From: Da Kuang Date: 30 Jun 1999 01:58:38 Subject: [IGEXMail-0398] Wk 0997 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 30-Jun-1999 01:58:38 Message No 0398 ****************************************************************************** Author: Da Kuang Subject: Wk 0997 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0997 (DATE 99FEB14 TO 99FEB20) ***************************************************************************** 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: jpx0997n.sp3 -- 24 hours ephemerids files of the solution; jpx09977.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: 99feb14: REFCLOCK = 'IRKZ' 99feb15: REFCLOCK = 'KHAB' 99feb16: REFCLOCK = 'KHAB' 99feb17: REFCLOCK = 'KHAB' 99feb18: REFCLOCK = 'LRBA' 99feb19: REFCLOCK = 'LRBA' 99feb20: REFCLOCK = 'LRBA' ------------------------------------------------------------------------ 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 99feb14 99feb15 99feb16 99feb17 99feb18 99feb19 99feb20 ------------------------------------------------------------ 01 --- --- 161 539 59 155 03 15 61 10 9 13 20 04 18 30 23 24 13 9 06 14 27 11 29 20 27 07 9 20 11 40 18 23 08 19 20 20 60 38 68 09 47 14 50 59 17 21 10 723 796 1873 13715 9574 171 11 7 7 30 42 23 13 13 32 36 6 45 15 22 16 101 83 43 230 56 82 17 21 27 41 108 11 17 18 17 41 25 45 26 26 20 8 36 12 75 28 109 22 32 24 11 102 74 61 ------------------------------------------------------------------------ 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 41 75 62 19 19 102 BORG RRRRRRR 20 72 31 65 15 46 BRUG RNNNNNR 10 172 9 172 3 8 CSIR NNNRRRN 788 52 58 395 330 602 DLRA RRRRRRR 28 83 17 86 18 17 GATR GGRRGGG 182 29 14 184 9 20 GRAB GGGGFFF 2 3 3 3 0 5 HERP RRRRRRR 16 14 19 14 9 23 IRKZ FGGGGGG 1 8 8 2 1 12 KHAB FFFFGGG 1 1 3 0 0 3 KR0G FFFFFFF 1 4 5 3 1 5 LDS1 GNNNGGR 68 4 98 3 4 119 LDS2 GGGGGGG 11 7 11 6 4 16 LINR RRRRRRR 30 32 7 39 10 20 LRBA FFFFFFF 2 1 4 1 1 4 MAGD RRRRGGG 4 4 2 5 2 3 MDOA RRRRRRR 8 20 16 8 4 25 MDVZ FFFFFFF 7 4 4 7 1 5 METZ FGGGGGG 4 2 7 2 6 6 MTKA NNGGGGG 2 7 2 5 1 4 NKLG GGGGGGF 13 6 1 6 1 13 NTZ3 GGGGGGG 2 2 3 2 0 4 OS0G FFFFFFF 2 2 4 2 0 5 PKST GGNNNNN 2 4 2 5 1 2 REUN GGGGFFF 5 24 8 9 1 24 STRR FFFFFFF 6 2 2 4 1 4 SUNM FFFFGGG 13 4 6 9 3 12 THU2 GGFFFFF 4 3 7 3 4 7 TSKA FFFFGGG 1 6 3 4 0 6 WTZG NNNRNNN 0 0 0 0 0 0 WTZZ FFFFFFF 2 1 3 2 0 4 YAKT RGGGGGG 1 3 4 2 3 4 YARR GGGGNNG 4 9 3 4 1 10 ZIMJ GFFGGGF 3 3 3 4 1 4 ZIMZ FFFGGGF 3 2 4 2 1 5