Subject: [IGEXMail-0468] Wk 1006 JPL IGEX Analysis Report
From: Da Kuang <[email-masked]>
Date: 09 Sep 1999 21:48:58

******************************************************************************
IGEX Electronic Mail    09-Sep-1999 21:48:58                   Message No 0468
******************************************************************************

Author: Da Kuang <[email-masked]>
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
              [email-masked]

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