Subject: [IGEXMail-0084] Wk 0981 CODE IGEX Analysis Report
From: [email-masked] (D. Ineichen)
Date: 20 Nov 1998 16:47:14

Precedence: bulk

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IGEX Electronic Mail    20-Nov-1998 16:47:14                   Message No 0084
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Author: [email-masked] (D. Ineichen)
Subject: Wk 0981 CODE IGEX Analysis Report

Author: M. Rothacher
 
Dear Colleagues,

since our IGEXMAIL No.75 from Nov. 16, 1998 was not distributed - at least
not to all members of the IGEXMAIL distribution list - we resend the corre-
sponding e-mail. We apologize to all who already received this analysis report.

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CODE IGEX REPORT GPS WEEK 0981 (DAYS 298-304, DATES 25-10-98 - 31-10-98)
*******************************************************************************
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:                                                           
-------------------------------------------------------------------------------
- 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 3-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:                                         
-------------------------------------------------------------------------------
COX0981N.EPH   GLONASS/GPS DAILY SATELLITE EPHEMERIDES, SP3 FORMAT (N=0..6)    
COX09817.SUM   THIS TEXT FILE                                                  
-------------------------------------------------------------------------------
The orbit files sent to the Global Data Centers are named as follows:

  COXwwwwN.EPH,  where 'CO' stands for CODE, 'X' for IGEX, 'wwww' for GPS week,
                 and 'N' for day of week.

The naming was changed from 'CORwwwwN.EPH' to 'COXwwwwN.EPH' in order to 
allow a generic naming convention of the IGEX products with an 'X' for all 
ACs (an 'R' is already used for the EMR GPS product names).
-------------------------------------------------------------------------------

------------------------------------------------------                         
THREE DAY SOLUTION STATISTICS:                                                 
------------------------------------------------------                         
MIDDLE DAY  FILES  OBSERVATIONS   PARAMETERS  RMS (MM)                         
------------------------------------------------------                         
298          20     88408          1993        1.4
299          23    101420          2206        1.4
300          23    109462          2119        1.4
301          29    143204          2876        1.4
302          31    145859          3054        1.4
303          35    164017          3693        1.3
304          32    170195          3597        1.3
------------------------------------------------------                         

 -------------------------------------------------------------------------------
 ORBIT REPEATABILITY FROM A 7-DAY FIT THROUGH DAILY ORBIT SOLUTIONS (CM)        
 -------------------------------------------------------------------------------
     103 104 106 109 110 111 112 113 115 116 117 118 120 122 
 -------------------------------------------------------------------------------
 298  22  19  19  63 144  64  93  71  46 106  42  23  35  24
 299  27  27  26  55 106  62  66  59  48  93  33  19  20  19
 300  48  39  25  78  96  51  64  49  52  86  33  16  20  19
 301  34  39  40  48  76  54  38  33  55  38  49  15  17  21
 302  25  37  44  47 119  41  68  36  53  77  26  20  16  19
 303  23  22  55  48 111  48 106  53  67  79  58  16  18  19
 304  31  22  42  65 155  64 122  76  75 111  19  18  19  25
 -------------------------------------------------------------------------------
 ALL  31  31  38  59 118  56  84  56  57  87  39  18  22  21
 -------------------------------------------------------------------------------

 -------------------------------------------------------------------------------
 WEEKLY COORDINATE COMPARISON OF 1-DAY (Z1) SOLUTIONS                           
 -------------------------------------------------------------------------------
 TOTAL NUMBER OF STATIONS:    17
 -------------------------------------------------------------------------------
                       WEEKDAY  RESIDUAL RMS IN MM
 STATION        #DAYS  0123456     N     E     U
 -------------------------------------------------------------------------------
 3SNA 49918S001     4   P  PPP    33   155   456
 BORG 12205M004     3    P PP      3    13    29
 BRUG 13101M005     3      PPP     4     1    10
 DLRA 14208M002     5  P PPP P     4     9     9
 GODZ               7  PPPPPPP     4    21    22
 IRKZ               7  PPPPPPP     6     9    15
 KHAB               5  P  PPPP     6    13    13
 KR0G 10422M001     6  P PPPPP     2     9     5
 LDS1 13215M001     1        P     -     -     -
 LRBA 10093M001     1        P     -     -     -
 METZ 10503M005     4  P  P PP     1     8    11
 MTKA 21741S002     1    P         -     -     -
 OS0G 10402M004     1        P     -     -     -
 REYZ 10202M003     6  PPPPP P     3     4     8
 SL1X 40446S001     6   PPPPPP    10     5    10
 VSLD 13502M008     1      P       -     -     -
 ZIMZ 14001M005     7  PPPPPPP     -     -     -   FIXED
 -------------------------------------------------------------------------------