From: Da Kuang Date: 19 Jul 1999 22:10:54 Subject: [IGEXMail-0415] Wk 1000 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 19-Jul-1999 22:10:54 Message No 0415 ****************************************************************************** Author: Da Kuang Subject: Wk 1000 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 1000 (DATE 99MAR07 TO 99MAR13) ***************************************************************************** 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: jpx1000n.sp3 -- 24 hours ephemerids files of the solution; jpx10007.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: 99mar07: REFCLOCK = 'IRKZ' 99mar08: REFCLOCK = 'IRKZ' 99mar09: REFCLOCK = 'IRKZ' 99mar10: REFCLOCK = 'IRKZ' 99mar11: REFCLOCK = 'IRKZ' 99mar12: REFCLOCK = 'IRKZ' 99mar13: 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 99mar07 99mar08 99mar09 99mar10 99mar11 99mar12 99mar13 ------------------------------------------------------------ 01 13 14 6 12 8 6 03 43 15 5 13 4 6 04 22 9 7 6 5 5 06 25 9 3 7 7 5 07 17 7 4 4 8 4 08 19 23 22 18 17 13 09 26 18 21 4 19 26 10 176 59 168 201 120 348 11 34 29 6 13 6 10 13 47 13 19 13 13 4 16 14 12 13 21 22 22 17 43 19 27 15 5 10 20 65 25 11 5 6 17 22 36 25 10 9 15 11 ------------------------------------------------------------------------ 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; N -- Not used, either no data or data is not good; Site 0123456 X Y Z East North Vertical -------------------------------------------------------- 3SNA NRRRRNN 62 40 30 40 11 68 BIPD RRRRRRR 33 62 26 62 11 40 BORG RRRRRRR 8 3 11 2 1 14 BRUG RRRRNNR 8 71 35 70 16 34 CSIR NRNNNRR 220 654 144 669 82 206 DLFT FNNNFFF 3 2 4 1 0 5 DLRA RRRRRRR 25 198 51 196 11 63 GATR NNNNFFF 1 3 2 0 0 4 GRAB NNFFFFN 3 1 3 2 0 4 HERP NNNNRRR 7 4 3 4 3 6 IRKZ FFFFFFF 1 2 3 0 1 3 KHAB FNNNFFF 2 2 4 1 0 5 KR0G FNNNNNN 0 0 0 0 0 0 LDS1 RRRRRRR 6 6 6 5 1 9 LINR RRRRRRR 169 87 48 135 50 134 LRBA NFFFFFF 3 2 3 2 3 3 MAGD RNNNNNN 0 0 0 0 0 0 MDOA FNNNFFF 1 6 4 2 0 7 MDVZ NNNFNNN 0 0 0 0 0 0 METZ NFFFFNN 1 1 3 0 0 4 MTKA FFFFFNN 3 2 2 1 0 4 OS0G FFFFFFF 2 2 6 1 0 6 SL1X FFFFFFF 0 4 3 1 1 4 STRR NNFFFFF 10 4 2 6 7 6 SUNM NFFFNNN 0 1 0 1 0 1 TSKA FFFFFFF 5 5 5 2 0 9 VSLD RRNNNNN 2 0 4 0 0 4 WTZZ FFFFFFF 4 3 5 2 0 7 YARR NFFFFFF 5 2 2 5 0 3 ZIMJ FNNNFFF 3 3 4 3 0 6 ZIMZ FFFFFFF 3 3 3 3 0 4