From: Wolfgang Soehne <[email-masked]>

Author : W. Soehne
Date: 29 Apr 1999 18:28:18 
Subject: [IGEXMail-0317] Wk 0999 GFZ IGEX Analysis Report Subject

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IGEX Electronic Mail    29-Apr-1999 18:28:18                   Message No 0317
******************************************************************************

Author: Wolfgang Soehne <[email-masked]>
Subject: Wk 0999 GFZ IGEX Analysis Report

Author : W. Soehne
Subject: Wk 0999 GFZ IGEX Analysis Report

******************************************************************************
GFZ IGEX ANALYSIS REPORT   GPS-WEEK 0999 (DAYS 99 059-065, DATES 28-02-99 TO 06-03-99)
******************************************************************************

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 (gfx09990.sp3 - gfx09996.sp3) and this summary file (gfx09997.sum)
are available at CDDIS (directory /products/0999).

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    060    061    062    063    064    065     MEAN
------------------------------------------------------
 1      14     10      8     68     73     27       33
 3      22      5     22      3      9     61       20
 4      16     30     11     42     12     20       22
 6       4     25     21     25     37     28       23
 7      12     15     31     28     32     45       27
 8      40     38     19    115    151    122       81
 9      31      9     89     42     92     81       57
10       -      -      -      -      -      -        -
11     261    591     34     46    119     77      188
13      55     18     42     58     47     65       47
16      93     56    121    213     49    106      106
17      25     27     60     45     25      6       31
20       -      -      -      -    386    136      261
22      55     43     58     17     24     24       37

MEAN    85    173     54     79    126     73
MEDI    25     25     31     42     47     61

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

YEAR: 99 DAYS: 059 to 065
      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  59     
           UP    NORTH    EAST       UP    NORTH    EAST       |       
--------------------------------------------------------------------------------
 3SNA      8.8     2.1     2.7    -213.7   -18.9   -96.9 9730  ..NNN.. 
 BIPD      7.4     2.6     3.5     -35.7    48.5     3.2 9990  NNNNNNN 
 BISZ    744.6    26.5   257.3     298.9  -490.6   342.4 9580  NNNNNNN 
 BORG     21.3     2.9     2.7     -30.5    -1.1    -4.7 9680  NNNNNNN 
 BRUG     28.4     2.9    13.5     -59.0     6.7    13.6 9670  NNNNNNN 
 DLFT      7.0     1.1     3.8     -22.9    24.0    -3.8 9660  NNNNNNN 
 DLRA     13.7     4.4     5.4    -149.5    10.7    -6.9 9720  NNNNNNN 
 GATR     14.5    16.9     7.6      -9.1   -18.8   -12.7 9800  NNNNNNN 
 GODZ     10.8    13.6     3.3      14.1   -16.2    13.1 9690  UUUUUUU 
 GRAB      8.1     1.9     1.0      11.2     -.7    -3.1 9570  UUUUUUU 
 HERP     12.3     8.1     7.0      -4.9    -2.2    30.2 9790  NNNNNNN 
 IRKZ      4.6     2.8     1.9       7.9     3.8     4.9 9760  UUUUUUU 
 KHAB      2.8     4.8     3.3      -8.0     2.9    -1.3 9770  UUUUUUU 
 KR0G      2.3     1.7     1.3        .8    -3.3     1.1 9820  UUUUUUU 
 LDS1      6.8     2.7     2.4    -126.0     1.5     2.2 9880  NNNNNNN 
 LINR     33.6    15.8    28.1     -55.8   -34.2    27.5 9740  NNNNNNN 
 LRBA      6.9     2.8     2.1       5.3     3.1     8.9 9910  UUUUUU. 
 MAGD      3.6     6.1     2.4      12.4    11.1   -12.0 9430  UUUUUUU 
 MDOA     15.8    18.4     4.2      77.8    23.6   -37.3 9530  NNNNNNN 
 METZ      4.0     2.0     2.0     -20.1    11.9     5.7 9830  UUUUUUU 
 MTKA      4.2     6.2     7.4       1.1    10.7   -22.4 9870  UUUUUUU 
 OS0G      4.4     1.8     1.5     -21.8    15.4    -4.0 9930  UUUUUUU 
 SANG    520.6   282.8   657.3     644.9  -846.9    47.4 9620  NNNN... 
 SL1X      8.0    11.8     3.9      -9.1   -17.2    -3.6 9950  NNNNNNN 
 STRR     20.9     6.7     7.0      48.9   -27.3   -32.1 9560  UUNNNN. 
 SUNM     16.5     9.7    32.7     -28.4   -23.7    25.6 9460  UUUUUNN 
 SUTG    888.2   359.7   902.6    -633.2    31.1  -109.9 9550  NNNN... 
 THU2     11.1     3.9     4.0     -21.6     5.7   -17.3 9630  UUUUUUU 
 TSKA      2.7     6.1     8.4       6.5     1.7    -5.1 9590  UUUUUUU 
 USNX     61.4    42.3    23.0     -54.5    59.6    18.3 9960  NNNNNNN 
 VSLD      6.5     2.4     4.8      10.8    15.4    34.8 9900  NNNNNNN 
 WTZG     31.4    11.8     6.5     -14.7    22.7    40.2 9510  NNNNNN. 
 WTZZ      6.6     1.7     1.2     -86.2    20.4     7.3 9512  NNNNNNN 
 YAKT      2.9     3.7     2.0      12.8    10.3    -5.5 9440  UUUUUUU 
 YARR     13.9     7.3    12.3       6.6    -3.7    17.1 9920  UUUUUU. 
 ZIMJ      9.0     2.7     1.8      86.2    46.5    53.1 9652  NNNNNNN 
 ZIMZ      6.3     1.9      .6       1.5      .1     3.9 9650  UUUUUUU 

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

GPS-GLONASS RECEIVER BIAS (nanoseconds)

SITE/DAY  059      060      061      062      063      064      065  
-------------------------------------------------------------------
MAGD   -49.39   -77.35   -74.86   -66.00   -89.19   -65.29   -70.55
YAKT   -34.86   -79.75   -50.77   -66.73  -101.77            -72.06
SUNM    39.12   -27.71     2.62     3.50    13.36    23.78   -49.89
WTZZ             71.81    78.02    84.33    80.54    90.33    83.80
MDOA   -57.89   -81.92   -75.19   -71.56            -66.09   -72.24
STRR    96.32    29.02    43.21    58.73    48.51                  
GRAB             62.98    69.77    75.97    72.53    81.86    75.51
TSKA    87.65             55.67    63.01    59.56    69.01    59.97
THU2    85.47    56.01    63.41    68.39             74.41    66.94
ZIMZ    76.07    44.14    50.85    56.11    53.04    62.43    56.31
ZIMJ             -3.96     4.55             11.15    18.36    11.74
GODZ             59.74    66.38    69.65    67.40    77.89    71.99
IRKZ    98.91    61.24    71.08    77.28    74.29    82.52    75.06
KHAB    92.49    54.29    61.87    69.03    65.06    74.76    67.08
GATR   -56.16   -80.17   -72.34   -67.77   -73.81   -64.78         
KR0G    32.37    -1.39     6.07    12.61     8.71    19.51    12.39
METZ    74.30    45.27    53.11    59.04    55.29    66.05         
MTKA    98.22    57.39    66.27    73.86    69.32    78.78    70.32
LDS1  -874.03  -904.74  -903.33           -909.69  -900.52  -910.78
LRBA             56.59    64.50    69.82    68.03                  
YARR   118.22    54.71    73.61    83.40    78.59                  
OS0G    79.49    47.09    53.58    59.39    55.44    65.45    59.13
SL1X    68.53    43.59    49.64    54.61    51.92    61.58    53.63