Subject: [IGSREPORT-5010] Wk 0952 G-SINEX Comparisons
From: AC Coordinator / NRCan GSDivision
Date: Tue, 16 Jun 1998 9:39:15 PDT

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IGS Electronic Report    Tue Jun 16  9:39:15 PDT 1998      Message Number 5010
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0952 G-SINEX Comparisons

Subject: Wk 0952 G-SINEX Comparisons

Comparison of GNAAC Combined SINEX Solutions - Week 0952   
(APR 5, 1998 - APR 11, 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:
   mit0952g.snx at cddis.gsfc.nasa.gov
   jpl0952g.snx at cddis.gsfc.nasa.gov
   ncl0952g.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))

jpl0952g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0952g.snx: BARB    .110   .000   .000   .128   .000   .000   .000   .000   .000
ncl0952g.snx: BARB    .000   .000   .000   .000   .000   .000   .000   .000   .000
   - Unresolvable (no log file)

jpl0952g.snx: BISH    .075   .002  -.001   .069  -.001   .002   .046   .000   .000
mit0952g.snx: BISH    .078   .000  -.003   .074  -.003  -.001   .046   .000   .000
   - Unresolvable (no log file)

jpl0952g.snx: ELAT    .069   .000   .000   .068   .000   .000  -.011   .000   .000
mit0952g.snx: ELAT    .078   .000  -.003   .074  -.003  -.001  -.011   .000   .000
   - Unresolvable (no log file)

jpl0952g.snx: KATZ    .069   .000   .000   .068   .000   .000  -.012   .000   .000
mit0952g.snx: KATZ    .078   .000  -.003   .074  -.003  -.001  -.012   .000   .000
   - Unresolvable (no log file)

jpl0952g.snx: TELA    .069   .000   .000   .068   .000   .000   .000   .000   .000
mit0952g.snx: TELA    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
   - Unresolvable (no log file)

jpl0952g.snx: HARK    .110   .000   .000   .128   .000   .000  9.754   .000   .000
jpl0952g.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.

jpl0952g.snx: MALI    .078   .000   .000   .096   .000   .000   .222   .000   .000
mit0952g.snx: MALI    .110   .000   .000   .128   .000   .000   .170   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .135 M.

jpl0952g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
mit0952g.snx: MDVO    .078   .000  -.003   .074  -.003  -.001   .146   .000   .000
ncl0952g.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.

jpl0952g.snx: MEDI    .110   .000   .000   .128   .000   .000   .146   .000   .000
mit0952g.snx: MEDI    .110   .000   .000   .128   .000   .000  -.146   .000   .000
   - Both wrong. Should be L1/L2 offset .110, .128 M., eccentricity .000 M.

jpl0952g.snx: NOUM    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
mit0952g.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.

jpl0952g.snx: TROM    .078   .000   .000   .096   .000   .000  2.473   .000   .000
mit0952g.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.

jpl0952g.snx: CAGL    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0952g.snx: CICE    .110   .000   .000   .128   .000   .000   .083   .000   .000
jpl0952g.snx: EBRE    .078   .000  -.003   .074  -.003  -.001   .000   .000   .000
jpl0952g.snx: GALA    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: HOFN    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: HRAO    .110   .000   .000   .128   .000   .000  9.754   .000   .000
jpl0952g.snx: KOUR    .078   .000   .000   .096   .000   .000   .132   .000   .000
jpl0952g.snx: LPGS    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: NICO    .110   .000   .000   .128   .000   .000   .000   .000   .000
mit0952g.snx: NYAL    .078   .000   .000   .096   .000   .000  5.216   .004   .001
jpl0952g.snx: SELE    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: SFER    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: SOFI    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: UPAD    .078   .000  -.003   .074  -.003  -.001  1.962   .000   .000 
jpl0952g.snx: WSRT    .110   .000   .000   .128   .000   .000   .380   .000   .000
jpl0952g.snx: WUHN    .110   .000   .000   .128   .000   .000  2.320   .000   .000
jpl0952g.snx: YAR1    .078   .000   .000   .096   .000   .000   .073   .000   .000
jpl0952g.snx: ZECK    .110   .000   .000   .128   .000   .000   .000   .000   .000
jpl0952g.snx: ZIMM    .069   .000   .000   .068   .000   .000   .000   .000   .000

FILE ncl0952g.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 MCM4 MIT-JPL   Lon TAHI MIT-JPL
   Lon DGAR MIT-JPL   Lon SANT MIT-JPL   Lon TAHI MIT-NCL
   Lon SANT MIT-NCL   Lon AREQ MIT-NCL   Hgt NTUS MIT-JPL
   Hgt COCO MIT-JPL   Hgt AREQ MIT-JPL   Hgt DGAR MIT-JPL
   Hgt NTUS MIT-NCL   Hgt AREQ MIT-NCL     

60 GLOBAL STATIONS:
   ALBH ALGO ANKR ASC1 AUCK BAHR BOGT BRMU CAS1 CHAT
   CRO1 DAV1 DRAO EISL FAIR FORT GODE GOLD GRAZ GUAM
   HOB2 IRKT KELY KERG KIRU KIT3 KOKB KOSG KSTU KWJ1
   LHAS MAC1 MADR MAG0 MATE MDO1 MKEA NLIB NRC1 ONSA
   PERT PETR PIE1 POL2 POTS REYK SHAO STJO TAEJ TIDB
   TROM TSKB USNO USUD WES2 WHIT WTZR YAR1 YELL ZWEN

37 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 ONSA PERT PIE1 POTS SANT SHAO TIDB
   TROM TSKB WES2 WTZR YAR1 YELL ZWEN   

AVERAGE COORDINATE RMS USING ITRF96:

             60    GLOBAL  STATIONS         37   FIDUCIAL   STATIONS
        MIT-JPL   MIT-NCL   JPL-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
           (mm)      (mm)      (mm)       (mm)       (mm)       (mm)
        -------   -------   ------- ---------- ---------- ----------
Lat        1.0       0.9       0.5        5.3        5.5        5.6 
Lon        1.3       1.0       0.8        5.8        6.4        6.1 
Hgt        2.0       2.0       1.3        9.5        9.3        9.2 
3D         2.6       2.4       1.6       12.3       12.5       12.3

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

        68    GLOBAL  STATIONS         37   FIDUCIAL   STATIONS
   JPL-NCL   MIT-JPL   MIT-NCL MIT-ITRF96 JPL-ITRF96 NCL-ITRF96
   -------   -------   ------- ---------- ---------- ----------
     0.043     0.216     0.142      3.253      3.738      2.600

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     -10.8     3.1    19.2     3.1   -15.8     5.0        -0.6      0.1
MIT      -7.8     2.4    11.9     2.5   -10.1     3.7        -0.5      0.1
NCL      -8.0     3.1    17.7     3.4    -9.6     5.1        -0.4      0.2

REMARKS:

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0952g.snx :
   Stations: BRAZ MASP OHIG VILL

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0952g.snx :
   Stations: BRAZ OHIG VILL

THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0952g.snx :
   Stations: BRAZ HART MASP OHIG THU1 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        HART B HARK A
    30302M004               HRAO A
    22306M001 IISC A              
    22306M002        IISC A       
    13407S012 MADR A MADR A MADR A
              MAD2 A              
    31303M002 MAS1 A              
    31303M001 MASP A MAS1 A       
    12309M002 MDVO A        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  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
  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  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
  YAKZ A  YAKA A  WUHN A  XIAN A  NTUS A  COCO A  KSTU A  SELE A  BISH A  DGAR A
  BAHR 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
============= ====== ====== ====== ====== ====== ====== ======
    30302M004 HRAO A        HRAO A                            
    30302M007 HART A HART B HART B HARK A        HART B       
    30302M002        HART B               HARK 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
    42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
    12309M002 MDVO A                      MDVO A              
    12309M001                                           MDVO 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
    50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 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  COCO A  DGAR A  KWJ1 A  MAG0 A  MKEA A  NOTO A  PETR A  NICO A
  GALA A  ZECK A  RCM6 A  USNO A  WSLR A
 
MISSING IERS DOMES NOS AT NOA:
-----------------------------
  MKEA 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  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]>]