From: Da Kuang Date: 13 Jul 1999 23:11:42 Subject: [IGEXMail-0410] Wk 0998 JPL IGEX Aanlysis Report ****************************************************************************** IGEX Electronic Mail 13-Jul-1999 23:11:42 Message No 0410 ****************************************************************************** Author: Da Kuang Subject: Wk 0998 JPL IGEX Aanlysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0998 (DATE 99FEB21 TO 99FEB27) ***************************************************************************** Submitted by: Jet Propulsion Laboratory (JPL) California Institute of Technology 4800 Oak Grove Drive Pasadena, CA 91109, USA Phone: (818)-354-8332; Fax: (818)-393-4965 dxk@sideshow.jpl.nasa.gov Submitted files: jpx0998n.sp3 -- 24 hours ephemerids files of the solution; jpx09987.sum -- this file. ----------------------------------------------------------------------------- Solution Strategy ----------------------------------------------------------------------------- - Software: GIPSY/OASIS II. - Data: Undifferenced dual frequency pseudorange and carrier phase measurement. - Orbit arc length: For each day, 72 hours of data are processed to solve for a 30-hour long orbit arc solution. - Procedures: 1. Solve for station position, receiver clock and tropospheric delay from GPS data by fixing GPS orbit and transmitter clock; 2. Solve for GLONASS orbit and transmitter clock from GLONASS data by fixing the station position and tropospheric delay to the solution of step 1, also solved are position and tropospheric delay of the stations that track GLONASS only, receiver clock bias between GPS and GLONASS tracking. - Parameters: - GPS orbit and clock: fixed to the JPL IGS/FLINN solution; - GLONASS orbit: 6 initial states, global solar radiation scale, Y-bias, plus stochastic variation of radiation scale factor in body-fixed X and Z direction, and Y-bias; - GLONASS clock: white noise bias at each measurement time; - Station position: static over the orbit solution period; - Tropospheric zenith delay: random walk process; - Receiver clock: white noise bias at each measurement time; - Receiver clock bias between GPS and GLONASS tracking: random walk process. - Reference clock for GLONASS: Clocks of following stations, as determined in the Point Positioning solution from GPS data in procedure step 1, are chosen as the reference clocks: 99feb21: REFCLOCK = 'KHAB' 99feb22: REFCLOCK = 'KHAB' 99feb23: REFCLOCK = 'IRKZ' 99feb24: REFCLOCK = 'IRKZ' 99feb25: REFCLOCK = 'IRKZ' 99feb26: REFCLOCK = 'IRKZ' 99feb27: REFCLOCK = 'IRKZ' ------------------------------------------------------------------------ ORBIT OVERLAP ERROR (CM) ------------------------------------------------------------------------ Orbit error is computed based on 6 hours of overlapping orbit: 24 hours 3 hours ---|---------------------|--- ---|----------------------|--- 3 hours 24 hours 3D mean rms = sqrt((rms_x**2 + rms_y**2 + rms_z**2)/3) Sat 99feb21 99feb22 99feb23 99feb24 99feb25 99feb26 99feb27 ------------------------------------------------------------ 01 32 15 7 13 11 18 03 27 9 17 11 18 19 04 19 24 14 6 22 19 06 18 34 50 21 10 27 07 10 8 21 26 20 15 08 24 27 31 45 35 29 09 8 29 44 8 27 29 10 72 345 237 250 21 677 11 30 16 13 20 36 40 13 30 36 23 28 18 19 16 19 167 75 21 11 25 17 23 15 15 31 14 25 18 17 29 7 9 27 43 20 12 17 13 14 23 21 22 11 9 19 14 15 25 ------------------------------------------------------------------------ STATION POSITION REPEATABILITY (MM) ------------------------------------------------------------------------ In the solution of each day, a site may be a Fiducial site, a Regular site, or a GPS site. F -- Fiducial site, solved from GPS data and held fixed in GLO OD; R -- Regular site, solved from the GLO data with GLO OD; G -- GPS site, solved from GPS data, not involved in GLO OD; N -- Not used, either no data or data is not good; Site 0123456 X Y Z East North Vertical -------------------------------------------------------- 3SNA RNNNRRN 66 69 38 85 6 59 BIPD NRRRRRN 249 360 207 351 62 329 BORG RRRRRRR 28 96 38 96 10 45 BRUG RRRRRRR 21 43 17 43 15 23 CSIR NNRRRRR 1201 1649 833 1300 767 1605 DLFT NNNFFFF 2 1 1 1 1 3 DLRA RRRRNNN 8 10 9 9 3 13 GATR NFFFFFF 22 5 2 21 3 6 GRAB FFNNNNN 0 3 3 2 1 3 HERP RRRRRRN 14 20 14 20 3 20 IRKZ NNFFFFF 5 7 3 6 3 6 KHAB FFFFNNN 1 4 1 2 2 3 KR0G FFFFFFF 3 5 1 3 4 2 LDS1 RRNNNNN 2 6 6 6 2 6 LINR RRRRRRR 280 940 139 724 259 624 LRBA FFFFFFN 9 10 7 10 2 12 MAGD NNNRRRN 3 4 4 2 1 6 MDOA RRRRRFF 209 53 6 216 6 9 MDVZ FFFFFNN 2 2 2 2 0 3 METZ NNNNFNN 0 0 0 0 0 0 MTKA FFFFFFF 3 9 2 7 1 5 OS0G FFFFFFF 4 8 5 7 2 7 STRR FFFNNNN 4 6 0 3 4 5 SUNM FNNNNFF 24 26 5 13 11 32 THU2 FFFFFFF 8 5 9 7 5 10 TSKA FFFFFFF 3 9 2 8 2 5 VSLD NNRRNNN 1 6 0 5 0 1 WTZG NRNNNNN 0 0 0 0 0 0 WTZZ FFFFFFN 6 10 6 8 2 10 YAKT RRRRRRN 13 17 3 21 4 5 YARR FFNNNNF 2 5 1 0 3 4 ZIMJ FFFFFNN 6 9 7 8 1 10 ZIMZ FFFFFFF 6 11 6 10 1 9