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[IGEXMail-0102] Subject
- Subject: [IGEXMail-0102] Subject
- From: Wolfgang Soehne <soeh @ gfz-potsdam.de>
- Date: 04 Dec 1998 17:47:31
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IGEX Electronic Mail 04-Dec-1998 17:47:31 Message No 0102
******************************************************************************
Author: Wolfgang Soehne <soeh @ gfz-potsdam.de>
Subject: Subject: Wk 0983 GFZ IGEX Analysis Report
Dear colleagues,
we like to present our results of GLONASS orbits for GPS week 0983.
Although the computed orbit overlaps are not very good, in general,
a comparison of the GFZ GLONASS orbits with the CODE GLONASS orbits
for few days of GPS week 0981 shows a better agreement:
RMS for DAY
PRN 298 299 300
----------------------
3 19 63 50
4 25 42 58
6 74 76 66
9 220 26 42
10 - - -
11 48 63 75
12 21 50 50
13 19 23 23
14 - - -
15 58 40 12
16 - - -
17 121 53 39
18 161 93 23
20 51 102 182
21 - - -
22 17 19 43
Author : W. Soehne
Subject: Wk 0983 GFZ IGEX Analysis Report
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GFZ IGEX ANALYSIS REPORT GPS-WEEK 0983 (DAYS 312-318, DATES 08-11-98 TO 14-11-98)
******************************************************************************
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 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 312 313 314 315 316 317 318 319
-------------------------------------------------------
3 2175 42 98 - 112 150 257 289
4 323 494 25 60 - 187 151 258
6 635 343 277 356 128 103 - 133
9 141 359 235 303 138 319 98 63
10 - - - - - - - -
11 1366 243 59 81 49 40 119 529
12 - - - - - - - -
13 754 459 161 17 46 92 59 112
14 - - - - - - - -
15 516 646 20 437 257 83 42 78
16 - - - - - - - -
17 155 161 194 128 151 195 83 128
18 8 18 88 112 56 38 19 37
20 262 389 102 85 175 194 68 173
21 - - - - - - - -
22 121 316 279 20 126 111 164 509
STATIONS USED BY GFZ (P - processed)
Sampling rate: 5 minutes
IGS INTERNAL
CODE STA# 311 312 313 314 315 316 317 318 319
----------------------------------------------------
wtzg 951001 P P P P P P P P
sang 962001 P
thu2 963001 P P P P P P
zimz 965001 P P P P P P P P P
brug 967001 P P P P P P P P P
borg 968001 P P P P P P P P
godz 969001 P P P P P P P
csir 970001 P
reyz 971001 P P
dlra 972001 P P P P P P P P
3sna 973001 P P P P P
irkz 976001 P P P P P P P P P
khab 977001 P P P P P P P
herp 979001 P
gatr 980001 P P P P P P P P
krog 982001 P P P P P P P P P
metz 983001 P P P P
mtka 987001 P P P P
lds1 988001 P P P P P P P
vsld 990001 P P P P P P
lrba 991001 P P P P P P P
yarr 992001 P P P P P
os0g 993001 P P P P P
sl1x 995001 P P P P P P P P P
usnx 996001 P
nplc 997001 P P
bipd 999001 P P P P P P P P P