From: Da Kuang Date: 19 Jul 1999 22:13:01 Subject: [IGEXMail-0416] Wk 1001 JPL IGEX Analysis Report ****************************************************************************** IGEX Electronic Mail 19-Jul-1999 22:13:01 Message No 0416 ****************************************************************************** Author: Da Kuang Subject: Wk 1001 JPL IGEX Analysis Report ***************************************************************************** JPL IGEX ANALYSIS REPORT FOR GPS-WEEK 1001 (DATE 99MAR14 TO 99MAR20) ***************************************************************************** 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: jpx1001n.sp3 -- 24 hours ephemerids files of the solution; jpx10017.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: 99mar14: REFCLOCK = 'IRKZ' 99mar15: REFCLOCK = 'KHAB' 99mar16: REFCLOCK = 'KHAB' 99mar17: REFCLOCK = 'KHAB' 99mar18: REFCLOCK = 'IRKZ' 99mar19: REFCLOCK = 'IRKZ' 99mar20: 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 99mar14 99mar15 99mar16 99mar17 99mar18 99mar19 99mar20 ------------------------------------------------------------ 01 9 5 9 12 11 20 03 9 10 15 8 12 14 04 18 7 10 16 4 6 06 30 7 9 9 7 13 07 9 9 13 25 6 36 08 39 12 12 28 25 30 09 17 8 8 29 16 15 10 227 226 157 139 406 242 11 16 18 27 21 8 10 13 10 9 28 21 18 11 16 28 17 11 29 31 22 17 8 14 10 29 13 9 20 9 26 26 27 7 15 22 16 18 18 12 18 17 ------------------------------------------------------------------------ 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 NRRRRNN 10 12 14 11 6 17 BIPD RRRRRRN 26 34 11 34 17 23 BORG RRRRRRR 10 3 10 5 2 14 BRUG RRRRRRR 13 13 11 13 5 17 CSIR RRRRRRR 232 241 77 293 70 164 DLFT FFFFFFF 4 1 5 1 0 6 DLRA RRNNNRR 24 18 28 20 4 36 GATR FFFFFFN 2 3 2 2 0 3 GODZ NNNNNFF 2 3 0 1 2 2 GRAB NNFFFNN 2 0 1 0 0 2 HERP RRRRRNN 8 11 18 11 7 18 IRKZ FNNNFFF 1 3 4 1 0 5 KHAB FFFFFFN 4 3 4 1 1 7 LDS1 RRNNNRR 7 3 13 3 1 15 LINR RRRRRRR 91 44 35 78 19 71 LRBA FFFFNNN 4 0 3 0 0 5 MDOA FFFFFFF 1 7 5 2 1 8 MDVZ FNNNFFF 3 1 4 0 0 5 METZ NFFFFNN 2 2 5 2 0 6 MTKA NFFFFFF 2 3 2 1 0 5 NKLG NNFFFFF 24 14 4 15 4 24 OS0G NNNFNNN 0 0 0 0 0 0 SL1X FFFNNNF 1 3 2 2 0 3 STRR FFFFNNN 2 3 2 4 1 2 SUNM NFRNNNF 1 10 0 9 1 4 TSKA FFFFFFF 1 2 1 1 1 2 WTZZ FFFFFFF 5 0 5 0 0 7 YARR FFFFFFF 4 6 2 6 0 5 ZIMJ FFFFFFF 4 0 4 0 0 6 ZIMZ FFFFFNN 4 0 5 0 0 6