Subject: [IGEXMail-0256] Wk 0994 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 25 Mar 1999 16:29:04

Precedence: bulk

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IGEX Electronic Mail    25-Mar-1999 16:29:04                   Message No 0256
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0994 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0994 (DAYS 024-030, DATES 24-01-99 - 30-01-99)
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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.                               
                                                                               
- Site ZIMZ (Zimmerwald, Switzerland) and site YARR (Yaragadee, Australia)     
  were constrained to their ITRF96 coordinates.                                

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FILES SENT TO GLOBAL DATA CENTERS:                                             
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COX0994N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09947.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
 24         110    411793         10365        1.4
 25         108    412816         10253        1.4
 26         109    422296         10392        1.4
 27         113    443645         11039        1.4
 28         118    472027         11723        1.4
 29         120    490266         12256        1.4
 30         122    497343         12700        1.4
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
 -------------------------------------------------------------------------------
     103 104 106 107 108 109 110 111 113 116 117 120 122
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  24   5   9  13  --  --  12  14   7   6  19   8   7   6
  25   5   7  17  --  --   4  17   7   5  23   7   5   4
  26   4   6  10  --  --   6  17  12   6   6   8   5   9
  27   4   4  12  --  --   5  18   7   6  12   6   5   9
  28   7   6   9  --  --   9  12   8   8   5   6   7  12
  29   3   3  10  18   7   7  24   7   5   9   9   6  11
  30   6   6   8  18   8   5  34   6   5   8   7   7  20
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 ALL   5   6  12  18   7   7  21   8   6  13   7   6  11
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 Remarks: - These RMS values may be too optimistic, because we fit the middle 
            days of 5-day arcs with a 7-day arc.   

          - Starting from DOY 029 the orbits for the newly launched GLONASS
            satellites with slot numbers 7 and 8 were determined.

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 WEEKLY COORDINATE COMPARISON OF 1-DAY (Z1) SOLUTIONS                           
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 TOTAL NUMBER OF STATIONS:    26
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
 -------------------------------------------------------------------------------
 3SNA 49918S001     7  PPPPPPP   296   117   336
 BIPD 10094M001     7  PPPPPPP     8     9    22
 BORG 12205M004     7  PPPPPPP     6     8    19
 BRUG 13101M005     7  PPPPPPP     7    10    18
 CRAR 66001M004     7  PPPPPPP    13    16    16
 CSIR 30310M001     4    P PPP    35    77   137
 DLRA 14208M002     2       PP     6     2    21
 HERP 13212M009     7  PPPPPPP    25    32    56
 IRKZ               7  PPPPPPP     9    11     9
 KHAB               7  PPPPPPP    12     6     7
 KR0G 10422M001     3      PPP     4     3    13
 LDS1 13215M001     7  PPPPPPP     6    15    26
 LINR               6  PPPP PP     5    11    26
 LRBA 10093M001     7  PPPPPPP     4     4     9
 MDVZ               7  PPPPPPP     5     7     9
 METZ 10503M005     7  PPPPPPP     4     2    13
 NPLC 13234M001     7  PPPPPPP    69    43    72
 OS0G 10402M004     6  P PPPPP     5     3    10
 REUN 97401M003     7  PPPPPPP     8    17    20
 STRR 50119M002     7  PPPPPPP     4     9     8
 SUNM 50143M001     7  PPPPPPP     5    10    10
 THU2 43001M002     6   PPPPPP     7     9    14
 TSKA 21730M003     7  PPPPPPP    11     5    17
 VSLD 13502M008     6  P PPPPP     4     8    23
 YARR 50107M006     7  PPPPPPP     -     -     -   FIXED
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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