From: Da Kuang Date: 09 Sep 1999 01:20:16 Subject: [IGEXMail-0467] Wk 1005 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 09-Sep-1999 01:20:16 Message No 0467 ****************************************************************************** Author: Da Kuang Subject: Wk 1005 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 1005 (DATE 99APR11 TO 99APR17) ***************************************************************************** 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: jpx1005n.sp3 -- 24 hours ephemerids files of the solution; jpx10057.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: 99apr11: REFCLOCK = 'IRKZ' 99apr12: REFCLOCK = 'IRKZ' 99apr13: REFCLOCK = 'IRKZ' 99apr14: REFCLOCK = 'IRKZ' 99apr15: REFCLOCK = 'IRKZ' 99apr16: REFCLOCK = 'IRKZ' 99apr17: 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 99apr11 99apr12 99apr13 99apr14 99apr15 99apr16 99apr17 ------------------------------------------------------------ 01 3 3 5 9 6 6 03 2 4 17 6 14 4 04 3 3 9 10 9 5 06 11 5 6 18 7 7 07 16 6 9 3 11 6 08 8 24 38 21 15 34 09 17 6 15 11 6 6 10 53 73 1651 3089 3093 248 11 4 2 7 13 36 10 13 3 7 4 6 17 8 16 119 29 31 15 19 49 17 17 4 8 8 12 7 20 4 3 10 6 9 10 22 16 11 2 6 8 4 ------------------------------------------------------------------------ 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 NNNRRRR 7 10 16 11 10 13 BIPD RRRRRRR 6 19 11 19 5 11 BORG RRRRRRR 11 3 13 7 1 16 BRUG NNNRNNN 0 0 0 0 0 0 CSIR NNNRRRN 269 383 102 279 78 381 DLFT GGFFFFF 3 2 3 2 0 5 DLRA RRRRRRR 9 4 9 6 1 12 GODZ GFFFFFF 0 3 2 1 0 4 GRAB GGFFGGG 6 3 5 3 1 8 HERP RRRRRNN 16 20 16 20 4 23 IRKZ FFFFFFF 1 3 3 0 0 4 KR0G GGGGGFF 1 3 5 2 1 5 LDS1 RRGGNNN 105 4 145 1 0 179 LDS2 GGGGGGG 18 6 22 6 2 29 LINR NNNRRRR 38 104 27 100 12 54 LRBA FFFFFFF 2 4 1 4 1 2 MDOA FFFRRRR 5 10 6 3 0 12 MDVZ FFFFFFF 1 2 1 2 0 2 METZ FFFFFFF 1 2 3 1 1 3 MTKA FFFGGGG 2 1 1 1 0 3 NKLG GNNNNNN 0 0 0 0 0 0 NPLC NNNNNNR 0 0 0 0 0 0 NTZ3 GGGGGGG 1 1 1 0 0 2 OS0G FFFGGGF 2 1 3 1 0 4 REUN NNFFGGG 13 6 9 9 6 13 REYZ NNFFGGG 9 2 17 4 1 19 SL1X FFFFFFF 3 2 1 3 0 3 STRR FFFFFFF 2 1 1 1 0 2 TSKA FFFFFGG 2 1 1 1 0 2 WTZZ FFFGGNG 2 2 1 2 1 2 YARR NNFFFFF 2 5 2 4 1 4 ZIMJ NNNNGGG 5 3 6 2 0 8 ZIMZ FFFFFFG 2 3 2 2 0 3