Subject: [IGEXMail-0298] Wk 0996 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 16 Apr 1999 15:12:50

Precedence: bulk

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IGEX Electronic Mail    16-Apr-1999 15:12:50                   Message No 0298
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0996 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0996 (DAYS 038-044, DATES 07-02-99 - 13-02-99)
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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.                               
                                                                               
- The following sites are constrained to their ITRF96 coordinates:

      - KR0G 10422M001 (Kiruna, Sweden)
      - METZ 10503M005 (Metsahovi, Finland)
      - OS0G 10402M004 (Onsala, Sweden)
      - YARR 50107M006 (Yaragadee, Australia)
      - ZIMZ 14001M005 (Zimmerwald, Switzerland)

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FILES SENT TO GLOBAL DATA CENTERS:                                             
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COX0996N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09967.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
 38         108    452983         11286        1.3
 39         113    489970         11609        1.3
 40         118    525552         12142        1.3
 41         123    564682         12420        1.3
 42         128    605590         12999        1.2
 43         127    605637         12981        1.2
 44         125    610084         13161        1.2
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
 -------------------------------------------------------------------------------
     103 104 106 107 108 109 110 111 113 116 117 118 120 122
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  38   5   5   8   5   5   6  10   8   8   9   8   7   4   4
  39   6   8  15   7   5   5   5   7   7   5  13   7   7   5
  40   5   5   9   9   5   4   8   7   3   7   6   5   4   4
  41   5   5  10   7   6   6   9   7   7   7   9   4   6   4
  42   6   6  10   9   8   6   7   7   6   7   7   6   5   7
  43   3   5   7   6   4   6   8   3   3   4   8   4   4   4
  44   6   5   7   9   9   6  12  12   7   4   8   5   6   7
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 ALL   5   5  10   7   6   6   9   8   6   6   9   5   5   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:    28
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
 -------------------------------------------------------------------------------
 3SNA 49918S001     7  PPPPPPP    30    74    48
 BIPD 10094M001     6  PPPP PP     8    30    30
 BORG 12205M004     7  PPPPPPP     4     4    16
 BRUG 13101M005     7  PPPPPPP     6    11    17
 DLRA 14208M002     7  PPPPPPP     3     9    19
 HERP 13212M009     7  PPPPPPP    21    32    89
 IRKZ               7  PPPPPPP     2     6     6
 KHAB               7  PPPPPPP     2     9     5
 KR0G 10422M001     7  PPPPPPP     -     -     -   CONSTRAINED
 LDS1 13215M001     6   PPPPPP     9    13    15
 LINR               6  PPPPP P     5    53    37
 LRBA 10093M001     7  PPPPPPP     7    10     3
 MAGD               5    PPPPP     2     5     8
 MDVZ               7  PPPPPPP     1     1     6
 METZ 10503M005     5  P  PPPP     -     -     -   CONSTRAINED
 NPLC 13234M001     6   PPPPPP    51    93   106
 OS0G 10402M004     7  PPPPPPP     -     -     -   CONSTRAINED
 REUN 97401M003     3     P PP    16    36    24
 STRR 50119M002     7  PPPPPPP    29    66    70
 SUNM 50143M001     7  PPPPPPP    25    69    62
 THU2 43001M002     5  PPPPP       5     6     7
 TSKA 21730M003     7  PPPPPPP     4    13     6
 VSLD 13502M008     7  PPPPPPP     3     6     9
 WTZZ 14201M014     5    PPPPP     2     2     4
 YAKT               5    PPPPP     2     6     6
 YARR 50107M006     4  PPPP        -     -     -   CONSTRAINED
 ZIMJ 14001M006     5    PPPPP     3     2     4
 ZIMZ 14001M005     5    PPPPP     -     -     -   CONSTRAINED
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