Subject: [IGEXMail-0129] Wk 0981 BKG IGEX Analysis Report
From: Heinz Habrich <[email-masked]>
Date: 23 Dec 1998 15:45:15

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IGEX Electronic Mail    23-Dec-1998 15:45:15                   Message No 0129
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Author: Heinz Habrich <[email-masked]>
Subject: Wk 0981 BKG IGEX Analysis Report

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BKG IGEX ANALYSIS REPORT                  GPS WEEK 0981 (DAYS 298 - 304, 1998)
******************************************************************************
                                                                              
Submitted by:    Bundesamt fuer Kartographie und Geodaesie (BKG)              
                 Richard-Strauss-Allee 11, D-60598 Frankfurt Main, Germany    
                         Phone : +49-69-63331                                 
                         Fax   : +49-69-6333425                               
                         E-Mail: [email-masked]                              
                                                                              
Product access:  anonymous ftp to igs.ifag.de (141.74.240.26)                 
                 subdirectory IGEX/products/wwww                              
                                                                              
------------------------------------------------------------------------------
PROCESSING SCHEME:                                                            
------------------------------------------------------------------------------
SOFTWARE:                                                                     
    Bernese GPS Software                                                      
                                                                              
ORBIT COMPUTATION:                                                            
    Double difference phase observations of GLONASS and GPS satellites are    
    processed in ionosphere free linear combination.                          
                                                                              
    IGS orbits and Earth rotation parameters are fixed.                       
                                                                              
    Six initial conditions and nine radiation preassure parameters per        
    satellite are determined for GLONASS satellites.                          
                                                                              
    The middle day of a 3-day-arc is used for the daily orbit results.        
                                                                              
    The daily orbit files include GPS satellite clock values from IGS         
    estimates and broadcasted values for GLONASS satellite clocks.            
                                                                              
    The station Zimmerwald in Switzerland (ZIMZ) is constrained to the        
    ITRF96 coordinates.                                                       
                                                                              
GLONASS/GPS TIME OFFSET:                                                      
    Code observations of combined GLONASS/GPS receivers are used to           
    determine the GLONASS/GPS time offset.                                    
                                                                              
    This offset includes the modulo 1 sec system time scale difference of     
    GLONASS and GPS and an additional offset between the receiver's           
    'GPS clock' and 'GLONASS clock'. The additional offset is receiver        
    dependent.                                                                
                                                                              
TRANSFORMATION PARAMETERS BETWEEN ITRF AND PZ90:                              
    The transformation parameters are derived from GLONASS precise orbits     
    (given in ITRF) and GLONASS broadcast orbits (given in PZ90).             
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
ORBIT REPEATABILITY, DAILY SOLUTIONS COMPARED TO 7-DAY-ARC (CM):              
------------------------------------------------------------------------------
     GLONASS Satellites:                                                      
     103 104 106 109 110 111 112 113 115 116 117 118 120 122 
------------------------------------------------------------------------------
 298  13  22  25  14  67  16  17  17  19  25  48  15  11  11
 299  22  16  23  11  43   8  37  13  17  52  27  10   7   6
 300  28  32  16  23  41  12  34  16  10  35  39  21   6  16
 301  26  32  18  17  59   9  49  24  13  36  37  14  11  12
 302  14  29  29  14  50  29  12  14   9  28  29  18  12   7
 303   7  10  45   9  66  26  60  17   8  17  43   8  20   9
 304  11  16  26   8  86  19  46  12  22  48  14  11  11   8
------------------------------------------------------------------------------
 ALL  19  24  27  15  61  19  40  17  15  36  35  14  12  10
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
GLONASS/GPS TIME OFFSET:                                                      
------------------------------------------------------------------------------
         OFFSET    (NS)                                                       
         RMS ERROR (NS)                                                       
DAY    :       298       299       300       301       302       303       304
STATION                                                                       
------------------------------------------------------------------------------
BORG      1042.719  1051.010  1038.297  1023.174  1052.336  1042.440  1041.659
              .829      .868      .865      .987      .851      .887      .843
BRUG                                    1029.193  1056.392  1043.673  1046.730
                                           1.021      .873      .912      .869
GATR                  64.908    45.306   -13.022                              
                       1.529     1.498     1.976                              
GODZ        87.377    61.966    88.039    69.351    98.134              88.512
              .883     4.756      .878     1.017      .847                .860
IRKZ        89.647    93.040   102.727    96.938   100.319   101.532    93.096
              .840      .804      .866      .841      .811      .846      .843
KHAB        83.169             102.832    92.714              92.435    88.097
              .855               1.113      .847                .870      .864
KR0G        30.356    34.317    30.092    16.603    38.830    29.864    29.612
              .766      .793      .797      .901      .776      .808      .764
LDS1      -901.801  -889.601  -907.028  -920.198  -880.009  -894.690  -906.513
             1.098     1.195     1.297     1.463     1.287     1.156     1.238
LRBA                                                          88.886    90.962
                                                                .864      .842
METZ        80.116    85.819    80.195    65.383    89.621    79.731    77.117
              .776      .804      .851     1.014      .868     1.041     1.000
MTKA                           105.863                                        
                                  .895                                        
OS0G        85.723    91.465    82.937    69.350    93.691    82.833    78.415
              .782      .829      .810      .950      .812      .831      .913
REYZ       124.524   131.611   124.620   111.381   134.386   123.735   124.365
              .797      .821      .802      .929      .811      .814      .799
SL1X                            82.705    56.515    86.981    80.090    76.985
                                 2.384     1.008      .833      .847      .836
WTZG                          -723.257                                -693.696
                                 3.586                                   1.487
VSLD      1041.834  1046.951  1036.471  1025.403  1053.460  1041.781  1045.118
              .888      .922      .881     1.036      .885      .914      .883
ZIMZ        73.551    82.351    70.551    56.834    84.421    72.976    74.825
              .815      .859      .836      .986      .854      .855      .831
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
STATISTICS FOR 1 DAY SOLUTIONS:                                               
------------------------------------------------------------------------------
                                                                              
DAY     OBSERVATIONS       PARAMETERS          RMS (M)                        
------------------------------------------------------------------------------
298            59474             1458            .0015                        
299            52324             1261            .0013                        
300            69553             1663            .0014                        
301            73802             1830            .0014                        
302            62368             1613            .0014                        
303            67420             1917            .0015                        
304            73369             1851            .0014                        
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
COORDINATE COMPARISON FOR 1 DAY SOLUTIONS:                       GPS WEEK 0981
------------------------------------------------------------------------------
TOTAL NUMBER OF STATIONS:    16
------------------------------------------------------------------------------
                      WEEKDAY  RESIDUAL RMS IN MM
STATION        #DAYS  0123456     N     E     U
------------------------------------------------------------------------------
BORG               6   PPPPPP     2     6    20
BRUG               4     PPPP     1     5     4
GATR               3   PPP        8    15    21
GODZ               6  PPPPP P     9    20    30
IRKZ               7  PPPPPPP    13    10    11
KHAB               5  P PP PP    14     9    10
KR0G               7  PPPPPPP     4     7     4
LDS1               7  PPPPPPP     4     8     8
LRBA               2       PP     4     3     8
METZ               7  PPPPPPP     3     6     8
MTKA               1    P         -     -     -
OS0G               7  PPPPPPP     4     6     7
REYZ               7  PPPPPPP     5     6     9
SL1X               6   PPPPPP     6    12    16
VSLD               4    PPPP      8    21    45
ZIMZ               7  PPPPPPP     -     -     -   FIXED
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
STATISTICS FOR 3 DAY SOLUTIONS:                                               
------------------------------------------------------------------------------
                                                                              
MID-DAY OBSERVATIONS       PARAMETERS          RMS (M)                        
------------------------------------------------------------------------------
298           167327             3525            .0015                        
299           181351             3742            .0015                        
300           195679             3996            .0015                        
301           205723             4262            .0015                        
302           203590             4478            .0015                        
303           203157             4555            .0015                        
304           194827             4515            .0015                        
------------------------------------------------------------------------------

                                                                              
------------------------------------------------------------------------------
TRANSFORMATION PARAMETERS BETWEEN ITRF AND PZ90:                              
------------------------------------------------------------------------------
USAGE:                                                                        
                                                                              
         | X |      | X |   | DX |   | SCALE    RZ   -RY |   | X |            
         | Y |  =   | Y | + | DY | + |   -RZ SCALE    RX | * | Y |            
         | Z |      | Z |   | DZ |   |    RY   -RX SCALE |   | Z |            
          ITRF       PZ90                                     PZ90            
                                                                              
------------------------------------------------------------------------------
                                          RMS = RMS of transformed coordinates
          DX     DY     DZ      RX      RY      RZ    SCALE   RMS
DAY       [m]    [m]    [m]   [mas]   [mas]   [mas]   [10E6]  [m]             
------------------------------------------------------------------------------
298      .313   .276  -.768   24.65  -30.80 -414.96    .0028  4.63
299      .549   .553  -.405   24.77  -26.19 -404.71   -.0022  4.34
300     -.042  -.041 -1.109   32.33  -29.40 -386.19    .0213  3.49
301     -.618   .497  -.237   21.31  -40.58 -372.80    .0115  3.27
302     -.422   .529  -.546   24.21  -34.53 -367.04    .0205  3.87
303     -.056   .570  -.553   22.68  -29.54 -367.67    .0216  4.66
304     -.447   .683   .283   15.13  -37.17 -369.59    .0115  5.16
------------------------------------------------------------------------------