Subject: [IGSREPORT-2392] Wk 0837 JPL T2 Analysis Report
From: M B Heflin
Date: Wed, 7 Feb 1996 13:31:20 PST

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IGS Electronic Report    Wed Feb  7 13:31:20 PST 1996      Message Number 2392
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Author: M B Heflin 
Subject: Wk 0837 JPL T2 Analysis Report

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TYPE TWO ANALYSIS CENTER COMPARISON FROM JPL FOR GPS WEEK 837 JAN 21 - 27 1996 
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M B Heflin, J F Zumberge, D C Jefferson, M M Watkins, F H Webb

all at the Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA  91109.

Solutions in SINEX format were obtained from COD, GFZ, JPL, NGS, and SIO.
Each center was compared to each other center by estimating a 7-parameter
Helmert transformation to minimize the least-squares coordinate residuals.

The following table summarizes comparison results.  The North, East, and
Vertical WRMS values are given in mm for each pair.  The number of common sites
is given directly underneath the values for WRMS.  The number underneath each
center's name is the scale factor applied to the formal errors from that
center.  Transformation parameters for each pair are given at the end of the
report.

This week we provide a free-network combination of solutions from all centers.
Each solution is scaled and edited according to the results of pairwise
comparisons.  Then all free-network solutions are rigorously combined using
their full covariance matrices.  Sites common to all solutions are used to
compare individual solutions with the combination and residuals are given in
the first row of the comparison table.

Remarks:  A weekly solution from NGS was constructed by combining their daily
submissions.

TABLE OF COMPARISON RESIDUALS (N E V in mm)
-------------------------------------------------------------------------------
     cod        emr         esa       gfz        jpl        ngs        sio
c+----------+----------+----------+----------+----------+----------+----------+
o| 3   3   8|          |          | 2   3   9| 2   3   7|10   8  14| 2   4   7|
m|    15    |          |          |    15    |    15    |    15    |    15    |
b+----------+----------+----------+----------+----------+----------+----------+
     cod    |          |          | 6   5  12| 4   6  21| 9  11  21| 5   7  14|
    10.0    |          |          |    32    |    27    |    36    |    45    |
            +----------+----------+----------+----------+----------+----------+
                emr    |          |          |          |          |          |
                       |          |          |          |          |          |
                       +----------+----------+----------+----------+----------+
                            esa   |          |          |          |          |
                                  |          |          |          |          |
                                  +----------+----------+----------+----------+
                                       gfz   | 5   5  12|10   8  18| 4   8  12|
                                       4.0   |    21    |    28    |    34    |
                                             +----------+----------+----------+
                                                  jpl   | 9   9  24| 3   4  13|
                                                  4.0   |    22    |    31    |
                                                        +----------+----------+
                                                             ngs   |10  13  19|
                                                            20.0   |    36    |
                                                                   +----------+
                                                                        sio
                                                                        2.0
-------------------------------------------------------------------------------

COD TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6717E+02
 DOF        =          89
 CHI^2/DOF  =         .75
 RX =   .2143E-08  +-   .1996E-09  rad
 RY =  -.2380E-08  +-   .1988E-09  rad
 RZ =   .2112E-08  +-   .2194E-09  rad
 TX =   .8180E-01  +-   .1809E-02  m
 TY =   .5458E-01  +-   .1641E-02  m
 TZ =   .1676E-01  +-   .1823E-02  m
 S  =  -.7797E-09  +-   .4240E-09  parts
----------------------------------------

COD TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6761E+02
 DOF        =          74
 CHI^2/DOF  =         .91
 RX =   .1494E-07  +-   .2705E-09  rad
 RY =  -.3241E-07  +-   .2657E-09  rad
 RZ =   .1267E-06  +-   .3634E-09  rad
 TX =   .1095E-01  +-   .2508E-02  m
 TY =  -.1245E-01  +-   .2218E-02  m
 TZ =  -.2655E-01  +-   .2110E-02  m
 S  =  -.1168E-08  +-   .4936E-09  parts
----------------------------------------

COD TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8808E+02
 DOF        =         101
 CHI^2/DOF  =         .87
 RX =  -.4123E-07  +-   .3640E-09  rad
 RY =   .4800E-07  +-   .3883E-09  rad
 RZ =  -.5611E-07  +-   .5295E-09  rad
 TX =  -.1476E-01  +-   .3539E-02  m
 TY =   .2100E+00  +-   .3200E-02  m
 TZ =   .9113E-01  +-   .3669E-02  m
 S  =   .2636E-08  +-   .7189E-09  parts
----------------------------------------

COD TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8517E+02
 DOF        =         128
 CHI^2/DOF  =         .67
 RX =   .2525E-07  +-   .1642E-09  rad
 RY =   .1591E-07  +-   .1415E-09  rad
 RZ =  -.2498E-07  +-   .1691E-09  rad
 TX =   .1322E-01  +-   .1315E-02  m
 TY =  -.1409E-02  +-   .1276E-02  m
 TZ =   .1019E-02  +-   .1397E-02  m
 S  =  -.4862E-09  +-   .3160E-09  parts
----------------------------------------

GFZ TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5354E+02
 DOF        =          56
 CHI^2/DOF  =         .96
 RX =   .1312E-07  +-   .2149E-09  rad
 RY =  -.3027E-07  +-   .2284E-09  rad
 RZ =   .1246E-06  +-   .3006E-09  rad
 TX =  -.7039E-01  +-   .2069E-02  m
 TY =  -.6474E-01  +-   .1982E-02  m
 TZ =  -.4761E-01  +-   .1864E-02  m
 S  =  -.1469E-09  +-   .4396E-09  parts
----------------------------------------

GFZ TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5929E+02
 DOF        =          77
 CHI^2/DOF  =         .77
 RX =  -.4330E-07  +-   .3613E-09  rad
 RY =   .5065E-07  +-   .3884E-09  rad
 RZ =  -.5731E-07  +-   .5634E-09  rad
 TX =  -.9838E-01  +-   .3543E-02  m
 TY =   .1554E+00  +-   .3172E-02  m
 TZ =   .6971E-01  +-   .3588E-02  m
 S  =   .4009E-08  +-   .7034E-09  parts
----------------------------------------

GFZ TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .9685E+02
 DOF        =          95
 CHI^2/DOF  =        1.02
 RX =   .2311E-07  +-   .1348E-09  rad
 RY =   .1836E-07  +-   .1465E-09  rad
 RZ =  -.2695E-07  +-   .1665E-09  rad
 TX =  -.6827E-01  +-   .1257E-02  m
 TY =  -.5523E-01  +-   .1182E-02  m
 TZ =  -.1458E-01  +-   .1313E-02  m
 S  =  -.1058E-09  +-   .2924E-09  parts
----------------------------------------

JPL TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8102E+02
 DOF        =          59
 CHI^2/DOF  =        1.37
 RX =  -.5567E-07  +-   .4348E-09  rad
 RY =   .8043E-07  +-   .4318E-09  rad
 RZ =  -.1818E-06  +-   .8526E-09  rad
 TX =  -.3020E-01  +-   .4388E-02  m
 TY =   .2247E+00  +-   .3688E-02  m
 TZ =   .1187E+00  +-   .3948E-02  m
 S  =   .3482E-08  +-   .7322E-09  parts
----------------------------------------

JPL TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .4906E+02
 DOF        =          86
 CHI^2/DOF  =         .57
 RX =   .1086E-07  +-   .1891E-09  rad
 RY =   .4822E-07  +-   .1844E-09  rad
 RZ =  -.1516E-06  +-   .2517E-09  rad
 TX =   .3149E-02  +-   .1635E-02  m
 TY =   .1810E-01  +-   .1573E-02  m
 TZ =   .3018E-01  +-   .1489E-02  m
 S  =   .6649E-09  +-   .3378E-09  parts
----------------------------------------

NGS TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .7631E+02
 DOF        =         101
 CHI^2/DOF  =         .76
 RX =   .6718E-07  +-   .1008E-09  rad
 RY =  -.3259E-07  +-   .1136E-09  rad
 RZ =   .3148E-07  +-   .1658E-09  rad
 TX =   .3231E-01  +-   .1000E-02  m
 TY =  -.2025E+00  +-   .1005E-02  m
 TZ =  -.9062E-01  +-   .8941E-03  m
 S  =  -.2760E-08  +-   .2256E-09  parts
----------------------------------------

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