[IGSREPORT-2147] Subject
M
M
Thu Nov 9 16:52:27 PST 1995
IGS Electronic Report Thu Nov 9 16:52:27 PST 1995 Message Number 2147
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Author: M B Heflin
Subject: Subject: Wk 0823 JPL Type Two Analysis Center Comparison
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TYPE TWO ANALYSIS CENTER COMPARISON FROM JPL FOR GPS WEEK 823 OCT 15 - 21 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.
Solutions in SINEX format were obtained from COD, EMR, GFZ, JPL, and NGS.
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: A weekly solution from NGS was contstructed by combining their daily
submissions.
TABLE OF COMPARISON RESIDUALS (N E V in mm)
-------------------------------------------------------------------------------
emr esa gfz jpl ngs sio
+-----------+-----------+-----------+-----------+-----------+-----------+
cod | 6 8 11| | 6 9 9| 7 7 16| 11 12 22| |
10.0 | 22 | | 35 | 33 | 37 | |
+-----------+-----------+-----------+-----------+-----------+-----------+
emr | | 7 12 15| 5 8 9| 7 12 16| |
4.0 | | 22 | 19 | 22 | |
+-----------+-----------+-----------+-----------+-----------+
esa | | | | |
| | | | |
+-----------+-----------+-----------+-----------+
gfz | 6 9 17| 11 15 22| |
5.0 | 29 | 34 | |
+-----------+-----------+-----------+
jpl | 11 15 19| |
4.0 | 28 | |
+-----------+-----------+
ngs | |
20.0 | |
+-----------+
sio
-------------------------------------------------------------------------------
THREE SIGMA RESIDUALS AND FORMAL ERRORS (mm)
-------------------------------------------------------------------------------
PAIR SITE N E V SN SE SV
CODJPL KIT3 15.8 3.4 -7.6 4.5 8.5 16.3
CODNGS MAC1 5.2 -64.2 15.3 13.3 20.2 25.3
CODNGS MCM4 21.3 -77.6 -20.3 19.2 23.6 27.4
CODNGS LPGS 35.0 -22.7 162.6 21.8 28.4 35.7
EMRJPL HART 6.4 8.3 76.2 6.6 13.3 23.6
GFZJPL WETT 3.6 -18.0 -5.9 3.5 5.9 13.6
GFZNGS LHAS -11.0 -4.1 -70.4 9.4 14.1 21.8
GFZNGS IRKT -5.7 .3 97.1 9.5 11.6 18.6
GFZNGS LPGS 40.0 -1.5 163.0 21.2 28.1 35.4
GFZNGS CAS1 47.5 12.9 28.0 15.7 21.5 24.0
GFZNGS KERG 5.3 63.6 49.5 14.6 19.4 25.4
JPLNGS IRKT -8.3 -5.1 56.3 9.2 11.2 16.1
JPLNGS MCM4 10.1 -71.0 -4.4 18.5 23.0 23.9
-------------------------------------------------------------------------------
COD TO EMR TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .5359E+02
DOF = 59
CHI^2/DOF = .91
RX = -.4445E-07 +- .1994E-09 rad
RY = .2940E-07 +- .2081E-09 rad
RZ = -.6546E-06 +- .2388E-09 rad
TX = -.1140E-01 +- .1750E-02 m
TY = .1387E+00 +- .1703E-02 m
TZ = .2239E-02 +- .2042E-02 m
S = .1787E-08 +- .4580E-09 parts
----------------------------------------
COD TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .9701E+02
DOF = 98
CHI^2/DOF = .99
RX = -.6034E-07 +- .1425E-09 rad
RY = .3284E-07 +- .1432E-09 rad
RZ = -.6842E-06 +- .1986E-09 rad
TX = .9245E-01 +- .1402E-02 m
TY = .3763E-01 +- .1517E-02 m
TZ = .6253E-01 +- .1661E-02 m
S = .2878E-09 +- .3754E-09 parts
----------------------------------------
COD TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .8135E+02
DOF = 92
CHI^2/DOF = .88
RX = -.5485E-07 +- .1138E-09 rad
RY = .4461E-07 +- .1121E-09 rad
RZ = -.7437E-06 +- .1523E-09 rad
TX = .2701E-02 +- .1173E-02 m
TY = .9929E-02 +- .1277E-02 m
TZ = -.3291E-01 +- .1373E-02 m
S = .7725E-09 +- .3187E-09 parts
----------------------------------------
COD TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1168E+03
DOF = 104
CHI^2/DOF = 1.12
RX = .1094E-05 +- .1378E-09 rad
RY = .6320E-07 +- .1508E-09 rad
RZ = .1327E-06 +- .1529E-09 rad
TX = .8521E-02 +- .1156E-02 m
TY = .1808E+00 +- .1233E-02 m
TZ = .2038E+00 +- .1395E-02 m
S = .5956E-08 +- .2963E-09 parts
----------------------------------------
EMR TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6084E+02
DOF = 59
CHI^2/DOF = 1.03
RX = -.1594E-07 +- .1792E-09 rad
RY = .3755E-08 +- .2018E-09 rad
RZ = -.2943E-07 +- .2665E-09 rad
TX = .1023E+00 +- .1841E-02 m
TY = -.1008E+00 +- .1798E-02 m
TZ = .5909E-01 +- .1826E-02 m
S = -.1366E-08 +- .4450E-09 parts
----------------------------------------
EMR TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .4360E+02
DOF = 50
CHI^2/DOF = .87
RX = -.1083E-07 +- .1852E-09 rad
RY = .1560E-07 +- .2059E-09 rad
RZ = -.8904E-07 +- .2382E-09 rad
TX = .1300E-01 +- .1627E-02 m
TY = -.1292E+00 +- .1698E-02 m
TZ = -.3516E-01 +- .1847E-02 m
S = -.1310E-08 +- .4042E-09 parts
----------------------------------------
EMR TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .4769E+02
DOF = 59
CHI^2/DOF = .81
RX = .1139E-05 +- .2170E-09 rad
RY = .3406E-07 +- .2454E-09 rad
RZ = .7875E-06 +- .3820E-09 rad
TX = .1681E-01 +- .1826E-02 m
TY = .4227E-01 +- .1975E-02 m
TZ = .2039E+00 +- .1599E-02 m
S = .3856E-08 +- .3761E-09 parts
----------------------------------------
GFZ TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .7406E+02
DOF = 80
CHI^2/DOF = .93
RX = .5457E-08 +- .1391E-09 rad
RY = .1165E-07 +- .1451E-09 rad
RZ = -.5929E-07 +- .1654E-09 rad
TX = -.8775E-01 +- .1227E-02 m
TY = -.2631E-01 +- .1347E-02 m
TZ = -.9525E-01 +- .1592E-02 m
S = .3853E-09 +- .3650E-09 parts
----------------------------------------
GFZ TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1090E+03
DOF = 95
CHI^2/DOF = 1.15
RX = .1154E-05 +- .1342E-09 rad
RY = .3055E-07 +- .1507E-09 rad
RZ = .8168E-06 +- .2204E-09 rad
TX = -.8363E-01 +- .1284E-02 m
TY = .1441E+00 +- .1508E-02 m
TZ = .1438E+00 +- .1269E-02 m
S = .5345E-08 +- .3180E-09 parts
----------------------------------------
JPL TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .9227E+02
DOF = 77
CHI^2/DOF = 1.20
RX = .1149E-05 +- .1675E-09 rad
RY = .1851E-07 +- .2025E-09 rad
RZ = .8761E-06 +- .1871E-09 rad
TX = .5723E-02 +- .1374E-02 m
TY = .1691E+00 +- .1487E-02 m
TZ = .2377E+00 +- .1571E-02 m
S = .5212E-08 +- .3256E-09 parts
----------------------------------------
[Mailed From: mbh at cobra.jpl.nasa.gov]
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