[IGEXMail-0069] Wk 0980 GFZ IGEX Analysis Report Subject

[Wolfgang Soehne <soeh @ gfz-potsdam.de>]

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IGEX Electronic Mail    12-Nov-1998 13:42:23                   Message No 0069
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Author: Wolfgang Soehne <soeh @ gfz-potsdam.de>
Subject: Wk 0980 GFZ IGEX Analysis Report


Author : W. Soehne
Subject: Wk 0980 GFZ IGEX Analysis Report


GFZ has analyzed IGEX data for week 0980. Although the results (i.e.
orbit overlays) for the GLONASS satellites are not sufficient yet
(up to some meter for special satellites, e.g. R11) and are not given here
we like to present our analysis strategy for that week.


Kind regards
 Wolfgang Soehne



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GFZ IGEX ANALYSIS REPORT   GPS-WEEK 0980 (DAYS 291-297, DATES 18-10-98 TO 24-10-98)
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Submitted by: GeoForschungsZentrum Potsdam (GFZ)
              Telegrafenberg A17, D-14473 Potsdam, Germany
              e-mail:gendt @ gfz-potsdam.de
              fax: (0331) 288 1111
              tel: (0331) 288 1114 

SOLUTION CHARACTERISTICS

- Software used :   EPOS.P.V2
- Data used:
   - undifferenced carrier phases
   - 24 h arc solutions  
   - only stations with GPS and GLONASS dual frequency measurements are used 
- Earth rotation parameters are fixed to their initial values
- Coordinates of six stations are fixed in the determination of ORBITS
- Adjusted parameters:
   - state vector of all satellites (GPS and GLONASS)
   - 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


CLOCK ESTIMATION:  KHAB or KR0G were used as time reference
                   no offset and trend correction is performed up to now



STATIONS USED BY GFZ

Sampling rate: 5 minutes         
                                                          
 IGS  INTERNAL         
 CODE  STA#               291  292  293  294  295  296  297
----------------------------------------------------
zimz  965001               P    P    P    P    P    P    P
godz  969001               P    P    P    P    P    P    P
reyz  971001               P    P    P    P    P    P    
irkz  976001               P    P    P    P    P    P    P
khab  977001               P    P    P    P    P    P    P
mdvz  978001                    P    P    P              
gatr  980001                    P    P    P    P    P    P
krog  982001               P    P    P    P    P    P    P
metz  983001               P    P    P         P         P
mtka  987001               P                             
lds1  988001               P    P    P    P    P    P    P
os0g  993001                                   P    P    P
sl1x  995001                              P         P    P