Subject: [IGEXMail-0164] Wk 0988 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 21 Jan 1999 17:08:30

Precedence: bulk

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IGEX Electronic Mail    21-Jan-1999 17:08:30                   Message No 0164
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0988 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0988 (DAYS 347-353, DATES 13-12-98 - 19-12-98)
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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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COX0988N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09887.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
347         100    414570          9849        1.4
348          99    431620         10140        1.4
349         101    450175         10381        1.3
350         102    467526         10217        1.3
351         100    459955          9953        1.3
352          97    459285          9791        1.3
353          95    453096          9409        1.3
------------------------------------------------------                         

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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 117E120E122E
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 347  12  12   6  44  34  22  35  27  13  10   7
 348  12   8  13  34  46  15  49  30   8   3   7
 349   7  13   5  38  41   8  32  48   9   6   5
 350   8   9   5  10  34   8  31  29  10   5   5
 351   9   9   6  27  52  12  39  19   6   5   4
 352   5  10   5  32  43   9  28  49   5   5   5
 353   7   8   7  35  32  29  20  54   7   5   9
 ---------------------------------------------------------------------------
 ALL   9  10   7  33  41  16  35  39   9   6   6
 ---------------------------------------------------------------------------
 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     7  PPPPPPP    34    25    47
 BIPD 10094M001     6  P PPPPP     3     6    26
 BORG 12205M004     7  PPPPPPP     5     4    17
 BRUG 13101M005     6   PPPPPP     3     6    16
 GODZ               7  PPPPPPP     7    10     9
 HERP 13212M009     7  PPPPPPP     9    37    66
 IRKZ               7  PPPPPPP     7     5     6
 KHAB               7  PPPPPPP     8     4    13
 KR0G 10422M001     7  PPPPPPP     4     5     8
 LDS1 13215M001     6  PPPPP P     5    10    26
 LRBA 10093M001     7  PPPPPPP     2     9     7
 METZ 10503M005     7  PPPPPPP     4     4     9
 MTKA 21741S002     6   PPPPPP     9     4     9
 NPLC 13234M001     7  PPPPPPP    51    49    44
 OS0G 10402M004     7  PPPPPPP     3     5     6
 REYZ 10202M003     7  PPPPPPP     4     3     9
 SL1X 40446S001     5    PPPPP     8    12    12
 STRR 50119M002     5  PPPPP      36   257    91   *)
 THU2 43001M002     6  PPPPPP      4     4    13
 TSKA 21730M003     5   PPPPP      8     5     5
 VSLD 13502M008     7  PPPPPPP     4     5     8
 YARR 50107M006     2  PP         64    92    18   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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  *) Very isolated sites
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