From: Da Kuang Date: 22 Jun 1999 19:36:30 Subject: [IGEXMail-0390] Wk 0994 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 22-Jun-1999 19:36:30 Message No 0390 ****************************************************************************** Author: Da Kuang Subject: Wk 0994 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0994 (DATE 99JAN24 TO 99JAN30) ***************************************************************************** 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: jpx0994n.sp3 -- 24 hours ephemerids files of the solution; jpx09947.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: 99jan24: REFCLOCK = 'MDVZ' 99jan25: REFCLOCK = 'IRKZ' 99jan26: REFCLOCK = 'IRKZ' 99jan27: REFCLOCK = 'IRKZ' 99jan28: REFCLOCK = 'IRKZ' 99jan29: REFCLOCK = 'IRKZ' 99jan30: 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 99jan24 99jan25 99jan26 99jan27 99jan28 99jan29 99jan30 ------------------------------------------------------------ 03 25 18 16 8 10 8 04 53 13 18 5 5 6 06 44 12 39 13 26 9 07 --- --- --- --- 552 17 08 --- --- --- --- 296 25 09 32 14 34 21 13 3 10 151 38 183 111 177 18 11 21 18 64 22 34 22 13 24 15 26 13 32 9 16 137 20 44 17 59 28 17 38 14 26 11 12 23 20 35 19 22 18 20 18 22 53 13 18 14 15 15 ------------------------------------------------------------------------ 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 73 28 36 56 8 65 BORG RNRNRRR 12 88 39 85 13 43 BRUG RRRRRNN 24 18 17 20 6 28 CRAR GGGFFFF 3 2 3 3 2 3 CSIR RRRRRRR 260 405 104 464 94 137 DLRA NNNNNRR 5 1 9 0 2 10 EKAT GRRGGGG 1 2 3 1 0 4 GATR RRRRRRR 8 16 13 7 4 20 GRAB GFFFFFG 2 1 2 0 0 3 HERP RRRNRRR 14 31 18 31 9 21 IRKZ FFFFFFF 1 1 2 1 0 2 KHAB FFFFFFF 2 3 1 3 0 3 KR0G NNNGFFF 1 2 1 2 0 1 LDS1 RGNNGRG 87 9 121 11 3 150 LDS2 GGGGGGG 12 7 17 7 3 20 LINR NNNNNRR 11 26 4 28 5 0 LRBA GGGGGFF 3 0 4 0 0 5 MAGD RRRGGRR 2 0 4 1 2 3 MDOA RRRRRRR 4 2 4 4 3 4 MDVZ FFFFFFF 3 3 2 2 1 4 METZ FFFFFFF 1 1 5 1 1 5 NTZ3 GGGGGGG 2 0 4 0 0 5 OS0G FFFFFFF 1 1 1 1 0 2 PKST RRRRRRR 11 6 12 3 3 16 REUN FFFFFFF 4 7 3 1 0 9 REYZ GNNNNNN 0 0 0 0 0 0 STRR GGGFFFF 4 4 3 2 1 6 SUNM GGGFRRR 2 2 0 2 1 2 SVT3 RRRRRRR 9 7 17 8 1 19 THU2 GFFFFFF 3 4 5 2 3 6 TSKA FFFFFFF 1 2 1 2 0 1 YAKT RRRRRRR 2 2 2 3 0 2 YARR FGNGFFF 0 4 1 2 1 4 ZIMZ FGGGFFG 1 1 2 1 0 2