From: Da Kuang Date: 09 Sep 1999 21:48:58 Subject: [IGEXMail-0468] Wk 1006 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 09-Sep-1999 21:48:58 Message No 0468 ****************************************************************************** Author: Da Kuang Subject: Wk 1006 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 1006 (DATE 99APR18 TO 99APR24) ***************************************************************************** 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: jpx1006n.sp3 -- 24 hours ephemerids files of the solution; jpx10067.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: 99apr18: REFCLOCK = 'IRKZ' 99apr19: REFCLOCK = 'IRKZ' 99apr20: REFCLOCK = 'IRKZ' 99apr21: REFCLOCK = 'IRKZ' 99apr22: REFCLOCK = 'IRKZ' 99apr23: REFCLOCK = 'IRKZ' 99apr24: 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 99apr18 99apr19 99apr20 99apr21 99apr22 99apr23 99apr24 ------------------------------------------------------------ 01 11 5 27 18 21 20 03 6 12 12 18 11 43 04 2 17 10 15 13 12 06 7 22 9 11 7 25 07 2 8 23 8 7 12 08 25 16 69 65 25 82 09 6 13 17 22 3 15 10 10158 68 --- --- --- --- 11 6 5 18 65 21 11 13 12 4 13 13 16 23 16 31 65 102 69 25 9 17 15 19 14 11 7 18 20 5 13 36 21 11 17 22 8 10 17 20 18 24 ------------------------------------------------------------------------ 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 38 66 53 32 26 83 BORG RRRRRRR 2 5 4 4 0 5 BRUG NNRNRRR 9 7 7 6 10 6 CSIR RRRRRRR 217 189 80 159 84 239 DLFT FRRRFFF 4 0 4 0 0 6 DLRA RRRRNNN 8 2 3 1 4 8 GODZ GGGFGGN 4 21 27 1 7 33 GRAB GFFFFFG 2 2 2 2 0 3 HERP NRRRRRR 16 9 20 9 3 26 IRKZ FFFFFFF 1 1 2 1 0 2 KR0G FFFGGGG 1 2 4 1 1 4 LDS2 GGGGGGG 18 9 20 9 3 27 LINR RRRNNNR 12 38 38 34 30 30 LRBA FGGNNNN 5 1 5 1 1 7 MDOA RRRRRFG 1 3 2 2 0 3 MDVZ FFFFFFF 1 4 4 3 1 5 METZ FFFFFFF 2 1 3 0 0 4 MTKA FFFGGGF 1 2 1 1 1 3 NPLC RRNNNRR 29 31 29 31 7 41 NTZ3 GGGGGGG 1 1 1 1 0 2 OS0G GGGFFFF 2 0 3 1 1 4 REUN FFFFFFG 2 4 1 2 1 4 REYZ GGNGGGN 2 4 3 4 1 3 SL1X GGNNNNN 2 0 2 2 0 2 STRR FFFFFFF 4 2 1 3 1 4 TSKA GFFFFFG 2 1 1 1 0 3 VSLD NNRRRRR 9 3 13 2 2 16 WTZZ FFFFFGG 8 2 4 1 3 9 YARR FFFGGGF 2 1 1 1 0 3 ZIMJ GGFFFFF 4 2 5 1 1 7 ZIMZ GGGFFGG 4 5 2 5 2 5