From: Da Kuang Date: 13 Jul 1999 23:13:56 Subject: [IGEXMail-0411] Wk 0999 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 13-Jul-1999 23:13:56 Message No 0411 ****************************************************************************** Author: Da Kuang Subject: Wk 0999 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0999 (DATE 99FEB28 TO 99MAR06) ***************************************************************************** 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: jpx0999n.sp3 -- 24 hours ephemerids files of the solution; jpx09997.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: 99feb28: REFCLOCK = 'IRKZ' 99mar01: REFCLOCK = 'IRKZ' 99mar02: REFCLOCK = 'IRKZ' 99mar03: REFCLOCK = 'IRKZ' 99mar04: REFCLOCK = 'IRKZ' 99mar05: REFCLOCK = 'IRKZ' 99mar06: 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 99feb28 99mar01 99mar02 99mar03 99mar04 99mar05 99mar06 ------------------------------------------------------------ 01 14 9 3 10 18 17 03 15 6 6 19 24 7 04 10 7 6 36 21 9 06 15 11 9 48 35 10 07 21 11 3 24 21 5 08 80 31 8 50 41 15 09 26 13 9 33 109 16 10 280 69 85 441 263 112 11 11 10 5 16 17 15 13 25 20 12 29 15 8 16 39 14 22 42 65 22 17 42 16 6 23 36 10 18 11 12 15 32 21 32 20 92 --- --- 800 58 13 22 31 16 4 21 33 22 ------------------------------------------------------------------------ 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 -------------------------------------------------------- BIPD NNRRRRR 28 112 32 112 6 42 BORG NRRRRRR 24 134 28 135 7 32 BRUG NNNRRRR 32 11 15 10 15 32 CSIR RRRRNNN 158 391 205 350 128 285 DLFT FNNNNFF 3 2 7 2 2 7 DLRA RRRRRRR 14 6 17 4 3 22 GATR FNNNNNN 0 0 0 0 0 0 GRAB NNFFNNN 0 0 0 0 0 0 HERP NRRRNNN 8 1 5 1 3 9 IRKZ FFFFFFF 2 2 3 1 0 4 KHAB FFFFNNN 3 1 2 2 0 3 KR0G FFFFFFF 2 1 7 1 1 7 LDS1 NNNNNRR 3 2 3 2 0 4 LINR RRRRNRR 446 687 50 807 77 126 LRBA NNFFNNN 0 0 0 0 0 0 MAGD NNNNNRR 0 0 1 1 0 1 MDOA FNNNNFF 2 3 2 1 0 4 METZ NFFFNNN 0 2 0 1 1 0 MTKA FFFFFFF 3 5 3 2 0 6 NKLG NNNNNFN 0 0 0 0 0 0 OS0G FFFFFFF 5 2 8 1 0 10 SL1X NFFFFFF 5 3 2 4 1 4 STRR FFFFNNN 2 2 2 1 0 3 SUNM FFNNNNN 2 0 1 0 0 2 THU2 FFFFFFF 3 2 6 3 2 6 TSKA FFFFFFF 2 2 2 1 0 3 VSLD RRRRNNN 7 2 10 3 0 12 WTZZ NNFFFFF 6 2 7 0 0 9 YARR FFFFNNN 2 2 0 1 1 3 ZIMJ NNNNNFF 1 0 0 0 0 1 ZIMZ FFFFFFF 4 1 6 1 0 7