40400M007 CICE A CICE A       
              JPLM A JPLM A       
    40451M123 GODE A GODE A GODE A
    40451S003               USNO A
    40405S031 GOL2 A GOL2 A GOLD A
              GOL1 A GOLD A       
              GOLD A              
    30302M002 HART A              
              HARK A              
              HAR1 A              
              HRAO A              
    30302M007               HARK A
    30302M004               HRAO A
    22306M001 IISC A IISC A       
              IIS1 A              
    22306M002               IISC A
    13407S012 MADR A MADR A MADR A
              MAD2 A              
    31303M002 MAS1 A              
    31303M001 MASP A MAS1 A       
    12309M002 MDVO A              
    12309M001        MDVO A       
    40499S018 RICH A              
    40499S020        RICH A RCM6 A
    50103M108 TIDB A TIDB A TIDB A
              TID2 A TID2 A       
    50107M004 YAR1 A YAR1 A YAR1 A
              YAR2 A              
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  AOML A  ASC1 A  BAHR A  BISH A  CASA A  CHUR A  COCO A  DGAR A  EBRE A  ELAT A
  FLIN A  HFLK A  HOLB A  KATZ A  KWJ1 A  MAG0 A  MEDI A  MKEA A  NANO A  NOTO A
  NOUM A  NSSP A  PETR A  LPGS A  NICO A  GALA A  SFER A  ZECK A  HOFN A  CAGL A
  PRDS A  RCM6 A  RIOG A  SELE A  SOFI A  SOL1 A  SCH2 A  TELA A  TOUL A  UCLU A
  USNA A  USNO A  WHIT A  WSLR A  XIAN A  YAKA A  YAKZ 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  GALA A  CHUR A  DUBO A  FLIN A  PRDS A  CASA A
  WILL A  WSLR A  NANO A  UCLU A  HOLB A  WHIT A  TAHI A  MKEA A  KWJ1 A  NOUM A
  PETR A  MAG0 A  YAKZ A  YAKA A  WUHN A  XIAN A  NTUS A  COCO A  KSTU 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    JPL    NOA    SIO
============= ====== ====== ====== ====== ====== ====== ======
    50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
    30302M007 HART A HART B HART B HARK A        HART B       
    30302M004 HRAO A        HRAO A                            
    30302M002                             HARK A              
                                          HRAO A              
    22601M001 NTUS A        NTUS A NTUS A NTUS A              
    22601M002                                    NTUS A       
    31303M002 MASP A MASP B MASP B MAS1 A        MASP B       
    31303M001                                           MASP A
    12309M002 MDVO A                                          
    12309M001                                           MDVO A
    42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
    22306M002 IISC A        IISC B IISC A        IISC A       
    22306M001                             IISC A        IISC A
    40451S003 USNO A USNO A USNO A                            
    40451M123 GODE A        GODE A               GODE A GODE A
    40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOLD 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
    13407S012               MADR A        MAD2 A MADR A MADR A
    40400M007                      JPLM A CICE A        JPLM A
 
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
  BISH A  RIOG A
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  ASC1 A  BAHR A  CASA A  COCO A  DGAR A  KWJ1 A  MAG0 A  MEDI A  MKEA A  NOTO A
  PETR A  GALA A  ZECK A  USNO A
 
MISSING IERS DOMES NOS AT NOA:
-----------------------------
  MKEA A  GALA 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  PRDS A  WILL A  WSLR A  NANO A
  UCLU A  HOLB A  WHIT A  TAHI A  MKEA A  KWJ1 A  NOUM A  PETR A  MAG0 A  YAKA A
  YAKZ A  WUHN A  XIAN 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  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]>]