From: Wolfgang Soehne 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 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: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 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