From: Wolfgang Soehne <[email-masked]>

Author : W. Soehne
Date: 11 Dec 1998 12:39:03 
Subject: [IGEXMail-0117] Wk 0984 GFZ IGEX Analysis Report Subject

Precedence: bulk

******************************************************************************
IGEX Electronic Mail    11-Dec-1998 12:39:03                   Message No 0117
******************************************************************************

Author: Wolfgang Soehne <[email-masked]>
Subject: Wk 0984 GFZ IGEX Analysis Report

Dear colleagues,

First we show the comparison of the GFZ GLONASS orbits with the CODE GLONASS orbits for GPS week 0982 after Helmert transformation (unit cm):

                  RMS for DAY
PRN  312    313    314    315    316    317    318
--------------------------------------------------
 3   196     80     28     18     28     17     21 
 4   170     64     43     19     33     17     27
 6   120     55     16     74     37     28     22
 9   356     33     33     32     38     54     18
10     -      -      -     -      -      -       -
11   949     77     13     24     54     50     60
12     -      -      -     -      -      -       -
13   108    125     21     11     23     28     20
14     -      -      -     -      -      -       -
15    62     15     45     39     39     20     24
16     -      -      -     -      -      -       -
17    60     60     33     25     16     17     24
18    61     15     36     11      9     10     14
20    27    148     44     38     27     23     15
21     -      -      -     -      -      -       -
22    76     32     11     25     26     23     57

Following the summary file containing the results of the GLONASS orbits 
for GPS week 984 computed by GFZ

Author : W. Soehne
Subject: Wk 0984 GFZ IGEX Analysis Report

******************************************************************************
GFZ IGEX ANALYSIS REPORT   GPS-WEEK 0984 (DAYS 319-325, DATES 15-11-98 TO 21-11-98)
******************************************************************************

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
   - 24 h arc solutions  
   - only stations with combined GPS and GLONASS dual frequency measurements
     or with GLONASS dual frequency measurements are used 
- Earth rotation parameters are fixed to their initial values
- GPS orbits from the IGS final solution are introduced and fixed (except
  eclipsing GPS satellites 
- Coordinates of only one station 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

CLOCK ESTIMATION:  KR0G is used as time reference
                   no offset and trend correction is performed

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

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

   7.75-hour overlap:       |xxxxxxxx|

---------------------------------------------------
                 RMS for DAY
PRN  320    321    322    323    324    325    326
-------------------------------------------------------
 3   112     41     74     52     55     57    121
 4   174    114     61     25     74     25     61
 6   288    132    206    160     67     79     46
 9    97     64     32    111     57    100     22
10     -      -      -      -      -      -      -
11   297    116     66     82     15     38     83
12     -      -      -      -      -      -      -
13   524     96     12     52    129     26     23
14     -      -      -      -      -      -      -
15   217     99     95    110     11     82     34
16     -      -   1882   2507   6877    654   3540
17    68    178    196    153    251    235    129
18    90     45     60     69    175    133     83
20   195     86    167    192     54    143    103
21     -      -      -      -      -      -      -
22   650    196    237     43    167    142    101

STATIONS USED BY GFZ (P - processed)

Sampling rate: 5 minutes         
                                                          
 IGS  INTERNAL         
 CODE  STA#       320  321  322  323  324  325  326
----------------------------------------------------
wtzg  951001       P                              
strr  956001       P                             P
grab  957001       P    P    P    P    P    P     
tska  959001                      P    P    P    P            
sang  962001                                P    P
thu2  963001       P    P    P         P    P    P
zimz  965001       P    P    P    P    P    P    P
brug  967001       P    P         P    P    P    P
borg  968001            P    P    P    P    P    P
godz  969001       P    P    P    P    P    P    P
reyz  971001                           P    P    
dlra  972001       P    P    P         P    P    P
3sna  973001       P    P    P    P    P    P    P
irkz  976001       P    P    P    P    P    P    P
khab  977001       P                             P
herp  979001            P    P    P    P         P
gatr  980001       P                              
krog  982001       P    P    P    P    P    P    P
metz  983001       P                              
mtka  987001            P    P    P    P    P    P
lds1  988001       P    P    P    P    P    P    P
vsld  990001       P    P    P    P    P    P    P
lrba  991001            P              P    P    P
yarr  992001       P    P    P    P               
os0g  993001       P         P    P    P    P    P
sl1x  995001       P    P    P    P    P    P    P
usnx  996001            P                    
nplc  997001       P    P    P    P              
bipd  999001       P    P    P    P    P    P    P