Subject: [IGEXMail-0148] Wk 0987 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 12 Jan 1999 21:10:54

Precedence: bulk

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IGEX Electronic Mail    12-Jan-1999 21:10:54                   Message No 0148
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0987 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0987 (DAYS 340-346, DATES 06-12-98 - 12-12-98)
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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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COX0987N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09877.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
340         104    437389         10002        1.3
341         106    450378         10213        1.3
342         109    469867         10551        1.3
343         111    484036         10747        1.3
344         108    466760         10352        1.3
345         103    437517         10147        1.4
346         101    429860         10066        1.4
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
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     103E104E106E109 110 111 113 116 117 118 120 122
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 340  10   6   6  20  30  15  17  26   5   5   7   4
 341   9   5   4  21  29   8  12  17   6   5   9   3
 342   6   2   5   7  15  10  10  17   5   4   6   5
 343  13   5   3  10  16  12  14  15   4   2   3   6
 344   5   4   3  13  16  12   8  18   5   3   3   4
 345  11   4   6   9  22   9  12  14   5   5   7   5
 346  11   5   5  16  29  29  22  30   6   4   6   6
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 ALL  10   5   5  15  23  15  14  20   5   4   6   5
 -------------------------------------------------------------------------------
 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  PPP  PP    28    59    85
 BIPD 10094M001     7  PPPPPPP     4    10    18
 BORG 12205M004     7  PPPPPPP     3     7    18
 BRUG 13101M005     6  PPPPPP      5    16    40
 DLRA 14208M002     7  PPPPPPP     3     9    14
 GODZ               7  PPPPPPP    14    13    23
 HERP 13212M009     7  PPPPPPP    11    13    32
 IRKZ               7  PPPPPPP     5     7    10
 KHAB               7  PPPPPPP     8     6     9
 KR0G 10422M001     7  PPPPPPP     6     3     7
 LDS1 13215M001     7  PPPPPPP     5     8    15
 LRBA 10093M001     6   PPPPPP     2     7     5
 METZ 10503M005     6  PPPPPP      5     4     4
 MTKA 21741S002     7  PPPPPPP     9     7     7
 NPLC 13234M001     7  PPPPPPP    53    46    78
 OS0G 10402M004     7  PPPPPPP     4     5     6
 REYZ 10202M003     5   PPPP P     6     5    15
 STRR 50119M002     7  PPPPPPP    35    78    43   *)
 THU2 43001M002     7  PPPPPPP     6     8    10
 TSKA 21730M003     5   PPPPP     10     6    10
 VSLD 13502M008     6  P PPPPP     3     9    10
 YARR 50107M006     7  PPPPPPP    36    81    32   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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  *) Very isolated sites
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