From: Da Kuang Date: 28 Jun 1999 21:32:54 Subject: [IGEXMail-0396] Wk 0996 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 28-Jun-1999 21:32:54 Message No 0396 ****************************************************************************** Author: Da Kuang Subject: Wk 0996 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 0996 (DATE 99FEB07 TO 99FEB13) ***************************************************************************** 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: jpx0996n.sp3 -- 24 hours ephemerids files of the solution; jpx09967.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: 99feb07: REFCLOCK = 'KHAB' 99feb08: REFCLOCK = 'KHAB' 99feb09: REFCLOCK = 'KHAB' 99feb10: REFCLOCK = 'IRKZ' 99feb11: REFCLOCK = 'IRKZ' 99feb12: REFCLOCK = 'IRKZ' 99feb13: 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 99feb07 99feb08 99feb09 99feb10 99feb11 99feb12 99feb13 ------------------------------------------------------------ 03 33 13 20 9 12 8 04 47 40 10 6 21 41 06 12 11 28 20 16 22 07 7 15 27 10 20 7 08 24 22 14 12 16 15 09 43 17 33 9 45 16 10 10635 6853 406 117 196 263 11 20 15 7 12 20 35 13 28 16 19 10 10 7 16 100 16 57 12 33 15 17 16 21 17 24 28 21 18 15 16 9 17 36 5 20 20 9 9 18 13 20 22 28 10 16 8 29 8 ------------------------------------------------------------------------ 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 54 84 77 27 16 122 BORG RNNNRRR 20 56 8 59 10 7 BRUG RRRRRRR 7 28 10 28 2 12 CRAR GNNNNNN 0 0 0 0 0 0 CSIR RRRRRNN 1805 1327 518 513 492 2187 DLRA NRRRRRR 13 34 18 35 8 19 GRAB GGFGGGG 2 1 2 2 0 2 HERP RRRRRRR 20 7 42 7 12 45 IRKZ RRRFFFF 6 3 3 7 2 4 KHAB FFFFFFF 2 1 1 2 0 1 KR0G FFFFFFF 2 2 2 3 1 2 LDS1 GNGGGGG 11 6 19 6 3 22 LDS2 GGGGGGG 16 9 16 10 3 22 LINR NRRRNNN 53 72 7 89 12 6 LRBA FFFFFFF 3 5 1 5 1 3 MAGD RRRRRRR 2 1 2 1 1 2 MDOA RGGGGRR 5 18 10 9 2 20 MDVZ FFFFFFF 2 4 2 4 1 3 METZ GGGGFFF 5 3 4 3 2 7 NKLG NNNNNGG 8 3 3 2 3 9 NTZ3 GGGGGGG 3 1 3 1 0 4 OS0G FFFFFFF 2 2 2 2 0 3 PKST RRRRRRR 4 3 6 1 1 8 REUN NNGGGGF 3 13 5 8 2 11 STRR FFFFFFF 4 4 2 5 0 3 SUNM FFFFFFF 15 13 5 17 1 12 SVT3 GGNNNNN 4 5 8 2 1 10 THU2 GFFFGGN 1 2 8 2 0 8 TSKA FFFFFFF 3 2 0 3 0 1 WTZZ GFFFFFF 2 0 2 1 0 3 YAKT RRRRRRR 9 7 1 12 1 2 YARR GGFGGNN 5 1 1 4 0 2 ZIMJ NNNNNNG 0 0 0 0 0 0 ZIMZ NGGFFFF 3 1 2 1 1 4