Subject: [IGEXMail-0286] Wk 0995 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 13 Apr 1999 12:53:02

Precedence: bulk

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IGEX Electronic Mail    13-Apr-1999 12:53:02                   Message No 0286
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0995 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0995 (DAYS 031-037, DATES 31-01-99 - 06-02-99)
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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.                               
                                                                               
- For the computation of the final orbits site ZIMZ (Zimmerwald, Switzerland),
  site OS0G (Onsala, Sweden), and site YARR (Yaragadee, Australia) were fixed
  to their ITRF96 coordinates.                                

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FILES SENT TO GLOBAL DATA CENTERS:                                             
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COX0995N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09957.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
 31         122    490680         12854        1.4
 32         118    476819         12714        1.4
 33         113    453649         12182        1.4
 34         110    436975         11819        1.4
 35         106    432756         11284        1.4
 36         103    416986         10975        1.4
 37         102    410151         10642        1.4
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
 -------------------------------------------------------------------------------
     103 104 106 107 108 109 110 111 113 116 117 118 120 122
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  31   6   5   9   7   5   7  24  43   5   7   7  --   5  19
  32   6   9  11   9   7   6  11  41   9   7   8  --   8   8
  33   3   5   5   3   7   3   6  41   5   8   3  --   6   4
  34   7   9   9   9   9   6   6   9   6   6   5  --   8  10
  35   4   4   5   4   6   4   5  40   6   5   5   4   6   6
  36   9   8   8   7   8  13  10  33   8  10   5   6   9   8
  37   4   6   5   5   6   6  12  47   7   6   8   4   5   5
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 ALL   6   7   8   7   7   7  12  38   7   7   6   5   7  10
 -------------------------------------------------------------------------------
 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:    25
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                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
 -------------------------------------------------------------------------------
 3SNA 49918S001     5  PPP  PP    28    84    48
 BIPD 10094M001     7  PPPPPPP    15     9    37
 BORG 12205M004     6  PP PPPP    13     8    37
 BRUG 13101M005     7  PPPPPPP    13     8    32
 CRAR 66001M004     7  PPPPPPP    10     7    20
 DLRA 14208M002     5  PPPPP       6     7    36
 HERP 13212M009     7  PPPPPPP    24    24    32
 IRKZ               7  PPPPPPP    10    16    12
 KHAB               7  PPPPPPP    16    14    10
 KR0G 10422M001     7  PPPPPPP     9     7    20
 LDS1 13215M001     7  PPPPPPP    15    10    21
 LINR               3  PPP         6    22    38
 LRBA 10093M001     7  PPPPPPP    13     8    23
 MDVZ               7  PPPPPPP     9    11    26
 METZ 10503M005     4  PP   PP    10     8    30
 NPLC 13234M001     6  PPPPPP     81    82   138
 OS0G 10402M004     6  P PPPPP    10     6    23
 REUN 97401M003     4  PPPP       12    35    20
 STRR 50119M002     7  PPPPPPP     7     8     7
 SUNM 50143M001     7  PPPPPPP     7     9    25
 THU2 43001M002     7  PPPPPPP    11    11    14
 TSKA 21730M003     7  PPPPPPP    17    15     6
 VSLD 13502M008     6  PPP PPP    13     5    30
 YARR 50107M006     7  PPPPPPP     -     -     -   FIXED
 ZIMZ 14001M005     5  PPPP P      -     -     -   FIXED
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