[IGSREPORT-2106] Subject
M
M
Tue Oct 24 11:02:07 PDT 1995
IGS Electronic Report Tue Oct 24 11:02:07 PDT 1995 Message Number 2106
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Author: M B Heflin
Subject: Subject: Wk 0821 JPL Type Two Analysis Center Comparison
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TYPE TWO ANALYSIS CENTER COMPARISON FROM JPL FOR GPS WEEK 821 OCT 01 - 07 1995
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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.
Weekly solutions in SINEX format were obtained from COD, EMR, GFZ, JPL, 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. A list of all residuals significant at the level of three sigma or
higher is given after the summary. These residuals were removed from the final
comparisons. Transformation parameters for each pair are given at the end of
the report.
Remarks: Constraint removal is fully implemented starting this week.
TABLE OF COMPARISON RESIDUALS (N E V in mm)
-------------------------------------------------------------------------------
emr esa gfz jpl ngs sio
+-----------+-----------+-----------+-----------+-----------+-----------+
cod | 8 12 18| | 9 10 15| 7 8 16| | 9 10 20|
10.0 | 24 | | 44 | 40 | | 48 |
+-----------+-----------+-----------+-----------+-----------+-----------+
emr | | 8 17 18| 7 12 14| | 7 11 26|
5.0 | | 25 | 23 | | 23 |
+-----------+-----------+-----------+-----------+-----------+
esa | | | | |
| | | | |
+-----------+-----------+-----------+-----------+
gfz | 6 12 17| | 9 11 26|
6.0 | 38 | | 39 |
+-----------+-----------+-----------+
jpl | | 8 13 18|
3.0 | | 41 |
+-----------+-----------+
ngs | |
| |
+-----------+
sio
3.0
-------------------------------------------------------------------------------
THREE SIGMA RESIDUALS AND FORMAL ERRORS (mm)
-------------------------------------------------------------------------------
PAIR SITE N E V SN SE SV
CODSIO: ALGO 17.2 -1.7 8.1 5.7 6.5 16.3
CODSIO: JOZE -2.3 -1.6 61.1 6.4 7.8 19.3
CODSIO: NLIB 18.6 -.2 20.8 6.2 7.5 18.0
CODSIO: TSKB 5.1 50.1 -17.8 10.1 13.4 20.7
CODSIO: USUD 4.7 47.2 -12.1 10.4 14.1 23.9
CODSIO: WES2 18.2 -.2 22.6 5.9 7.6 17.6
CODSIO: ZIMM -2.8 3.1 62.5 6.2 8.3 18.8
EMRSIO: DRAO .7 -.9 40.0 4.7 6.4 11.6
GFZSIO: THU1 6.2 -19.8 35.8 5.8 6.4 30.0
-------------------------------------------------------------------------------
COD TO EMR TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6604E+02
DOF = 68
CHI^2/DOF = .97
RX = -.1686E-06 +- .2791E-09 rad
RY = .1289E-06 +- .2902E-09 rad
RZ = -.4659E-06 +- .4252E-09 rad
TX = -.7537E-02 +- .2670E-02 m
TY = .1414E+00 +- .2752E-02 m
TZ = -.3259E-01 +- .2559E-02 m
S = .3982E-09 +- .5556E-09 parts
----------------------------------------
COD TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .8946E+02
DOF = 125
CHI^2/DOF = .72
RX = -.1834E-06 +- .1391E-09 rad
RY = .1346E-06 +- .1485E-09 rad
RZ = -.4947E-06 +- .1681E-09 rad
TX = .9864E-01 +- .1583E-02 m
TY = .4734E-01 +- .1480E-02 m
TZ = -.8398E-01 +- .1532E-02 m
S = -.1528E-09 +- .2711E-09 parts
----------------------------------------
COD TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .7836E+02
DOF = 113
CHI^2/DOF = .69
RX = -.1840E-06 +- .1523E-09 rad
RY = .1324E-06 +- .1489E-09 rad
RZ = -.5002E-06 +- .1850E-09 rad
TX = .1008E-01 +- .1559E-02 m
TY = .3100E-02 +- .1571E-02 m
TZ = -.2868E-01 +- .1524E-02 m
S = -.1539E-09 +- .2960E-09 parts
----------------------------------------
COD TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .7334E+02
DOF = 137
CHI^2/DOF = .54
RX = -.1785E-06 +- .2192E-09 rad
RY = .1371E-06 +- .1957E-09 rad
RZ = -.5147E-06 +- .2637E-09 rad
TX = .2445E-01 +- .1781E-02 m
TY = .8570E-02 +- .1930E-02 m
TZ = .4977E-02 +- .1694E-02 m
S = .7825E-09 +- .3385E-09 parts
----------------------------------------
EMR TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6405E+02
DOF = 68
CHI^2/DOF = .94
RX = -.1499E-07 +- .1988E-09 rad
RY = .5984E-08 +- .2103E-09 rad
RZ = -.2862E-07 +- .2878E-09 rad
TX = .1058E+00 +- .2005E-02 m
TY = -.9690E-01 +- .1965E-02 m
TZ = -.4949E-01 +- .2066E-02 m
S = -.7414E-09 +- .4620E-09 parts
----------------------------------------
EMR TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .5579E+02
DOF = 62
CHI^2/DOF = .90
RX = -.1583E-07 +- .1364E-09 rad
RY = .3620E-08 +- .1522E-09 rad
RZ = -.3387E-07 +- .2191E-09 rad
TX = .1974E-01 +- .1362E-02 m
TY = -.1379E+00 +- .1480E-02 m
TZ = .3342E-02 +- .1280E-02 m
S = -.2998E-09 +- .3110E-09 parts
----------------------------------------
EMR TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .4189E+02
DOF = 62
CHI^2/DOF = .68
RX = -.1014E-07 +- .2688E-09 rad
RY = .7960E-08 +- .2798E-09 rad
RZ = -.4763E-07 +- .4091E-09 rad
TX = .3123E-01 +- .2472E-02 m
TY = -.1366E+00 +- .2484E-02 m
TZ = .3954E-01 +- .2138E-02 m
S = .9977E-09 +- .5525E-09 parts
----------------------------------------
GFZ TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1160E+03
DOF = 107
CHI^2/DOF = 1.08
RX = -.8092E-09 +- .1146E-09 rad
RY = -.2303E-08 +- .1071E-09 rad
RZ = -.4768E-08 +- .1792E-09 rad
TX = -.8796E-01 +- .1167E-02 m
TY = -.4390E-01 +- .1263E-02 m
TZ = .5527E-01 +- .1081E-02 m
S = -.1355E-09 +- .2464E-09 parts
----------------------------------------
GFZ TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .8111E+02
DOF = 110
CHI^2/DOF = .74
RX = .5027E-08 +- .1875E-09 rad
RY = .2532E-08 +- .1784E-09 rad
RZ = -.1922E-07 +- .3193E-09 rad
TX = -.7473E-01 +- .1804E-02 m
TY = -.4057E-01 +- .1884E-02 m
TZ = .8934E-01 +- .1379E-02 m
S = .1396E-08 +- .3834E-09 parts
----------------------------------------
JPL TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .8177E+02
DOF = 116
CHI^2/DOF = .70
RX = .5390E-08 +- .2169E-09 rad
RY = .4686E-08 +- .1670E-09 rad
RZ = -.1400E-07 +- .3961E-09 rad
TX = .1200E-01 +- .2023E-02 m
TY = -.1927E-03 +- .2492E-02 m
TZ = .3478E-01 +- .1055E-02 m
S = .1563E-08 +- .3824E-09 parts
----------------------------------------
[Mailed From: mbh at cobra.jpl.nasa.gov]
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