Subject: [IGSREPORT-5011] Wk 0953 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Tue, 16 Jun 1998 9:40:22 PDT

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IGS Electronic Report    Tue Jun 16  9:40:22 PDT 1998      Message Number 5011
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0953 G-SINEX Comparisons

Subject: Wk 0953 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0953   
(APR 12, 1998 - APR 18, 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:
   mit0953g.snx at cddis.gsfc.nasa.gov
   jpl0953g.snx at cddis.gsfc.nasa.gov
   ncl0953g.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))

jpl0953g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0953g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
ncl0953g.snx: BARB    .000   .000   .000   .000   .000   .000   .000   .000   .000
   - Unresolvable (no log file)

jpl0953g.snx: BISH    .075   .002  -.001   .069  -.001   .002   .046   .000   .000
mit0953g.snx: BISH    .078   .000  -.003   .074  -.003  -.001   .046   .000   .000
   - Unresolvable (no log file)

jpl0953g.snx: ELAT    .069   .000   .000   .068   .000   .000  -.011   .000   .000
mit0953g.snx: ELAT    .078   .000  -.003   .074  -.003  -.001  -.011   .000   .000
   - Unresolvable (no log file)

jpl0953g.snx: HARK    .110   .000   .000   .128   .000   .000  9.754   .000   .000
jpl0953g.snx: HART    .110   .000   .000   .128   .000   .000  9.754   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 9.803 M.

jpl0953g.snx: HRAO    .110   .000   .000   .128   .000   .000  9.754   .000   .000
ncl0953g.snx: HRAO    .110   .000   .000   .128   .000   .000   .000   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .081 M.

jpl0953g.snx: KATZ    .069   .000   .000   .068   .000   .000  -.012   .000   .000
mit0953g.snx: KATZ    .078   .000  -.003   .074  -.003  -.001  -.012   .000   .000
   - Unresolvable (no log file)

jpl0953g.snx: MALI    .078   .000   .000   .096   .000   .000   .222   .000   .000
mit0953g.snx: MALI    .110   .000   .000   .128   .000   .000   .170   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .135 M.

jpl0953g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
mit0953g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
ncl0953g.snx: MDVO    .000   .000   .000   .000   .000   .000   .146   .000   .000
   - All 3 wrong. Should be L1/L2 offset both .069 M., eccentricity .146 M.

jpl0953g.snx: NOUM    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
mit0953g.snx: NOUM    .075   .002  -.001   .069  -.001   .002  -.002  -.005   .006
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 0.000 M.

jpl0953g.snx: NYA1    .078   .000   .000   .096   .000   .000  5.216   .000   .000
mit0953g.snx: NYA1    .078   .000   .000   .096   .000   .000   .033   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .000 M.

jpl0953g.snx: TELA    .069   .000   .000   .068   .000   .000   .000   .000   .000
mit0953g.snx: TELA    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
   - Unresolvable (no log file)

jpl0953g.snx: TROM    .078   .000   .000   .096   .000   .000  2.473   .000   .000
mit0953g.snx: TROM    .110   .000   .000   .128   .000   .000  2.334   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity 2.369 M.

jpl0953g.snx: CAGL    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: EBRE    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
jpl0953g.snx: GALA    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: HOFN    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: HOLB    .078   .000   .000   .096   .000   .000   .129   .000   .000
jpl0953g.snx: KOUR    .078   .000   .000   .096   .000   .000   .132   .000   .000
jpl0953g.snx: LPGS    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: MEDI    .110   .000   .000   .128   .000   .000   .146   .000   .000
jpl0953g.snx: NICO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0953g.snx: NYAL    .078   .000   .000   .096   .000   .000  5.216   .004   .001
jpl0953g.snx: SELE    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: SFER    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: SOFI    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: UPAD    .078   .000  -.003   .074  -.003  -.001  1.962   .000   .000
jpl0953g.snx: WSRT    .110   .000   .000   .128   .000   .000   .380   .000   .000
jpl0953g.snx: WUHN    .110   .000   .000   .128   .000   .000  2.320   .000   .000
jpl0953g.snx: YAR1    .078   .000   .000   .096   .000   .000   .073   .000   .000
jpl0953g.snx: ZECK    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0953g.snx: ZIMM    .069   .000   .000   .068   .000   .000   .000   .000   .000

FILE ncl0953g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.

ANTENNA PHASE CENTRE CONFLICTS IN FILE mit0953g.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):
   Lat BOGT MIT-JPL   Lat RCM6 MIT-JPL   Lat EISL MIT-JPL
   Lat BOGT MIT-NCL   Lon NTUS MIT-JPL   Lon FORT MIT-JPL
   Lon FORT MIT-NCL   Hgt AREQ MIT-JPL   Hgt BAHR MIT-JPL
   Hgt WHIT MIT-JPL   Hgt MDO1 MIT-JPL   Hgt AREQ MIT-NCL
   Hgt GOLD MIT-NCL          

57 GLOBAL STATIONS:
   ALBH ALGO ANKR AUCK BRMU CHAT COCO CRO1 DAV1 DGAR
   DRAO GODE GRAZ GUAM HOB2 IRKT KELY KERG KIRU KIT3
   KOKB KOSG KSTU KWJ1 LHAS MAC1 MADR MATE MCM4 METS
   MKEA NLIB NRC1 OHIG ONSA PERT PETR PIE1 POL2 POTS
   REYK SANT SHAO STJO TAEJ TAHI THU1 TIDB TROM TSKB
   USNO USUD VILL WES2 WTZR YAR1 YELL   

38 FIDUCIAL STATIONS:
   ALGO BRMU DAV1 DRAO 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 VILL WES2 WTZR YAR1 YELL  

AVERAGE COORDINATE RMS USING ITRF96:

             57    GLOBAL  STATIONS         38   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.1       0.9       0.6        5.7        6.1        6.0 
Lon        1.5       1.2       1.0        6.9        7.7        7.3 
Hgt        2.8       3.0       1.9       10.7        9.9       10.0 
3D         3.3       3.4       2.2       13.9       14.0       13.8

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

        67    GLOBAL  STATIONS         38   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.072     0.380     0.253      4.257      3.936      2.947

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      -3.7     3.1    22.2     3.2   -15.2     5.0        -0.5      0.1
MIT      -5.2     2.0     9.6     2.1   -11.3     3.3        -0.7      0.1
NCL      -2.3     3.1    20.2     3.4   -11.0     5.1        -0.5      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0953g.snx :
   Stations: BRAZ FAIR MASP

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0953g.snx :
   Stations: BRAZ FAIR

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0953g.snx :
   Stations: BRAZ FAIR HART MASP ZWEN

IERS DOMES NO    JPL    MIT    NCL
============= ====== ====== ======
    42202M005 AREQ A AREQ A AREQ A
              ARE1 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        HART B HARK A
    30302M004               HRAO A
    13407S012 MADR A MADR A MADR A
              MAD2 A              
    31303M002 MAS1 A              
    31303M001 MASP A MAS1 A       
    12309M002 MDVO A        MDVO A
              MDV1 A              
    12309M001        MDVO A       
    10317M001 NYAL A NYA1 A NYAL A
              NYA1 A NYAL 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              
    42005M001        GALA A GALA A
                     GALA B       
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  AOML A  BAHR A  BISH A  CHUR A  COCO A  DGAR A  EBRE A  ELAT A  FLIN 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  GAL1 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  URUM A  USNA A
  USNO A  WHIT A  WSLR A  XIAN A  YAKA A
 
MISSING IERS DOMES NOS AT MIT:
-----------------------------
  MAD2 A  SFER 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  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
  WUHN A  XIAN 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  SOFI A  NOTO A
  MEDI 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
    42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
    30302M004 HRAO A        HRAO A                            
    30302M007 HART A HART B HART B HARK A        HART B       
    30302M002        HART B               HARK A              
    31303M002 MASP A MASP B MASP B MAS1 A        MASP B       
    31303M001                                           MASP A
    12309M002 MDVO A        MDVO B        MDVO A              
    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                            
    40451M123 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
    10317M001        NYAL A NYAL A NYAL A NYAL A NYAL A NYAL A
                                          NYA1 A              
    13407S012               MADR A        MAD2 A MADR A MADR A
    42005M001                      GALA A        GALA B       
 
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
  BISH A  URUM A  RIOG A
 
MISSING IERS DOMES NOS AT JPL:
-----------------------------
  BAHR A  COCO A  DGAR A  KWJ1 A  MAG0 A  MKEA A  NOTO A  NOUM A  PETR A  GALA A
  ZECK A  RCM6 A  USNO A  WSLR A  YAKA A
 
MISSING IERS DOMES NOS AT SIO:
-----------------------------
  MAD2 A  SFER 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  YAKA 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  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]>]