Subject: [IGEXMail-0132] Wk 0984 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 24 Dec 1998 13:22:47

Precedence: bulk

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IGEX Electronic Mail    24-Dec-1998 13:22:47                   Message No 0132
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0984 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0984 (DAYS 319-325, DATES 15-11-98 - 21-11-98)
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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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COX0984N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09847.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
THREE DAY SOLUTION STATISTICS:                                                 
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
319          73    305184          7415        1.2
320          73    298068          7118        1.2
321          72    291446          6968        1.2
322          73    288921          7151        1.2
323          77    308353          7588        1.2
324          78    320760          7665        1.2
325          79    337087          8127        1.3
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
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     103E104E106E109 110 111 113 115 116 117 118 120 122
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 319  13   6   9  17  13  18   8  11  22   6   7   5   7
 320  12   7   6  15  17  13   4   7   7   4   4   8   4
 321   8   4   3   8  15  12  18   5   9   4   4   4   6
 322  10   8  11   8   8  14  13  10   9   9   9   8   9
 323  10   9   6   7  15   7   6   9  13   6   7   6   5
 324  10   7   8  10  12   9  19   6  11   6  10   8   4
 325  13  11  10   9  10   9   7  12  13   5   5   6   7
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 ALL  11   8   8  11  13  12  12   9  13   6   7   7   6
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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. SLR residuals show an RMS of 17 cm.
                                                                                
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 WEEKLY COORDINATE COMPARISON OF 1-DAY (Z1) SOLUTIONS                           
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 TOTAL NUMBER OF STATIONS:    20
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
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 3SNA 49918S001     7  PPPPPPP    26    40    61
 BIPD 10094M001     7  PPPPPPP     7     6    29
 BORG 12205M004     6  P PPPPP     7     7    17
 BRUG 13101M005     7  PPPPPPP     6     6    12
 DLRA 14208M002     6  PPPP PP     7     7    11
 GODZ               7  PPPPPPP     2     6     6
 HERP 13212M009     5    PPPPP    14    35    57
 IRKZ               7  PPPPPPP     6     7     9
 KHAB               1        P     -     -     -
 KR0G 10422M001     7  PPPPPPP     3     4     5
 LDS1 13215M001     7  PPPPPPP     6     5    21
 LRBA 10093M001     4  P P  PP     3     1     6
 METZ 10503M005     2  PP          4     4     6
 MTKA 21741S002     4     PPPP     9     3    10
 OS0G 10402M004     7  PPPPPPP     4     2     4
 REYZ 10202M003     2       PP     1     1     5
 SL1X 40446S001     7  PPPPPPP     2     6     6
 VSLD 13502M008     7  PPPPPPP     6     7    27
 YARR 50107M006     5  PPPPP      66    38    71
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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 # Coordinate Estimates:   104    15    15    27
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