From: Wolfgang Soehne <[email-masked]>

Author : W. Soehne
Date: 29 Apr 1999 09:58:27 
Subject: [IGEXMail-0313] Wk 0998 GFZ IGEX Analysis Report Subject

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IGEX Electronic Mail    29-Apr-1999 09:58:27                   Message No 0313
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Author: Wolfgang Soehne <[email-masked]>
Subject: Wk 0998 GFZ IGEX Analysis Report

Author : W. Soehne
Subject: Wk 0998 GFZ IGEX Analysis Report

******************************************************************************
GFZ IGEX ANALYSIS REPORT   GPS-WEEK 0998 (DAYS 99 052-058, DATES 21-02-99 TO 27-02-99)
******************************************************************************

Submitted by: GeoForschungsZentrum Potsdam (GFZ)
              Telegrafenberg A17, D-14473 Potsdam, Germany
              e-mail:[email-masked]
              fax: (0331) 288 1111
              tel: (0331) 288 1114 

SOLUTION CHARACTERISTICS

- Software used :   EPOS.P.V2
- Data used:
   - undifferenced carrier phases
   - the following observations are used:
     - stations with GPS and GLONASS dual frequency measurements: all
       observations are used
     - stations with GPS single frequency and GLONASS dual frequency
       measurements: only GLONASS observations are used 
     - stations with GPS and GLONASS single frequency measurements: 
       only GLONASS observations are used (corrected for ionosphere), with lower weighting
- Earth rotation parameters are fixed to the estimated values of IGS
- GPS orbits from the IGS final solution are introduced and fixed (except
  eclipsing GPS satellites) 
- Coordinates of only one station (OS0G) are fixed to their initials
  in the determination of orbits
- Adjusted parameters:
   - state vector of GLONASS satellites (and eclipsing GPS satellites)
   - coordinate corrections 
   - tropospheric zenith path delay (4 h)
   - y-bias, solar radiation scaling factor
   - ambiguities
   - STA and SV clock parameters of each observation epoch
   - one clock bias per station and day
   - nine radiation pressure parameters per satellite
- The orbit parameter stem from the middle day of a 3-day-solution

CLOCK ESTIMATION:  OS0G is used as time reference
                   no offset and trend correction is performed

The orbit files (gfx09980.sp3 - gfx09986.sp3) and this summary file (gfx09987.sum)
are available at CDDIS (directory /products/0998).

ORBITS REPEATABILITY (cm):
(mean component error rms =sqrt((xrms**2 + yrms**2 + zrms**2)/3) )

            DAY 1  (24 h)    pred.     DAY 2  (24 h)
   |------------------------|--------|                            
 
                            |------------------------|

   6-hour overlap:          |xxxxxxxx|

------------------------------------------------------
                  RMS for DAY
PRN    053    054    055    056    057    058     MEAN
------------------------------------------------------
 1      38     26     37    132    121     45       66
 3      28     19      8     24     57     31       28
 4      46     38      7      5     28     39       27
 6      36     10     38     34     21     15       26
 7      13     33    685    446    105     18      217
 8      19    310     57    571     45     43      174
 9      24     16     73    124     25    148       68
10       -      -      -      -      -      -        -
11       7     30     21     21     20    104       34
13      64     25     32      4      6     38       28
16      75      -      -    219     44    340      170
17      14     49     74     63     22     33       42
20      39     20     30     20    312    295      119
22     122     68     13     10     10     12       39

MEAN    50     95    201    217    101    137
MEDI    36     26     32     34     28     39

REPEATABILITY OF STATION COORDINATE SOLUTIONS
  by Residuals of Helmert-transformation  (units:mm)

YEAR: 99 DAYS: 052 to 058
      U,u: used for parameter determination in Helmert-transformation
      N,n: not used  
           [ u,n: deleted for repeatability computation   (2.5*sigma) ] 

 SITE  _____REPEATABILITY_____  __________BIAS__________ NUMB  52     
           UP    NORTH    EAST       UP    NORTH    EAST       |       
--------------------------------------------------------------------------------
 3SNA     32.1    11.4    14.2     -83.0    51.0  -125.0 9730  NNNNNNN 
 BIPD     10.4     3.8     8.8     -47.4    43.7    -2.5 9990  NNNNNNN 
 BISZ    214.3    94.0    64.4     106.1  -531.3    -4.8 9580  NNNNNN. 
 BORG      8.5     2.1     2.8     -47.7   -12.2    -5.0 9680  NNNNNNN 
 BRUG     26.0     4.5     7.4     -54.8    -1.2    10.3 9670  NNNNNNN 
 DLFT      2.3     2.0     1.4     -28.4     9.9      .2 9660  .NNNNNN 
 DLRA      8.2     5.4     5.3    -166.6     1.0    -7.4 9720  NNNNNNN 
 GATR     12.5    12.5     9.9      36.0     8.2   -24.5 9800  ..NNNNN 
 GODZ     10.1     9.1     7.5      26.0     2.0     4.7 9690  UUUUUUU 
 GRAB      5.2     1.8      .8        .0   -10.6    -6.2 9570  UUUUUUU 
 HERP     17.6     5.3     5.5     -23.0     1.3    28.8 9790  NNNNNNN 
 IRKZ      4.9     1.1     1.2      -7.7    -5.5     5.4 9760  UUUUUUU 
 KHAB      2.7     3.2     2.5     -12.9     4.3     3.4 9770  UUUUUUU 
 KR0G      2.4     1.0     2.1       5.3   -10.7     2.4 9820  UUUUUUU 
 LDS1      7.1     2.0     5.6    -121.5    -1.9     4.5 9880  NNNNNNN 
 LINR     12.2     4.3    20.3     -51.0   -21.0     4.5 9740  NNNNNNN 
 LRBA      2.4     2.0     1.3       1.6    -3.5     6.3 9910  UUUUUUU 
 MAGD      2.9     3.8     2.3      22.7    18.5   -11.8 9430  UUUUUUU 
 MDOA      9.5    16.6      .4     122.0    57.2   -30.4 9530  ....NNN 
 MDVZ      4.4     2.4     1.4      -4.3    35.2    21.3 9780  UUUUUUU 
 METZ      5.0     3.3     2.5     -25.1      .8     6.7 9830  UUUUUUU 
 MTKA      4.3     4.1     4.6      -5.9    14.9    -9.3 9870  UUUUUUU 
 OS0G      1.9     2.4     2.2     -25.3     5.9    -4.1 9930  UUUUUUU 
 REUN      1.1     3.9     1.7      -6.8   -43.4   128.5 9490  NN..... 
 SL1X     10.2     8.0     6.1      -3.9    -1.9   -11.1 9950  NNNNNNN 
 STRR     13.1     2.1    23.2      37.3   -12.3   -45.6 9560  UUUUNUN 
 SUNM     13.2     6.4    12.8     -33.4    -2.1    13.1 9460  UUUUUUU 
 THU2      7.4     3.1     2.5      -1.6    10.5    -9.6 9630  UUUUUUU 
 TSKA      5.2     4.2     4.6       1.5     5.4     7.9 9590  UUUUUUU 
 USNX      2.8     3.4     1.9      32.5    81.3     8.8 9960  NN..... 
 VSLD      4.6     1.9     2.6       1.6     7.0    29.6 9900  NNNNNNN 
 WTZG     60.7    14.3     6.8     -13.3     9.9    24.1 9510  NNNNNNN 
 WTZZ      4.0     2.0      .9     -93.7    10.8     5.3 9512  NNNNNNN 
 YAKT      3.0     2.2     1.5      15.8    11.4    -5.9 9440  UUUUUUU 
 YARR     30.8     7.7    11.3      42.8    -6.5    -8.1 9920  UUUUUUN 
 ZIMJ      2.8     1.7     1.1      72.0    37.6    48.4 9652  NNNNNNN 
 ZIMZ      3.0     1.8     1.0      -4.4    -8.0     1.7 9650  UUUUUUU 

Remarks:
 BISZ has single frequency  and only few useable data
 
 BIAS means the deviation from our initial coordinates used in the adjustment

GPS-GLONASS RECEIVER BIAS (nanoseconds)

SITE/DAY  052      053      054      055      056      057      058  
-------------------------------------------------------------------
MAGD   -76.71            -78.35   -78.83   -80.47   -41.55   -69.11
YAKT   -77.97   -83.89   -80.51   -73.69   -80.52   -42.69   -83.30
SUNM   -12.49   -12.17                     -22.00     1.45    -4.02
REUN    57.75                                                      
WTZZ    69.57    59.49    70.21    76.06    69.78   108.12    77.75
MDOA                                                -40.80   -77.89
STRR    44.01    31.17    40.13    51.43                      48.10
GRAB    61.71    51.23    62.14             60.57    99.57    70.24
TSKA    50.17    39.59    49.90    55.06    47.65    80.41    57.28
THU2    54.66    45.56    54.94    61.45    54.42    93.39    62.42
ZIMZ    42.48    31.66    41.92    48.45    42.46    80.56    49.67
ZIMJ    -4.79   -13.98    -3.47     4.35    -2.27    35.81         
GODZ    57.58    47.65    58.35    64.61    58.90   100.31    64.67
IRKZ    64.29    52.84    63.43    67.68    62.25    97.67    71.11
KHAB    56.88    44.79    55.56    61.40    54.32    89.93    62.88
MDVZ    67.63    50.80    67.62    71.87    66.85   104.92         
GATR                              -77.89   -84.21   -38.96   -76.36
KR0G    -0.05   -11.35     0.83     6.12    -0.34    37.49     7.51
METZ             34.10             50.83             82.33         
MTKA    60.94    49.72    59.58    64.29    57.08    90.35    67.62
LDS1  -902.58  -913.65  -904.65  -893.52  -911.31  -882.76  -889.28
LRBA    56.55    46.39    56.91    63.37    56.78    95.23    64.44
YARR    68.77    59.79    69.98    73.28                      75.82
OS0G    45.36    35.31    45.56    51.33    45.86    83.54    52.98
SL1X    40.73    30.81    41.35             42.21    80.03    48.67