Subject: [IGEXMail-0143] Wk 0986 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 07 Jan 1999 18:17:20

Precedence: bulk

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IGEX Electronic Mail    07-Jan-1999 18:17:20                   Message No 0143
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0986 CODE IGEX Analysis Report

Author: M. Rothacher
 
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CODE IGEX REPORT GPS WEEK 0986 (DAYS 333-339, DATES 29-11-98 - 05-12-98)
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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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COX0986N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09867.SUM   THIS TEXT FILE                                                  
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------------------------------------------------------                         
FIVE DAY SOLUTION STATISTICS:                                                  
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
333         101    477903         10694        1.3
334         100    459230         10549        1.3
335         103    466173         10886        1.3
336         104    461719         10815        1.3
337         102    442354         10387        1.3
338         100    415934          9738        1.3
339         102    428215         10053        1.3
------------------------------------------------------                         

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 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)
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     103E104E106E109 110 111 113 115 116 117 118 120 122
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 333   7  10  14  10   8  12   6   9   8   6  10   6   4
 334  11   6  10  10  14  12  11   9  10   6   4   4   5
 335   9   6   9   8  12  10   8   5   9   7   3   4   4
 336   8   8  11   7  10   6   7   9   8   6   4   4   5
 337   6   9  10   8   9  15  10  15   6   6   7   4   7
 338   7   5   9   5   9  12  11  --  12   7   3   4   7
 339   5   6   8   8  28  11  11  --  17   8   5   4   6
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 ALL   8   7  11   8  15  11  10  10  11   7   6   4   6
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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.

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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    24    50    55
 BIPD 10094M001     7  PPPPPPP     2     8    18
 BORG 12205M004     7  PPPPPPP     4     9    13
 BRUG 13101M005     7  PPPPPPP    15    21    59
 DLRA 14208M002     7  PPPPPPP     3     4    14
 GODZ               6  PPP PPP     8     8     6
 HERP 13212M009     7  PPPPPPP    11    34    44
 IRKZ               5   PPP PP     9    11     7
 KHAB               7  PPPPPPP     9    11    11
 KR0G 10422M001     7  PPPPPPP     5     4     9
 LDS1 13215M001     7  PPPPPPP     5     9    15
 LRBA 10093M001     6  PPPPPP      2     4     6
 METZ 10503M005     5  PPP P P     4     4     7
 MTKA 21741S002     3      PPP    11     6     5
 NPLC 13234M001     4     PPPP    32    52    86
 OS0G 10402M004     7  PPPPPPP     3     4     5
 REYZ 10202M003     6   PPPPPP     5     5    11
 SL1X 40446S001     3  PPP         6     8     4
 STRR 50119M002     4  PPPP       14    76    41   *)
 THU2 43001M002     7  PPPPPPP     6     8     9
 TSKA 21730M003     5  P PPPP      9    11    10
 VSLD 13502M008     7  PPPPPPP     3     3    13
 YARR 50107M006     5  PPPPP      41    57    80   *)
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
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 *) Very isolated sites
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