Subject: [IGEXMail-0217] Wk 0990 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 19 Feb 1999 16:54:15

Precedence: bulk

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IGEX Electronic Mail    19-Feb-1999 16:54:15                   Message No 0217
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0990 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0990 (DAYS 361-002, DATES 27-12-98 - 02-01-99)
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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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COX0990N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09907.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
361          88    415837          9969        1.4
362          89    413709         10066        1.4
363          89    414707         10116        1.4
364          93    427072         10290        1.4
365          99    452808         10768        1.4
  1         102    454789         10688        1.4
  2         103    443573         10529        1.4
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
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     103 104 106 109 110 111 113 116 117E120E122E
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 361   6   4  13  15  34  12  13   8   5   5   4
 362   6   7  17  14  15   7  14   9   6   9   6
 363   4   7  12   7  22   9  10   8   6   6   5
 364   5   9  13   6  18  10   9   8   5   7   4
 365   4   5  12   8  26   6   7  14   7   6   5
   1   5   6  12   9  30   9  11   8   6   7   4
   2   6   5  14  12  27  12  11  22   7   6   4
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 ALL   5   6  13  11  25  10  11  12   6   7   5
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 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:    25
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
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 BIPD 10094M001     4  P PPP      12     8    17
 BORG 12205M004     5  PP PPP      8     9    12
 BRUG 13101M005     7  PPPPPPP     5     6    10
 CSIR 30310M001     2    P   P     3   147   126   *)
 GODZ               6  PPPPPP      5    31    10
 HERP 13212M009     6  PPPPP P    11    33    46
 IRKZ               6  PPPP PP     8    19    18
 KHAB               7  PPPPPPP    11    18    10
 KR0G 10422M001     7  PPPPPPP     7     7     8
 LDS1 13215M001     7  PPPPPPP     5    10    27
 LRBA 10093M001     7  PPPPPPP     4     4     7
 MDVZ               4     PPPP     2     4    13
 METZ 10503M005     5    PPPPP     4     5     9
 MTKA 21741S002     7  PPPPPPP    13    21    11
 NPLC 13234M001     7  PPPPPPP    31    45    99
 OS0G 10402M004     7  PPPPPPP     5     5     8
 REUN 97401M003     5    PPPPP    23    93    39
 REYZ 10202M003     7  PPPPPPP     6     5    11
 SL1X 40446S001     4  P PPP       4     9    12
 STRR 50119M002     2       PP    24    14    39   *)
 THU2 43001M002     6  PPPP PP     7     8     8
 TSKA 21730M003     2       PP     6     2    15
 VSLD 13502M008     5    PPPPP     2     7    17
 YARR 50107M006     4  PP   PP    26    87    58   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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 *) Very isolated sites                                                       
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