From: Da Kuang Date: 21 Jun 1999 23:22:00 Subject: [IGEXMail-0387] Wk 0992 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 21-Jun-1999 23:22:00 Message No 0387 ****************************************************************************** Author: Da Kuang Subject: Wk 0992 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0992 (DATE 99JAN10 TO 99JAN16) ***************************************************************************** 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: jpx0992n.sp3 -- 24 hours ephemerids files of the solution; jpx09927.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: 99jan10: REFCLOCK = 'KHAB' 99jan11: REFCLOCK = 'KHAB' 99jan12: REFCLOCK = 'IRKZ' 99jan13: REFCLOCK = 'IRKZ' 99jan14: REFCLOCK = 'IRKZ' 99jan15: REFCLOCK = 'IRKZ' 99jan16: 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 99jan10 99jan11 99jan12 99jan13 99jan14 99jan15 99jan16 ------------------------------------------------------------ 03 9 7 10 8 25 12 04 10 11 6 6 49 15 06 29 11 18 10 45 10 09 6 15 9 7 70 21 10 32 23 22 79 126 73 11 28 14 6 5 30 30 13 10 12 26 4 30 16 16 11 44 27 52 32 91 17 3 12 14 13 117 15 20 13 22 12 10 51 30 22 21 8 8 4 21 31 ------------------------------------------------------------------------ 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 RRRRRRR 43 43 54 25 17 75 BETR GGGGGGN 19 8 1 21 2 2 BIPD RNNNNNN 0 0 0 0 0 0 BORG RRNRRRR 12 75 13 71 15 25 BRUG RRRRRRR 12 21 15 21 8 17 CRAR FFFFFFF 8 14 21 14 7 22 CSIR RNNNRRR 299 166 122 126 56 336 EKAT NNGRRNN 5 1 2 4 2 3 GATR RRRRRRR 6 12 4 7 2 12 GRAB GGFFFFF 2 4 2 4 1 3 HERP RRRRRRR 10 6 12 6 6 15 IRKZ FFFFFFF 8 5 2 8 2 4 KHAB FFFFFGG 1 10 0 8 5 4 KR0G GGFFFFF 1 2 5 2 1 5 LDS1 GRRRRGR 66 5 91 6 4 112 LDS2 GGGGGGG 18 4 24 4 2 30 LINR NNNRRRR 16 25 20 20 7 29 LRBA FFRFFFF 3 2 3 2 1 4 MAGD NNGRRRR 4 7 8 6 3 8 MDOA RRRRRRR 5 12 12 8 5 16 MDVZ FFFFFFF 6 3 3 6 2 4 METZ GFFFFFF 2 4 7 4 1 8 MTKA FFRFNNN 2 2 2 2 0 3 NPLC RRRRNNN 52 50 74 50 61 67 NTZ3 GGGGGGG 2 4 4 3 0 5 OS0G GGRFNGF 3 3 5 3 1 6 PKST NNNNNGG 12 0 21 5 3 23 REUN FFFFFGG 7 3 2 6 3 5 REYZ FFFFFFF 2 1 8 1 2 8 STRR FFFFFGN 12 9 3 14 2 8 SUNM RGGGGRF 110 177 9 207 9 27 SVT3 RRRRRRR 3 16 21 12 2 24 THU2 FFFFFFG 5 1 11 5 1 12 TSKA FFFFFFG 4 10 3 10 4 4 USNX NRRRNNN 916 364 2879 975 2332 1694 VSLD RRRRRRR 13 10 19 9 3 23 YAKT NRRRRRG 2 3 7 2 4 6 YARR FFFFFFF 9 18 3 16 2 13 ZIMZ GGGFFFF 1 3 1 3 1 0