Subject: [IGEXMail-0134] Wk 0985 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 27 Dec 1998 19:15:23

Precedence: bulk

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IGEX Electronic Mail    27-Dec-1998 19:15:23                   Message No 0134
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0985 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0985 (DAYS 326-332, DATES 22-11-98 - 28-11-98)
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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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COX0985N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09857.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
THREE DAY SOLUTION STATISTICS:                                                 
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
326          84    366586          8831        1.3
327          87    384764          9287        1.3
328          91    409405          9640        1.3
329          96    442879         10207        1.3
330          98    459766         10342        1.3
331          98    463821         10206        1.3
332         100    480333         10408        1.3
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
 -------------------------------------------------------------------------------
     103E104E106E109 110 111 113 115 116 117 118 120 122
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 326   6   4   6   6  13   7   5  18  12   7   5   5   3
 327   7   4   3   6  23   9   6   5   5   6   4   6   3
 328   5   5   5  11  12   4   4   4   6   6   2   5   5
 329   3   4   3   4  19   5   5   4   4   4   4   3   4
 330   7   4   7   5  16   4   3   5   4   5   6   4   4
 331   7   4   9   7  24   6   7   5   3   3   6   4   5
 332   7   6   8   7  12   7   5   6   6   3  10   4   5
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 ALL   6   4   6   7  18   6   5   8   6   5   6   5   4
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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. The improvement made compared the
         previous week is mainly due to new sites that we could introduce.

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 WEEKLY COORDINATE COMPARISON OF 1-DAY (Z1) SOLUTIONS                           
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 TOTAL NUMBER OF STATIONS:    24
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
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 3SNA 49918S001     7  PPPPPPP    15    24    48
 BIPD 10094M001     6  PPPP PP     6    12    14
 BORG 12205M004     5  P  PPPP     4     5    11
 BRUG 13101M005     7  PPPPPPP    10     8    15
 DLRA 14208M002     7  PPPPPPP     3     7     8
 GODZ               7  PPPPPPP     3     4     7
 HERP 13212M009     6  PPPPP      15    14    41
 IRKZ               6  PPPPPP      6     2    12
 KHAB               6  PP PPPP    12     7     8
 KR0G 10422M001     7  PPPPPPP     3     4     6
 LDS1 13215M001     7  PPPPPPP     4    11    23
 LRBA 10093M001     7  PPPPPPP     1     6     2
 METZ 10503M005     2      PP      2     1     5
 MTKA 21741S002     2  PP          5     1    11
 OS0G 10402M004     7  PPPPPPP     2     5     6
 REYZ 10202M003     6   PPPPPP     3     3     4
 SANG 41705M005     3    P P P   195   437   385   *)
 SL1X 40446S001     7  PPPPPPP     3     6     8
 STRR 50119M002     5    PPPPP    55    67    65   *)
 THU2 43001M002     5    PPPPP     2     4     9
 TSKA 21730M003     4    P PPP     8    10     1
 VSLD 13502M008     6  PPPPPP      4     5     3
 YARR 50107M006     5    PPPPP    53    47    76   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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 # Coordinate Estimates:   136    29    55    61
 *) Very isolated sites
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