Subject: [IGEXMail-0203] Wk 0989 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 11 Feb 1999 19:57:44

Precedence: bulk

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IGEX Electronic Mail    11-Feb-1999 19:57:44                   Message No 0203
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0989 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0989 (DAYS 354-360, DATES 20-12-98 - 26-12-98)
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Submitted by: Astronomical Institute, University of Berne, Switzerland
              Products available through anonymous ftp using:
              ftp ubeclu.unibe.ch  -or-  ftp 130.92.6.17
              after login: cd aiub$ftp; cd code
 
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PROCESSING STRATEGY:                                                           
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- The analysis was done by fixing the GPS orbits and Earth rotation parameters 
  to the CODE final GPS solution.                                              
                                                                               
- The orbital parameters for the GLONASS satellites were estimated using double
  difference phase observations (including double differences between GLONASS  
  and GPS satellites). Six initial conditions and nine radiation pressure para-
  meters per satellite were determined. No pseudo-stochastic pulses have been  
  introduced up to now.                                                        
                                                                               
- So far only receivers providing dual frequency GPS and GLONASS or dual fre-  
  quency GLONASS measurements were included in the solution.                   
                                                                               
- The daily orbit results stem from the middle day of a 5-day arc.             
                                                                               
- The satellite clock values included in the precise orbit files are broadcast 
  clock values for the GLONASS satellites (no improvement done so far) and     
  precise CODE estimates for the GPS satellites.                               
                                                                               
- At present only the site ZIMZ (Zimmerwald, Switzerland) was constrained to   
  its ITRF96 coordinates.                                                      

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FILES SENT TO GLOBAL DATA CENTERS:                                             
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COX0989N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09897.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
354          95    449968          9364        1.3
355          97    459687          9768        1.3
356         100    470419         10327        1.3
357         101    481202         10533        1.3
358         100    471286         10633        1.3
359          96    461340         10538        1.3
360          90    431062         10072        1.4
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
 -------------------------------------------------------------------------------
     103 104 106 109 110 111 113 116 117E120E122E
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 354   7   9   6  14  23  10   9  25   5   8   6
 355   4  10   5  11  39  11  13  16   7   7   8
 356   5   6   5   7  20   8   6  12   6   9   6
 357   3   8   6  11  25   5   8  11   6   5   6
 358   6   7   7  12  21  12   9  17   5   7   6
 359   3   5   7  11  24  12   8  16   7   5   5
 360   7   6   9   8  26   6  10  16   7   6   6
 -------------------------------------------------------------------------------
 ALL   5   7   7  11  26   9   9  17   6   7   6
 -------------------------------------------------------------------------------
 Remark: These RMS values may be too optimistic, because we fit the middle days 
         of 5-day arcs with a 7-day arc.                                        

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 WEEKLY COORDINATE COMPARISON OF 1-DAY (Z1) SOLUTIONS                           
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 TOTAL NUMBER OF STATIONS:    23
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
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 3SNA 49918S001     5  PPPPP      48    63    20
 BIPD 10094M001     7  PPPPPPP     5    13    21
 BORG 12205M004     7  PPPPPPP     3    10    14
 BRUG 13101M005     7  PPPPPPP     6    17    44
 GODZ               7  PPPPPPP     8    11    10
 HERP 13212M009     7  PPPPPPP    18    17    45
 IRKZ               7  PPPPPPP     6     7    11
 KHAB               7  PPPPPPP     6    10     7
 KR0G 10422M001     7  PPPPPPP     4     2     9
 LDS1 13215M001     7  PPPPPPP     7     9    16
 LRBA 10093M001     7  PPPPPPP     4     6     6
 METZ 10503M005     5  PPPPP       4     3     6
 MTKA 21741S002     7  PPPPPPP     4    11     9
 NPLC 13234M001     7  PPPPPPP    14    31    65
 OS0G 10402M004     7  PPPPPPP     2     4     8
 REYZ 10202M003     7  PPPPPPP     5     5    13
 SL1X 40446S001     7  PPPPPPP     7    11    12
 STRR 50119M002     1    P         -     -     -   *)
 THU2 43001M002     5    PPPPP     5     6    19
 TSKA 21730M003     5   PPPPP      4    11     7
 VSLD 13502M008     7  PPPPPPP     4     6    17
 YARR 50107M006     4     PPPP    26    17    35   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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 # Coordinate Estimates:   143    11    15    22
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 *) Very isolated sites                                                       
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