[IGSREPORT-2392] Wk 0837 JPL T2 Analysis Report
M
M
Wed Feb 7 13:31:20 PST 1996
******************************************************************************
IGS Electronic Report Wed Feb 7 13:31:20 PST 1996 Message Number 2392
******************************************************************************
Author: M B Heflin
Subject: Wk 0837 JPL T2 Analysis Report
******************************************************************************
TYPE TWO ANALYSIS CENTER COMPARISON FROM JPL FOR GPS WEEK 837 JAN 21 - 27 1996
******************************************************************************
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
----------------------------------------
[Mailed From: mbh at cobra.jpl.nasa.gov]
More information about the IGSREPORT
mailing list