[IGSREPORT-3934] Wk 0910 JPL GNAAC Analysis Report
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Mon Jul 14 16:53:16 PDT 1997
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IGS Electronic Report Mon Jul 14 16:53:16 PDT 1997 Message Number 3934
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Author: M B Heflin
Subject: Wk 0910 JPL GNAAC Analysis Report
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GNAAC COMPARISON FROM JPL FOR GPS WEEK 910 JUN 15, 1997 - JUN 21, 1997
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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, 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.
We also compute 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: The solution from COD was excluded this week because constraint
removal yielded negative diagonals in the covariance matrix.
TABLE OF COMPARISON RESIDUALS (N E V in mm)
-------------------------------------------------------------------------------
cod emr esa gfz jpl ngs sio
c+----------+----------+----------+----------+----------+----------+----------+
o| | 4 6 13| 2 8 12| 2 5 12| 1 2 6|10 10 8| 1 3 5|
m| | 7 | 7 | 7 | 7 | 7 | 7 |
b+----------+----------+----------+----------+----------+----------+----------+
cod | | | | | | |
| | | | | | |
+----------+----------+----------+----------+----------+----------+
emr | 8 10 21| 4 15 18| 5 8 12|15 15 14| 5 10 17|
4.0 | 18 | 20 | 14 | 19 | 24 |
+----------+----------+----------+----------+----------+
esa | 6 10 12| 5 10 14|12 15 20| 6 10 13|
4.0 | 31 | 28 | 33 | 43 |
+----------+----------+----------+----------+
gfz | 4 7 16|14 14 17| 2 8 16|
8.0 | 26 | 34 | 41 |
+----------+----------+----------+
jpl |15 14 15| 4 4 15|
7.0 | 24 | 34 |
+----------+----------+
ngs |15 14 18|
26.0 | 44 |
+----------+
sio
2.0
-------------------------------------------------------------------------------
EMR TO ESA TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .5963E+02
DOF = 47
CHI^2/DOF = 1.27
RX = -.8688E-08 +- .2938E-09 rad
RY = -.1255E-08 +- .3330E-09 rad
RZ = -.1715E-04 +- .5933E-09 rad
TX = -.1072E-01 +- .2798E-02 m
TY = -.1351E+00 +- .2730E-02 m
TZ = .8373E-01 +- .1728E-02 m
S = -.1418E-09 +- .4908E-09 parts
----------------------------------------
EMR TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .9387E+02
DOF = 53
CHI^2/DOF = 1.77
RX = -.4598E-08 +- .1601E-09 rad
RY = .2144E-08 +- .1953E-09 rad
RZ = -.1285E-07 +- .2275E-09 rad
TX = -.1216E-01 +- .1661E-02 m
TY = -.1337E+00 +- .1620E-02 m
TZ = .7360E-01 +- .1485E-02 m
S = -.3103E-09 +- .4254E-09 parts
----------------------------------------
EMR TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .2485E+02
DOF = 35
CHI^2/DOF = .71
RX = .9493E-08 +- .2728E-09 rad
RY = .2346E-08 +- .3386E-09 rad
RZ = -.7558E-07 +- .3280E-09 rad
TX = .3827E-02 +- .2594E-02 m
TY = -.1299E+00 +- .2588E-02 m
TZ = .1171E+00 +- .2081E-02 m
S = .5288E-10 +- .6599E-09 parts
----------------------------------------
EMR TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .2963E+02
DOF = 50
CHI^2/DOF = .59
RX = -.1186E-07 +- .3641E-09 rad
RY = .3879E-07 +- .3889E-09 rad
RZ = -.1752E-06 +- .5180E-09 rad
TX = -.4641E-01 +- .3025E-02 m
TY = .6652E-01 +- .2844E-02 m
TZ = -.3484E-01 +- .2289E-02 m
S = .7810E-09 +- .6024E-09 parts
----------------------------------------
EMR TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .9974E+02
DOF = 65
CHI^2/DOF = 1.53
RX = -.8542E-08 +- .1299E-09 rad
RY = -.5771E-08 +- .1482E-09 rad
RZ = -.1449E-07 +- .1589E-09 rad
TX = .4280E-02 +- .1135E-02 m
TY = -.1330E+00 +- .1132E-02 m
TZ = -.6167E-02 +- .8665E-03 m
S = .7612E-09 +- .2422E-09 parts
----------------------------------------
ESA TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .7654E+02
DOF = 86
CHI^2/DOF = .89
RX = .4241E-08 +- .2122E-09 rad
RY = .2535E-08 +- .1950E-09 rad
RZ = .1714E-04 +- .4861E-09 rad
TX = .1771E-02 +- .2125E-02 m
TY = .3631E-02 +- .2177E-02 m
TZ = -.8963E-02 +- .1302E-02 m
S = -.5383E-09 +- .3674E-09 parts
----------------------------------------
ESA TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6411E+02
DOF = 77
CHI^2/DOF = .83
RX = .1849E-07 +- .2324E-09 rad
RY = .2701E-08 +- .2077E-09 rad
RZ = .1708E-04 +- .4987E-09 rad
TX = .1700E-01 +- .2282E-02 m
TY = .1073E-01 +- .2318E-02 m
TZ = .3577E-01 +- .1567E-02 m
S = -.3144E-09 +- .4162E-09 parts
----------------------------------------
ESA TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .4767E+02
DOF = 92
CHI^2/DOF = .52
RX = -.3327E-08 +- .2938E-09 rad
RY = .4037E-07 +- .2829E-09 rad
RZ = .1698E-04 +- .5895E-09 rad
TX = -.3460E-01 +- .2625E-02 m
TY = .2038E+00 +- .2724E-02 m
TZ = -.1166E+00 +- .1553E-02 m
S = .1931E-08 +- .4192E-09 parts
----------------------------------------
ESA TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1616E+03
DOF = 122
CHI^2/DOF = 1.32
RX = .4012E-09 +- .1957E-09 rad
RY = -.4916E-08 +- .1769E-09 rad
RZ = .1714E-04 +- .4693E-09 rad
TX = .1593E-01 +- .1997E-02 m
TY = .4113E-02 +- .1973E-02 m
TZ = -.8679E-01 +- .9356E-03 m
S = .7047E-09 +- .2809E-09 parts
----------------------------------------
GFZ TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6228E+02
DOF = 71
CHI^2/DOF = .88
RX = .1433E-07 +- .1229E-09 rad
RY = -.2084E-09 +- .1202E-09 rad
RZ = -.6328E-07 +- .1489E-09 rad
TX = .1805E-01 +- .1385E-02 m
TY = .7978E-02 +- .1418E-02 m
TZ = .4369E-01 +- .1539E-02 m
S = .5076E-09 +- .4000E-09 parts
----------------------------------------
GFZ TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .4564E+02
DOF = 95
CHI^2/DOF = .48
RX = -.7515E-08 +- .1579E-09 rad
RY = .3772E-07 +- .1484E-09 rad
RZ = -.1631E-06 +- .2411E-09 rad
TX = -.3670E-01 +- .1353E-02 m
TY = .1995E+00 +- .1664E-02 m
TZ = -.1102E+00 +- .1324E-02 m
S = .2629E-08 +- .3455E-09 parts
----------------------------------------
GFZ TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1316E+03
DOF = 116
CHI^2/DOF = 1.13
RX = -.3906E-08 +- .7065E-10 rad
RY = -.7422E-08 +- .7194E-10 rad
RZ = -.1783E-08 +- .9925E-10 rad
TX = .1558E-01 +- .7326E-03 m
TY = .1236E-02 +- .7617E-03 m
TZ = -.7847E-01 +- .7849E-03 m
S = .1155E-08 +- .1862E-09 parts
----------------------------------------
JPL TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .3239E+02
DOF = 65
CHI^2/DOF = .50
RX = -.2178E-07 +- .2634E-09 rad
RY = .3784E-07 +- .2254E-09 rad
RZ = -.9974E-07 +- .4435E-09 rad
TX = -.5597E-01 +- .2240E-02 m
TY = .1953E+00 +- .2723E-02 m
TZ = -.1546E+00 +- .1827E-02 m
S = .2951E-08 +- .5531E-09 parts
----------------------------------------
JPL TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .6680E+02
DOF = 95
CHI^2/DOF = .70
RX = -.1828E-07 +- .9323E-10 rad
RY = -.7431E-08 +- .8922E-10 rad
RZ = .6146E-07 +- .1326E-09 rad
TX = -.2536E-02 +- .1150E-02 m
TY = -.6665E-02 +- .1090E-02 m
TZ = -.1202E+00 +- .8913E-03 m
S = .3020E-09 +- .2501E-09 parts
----------------------------------------
NGS TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
CHI^2 = .1051E+03
DOF = 125
CHI^2/DOF = .84
RX = .3609E-08 +- .9792E-10 rad
RY = -.4517E-07 +- .1112E-09 rad
RZ = .1611E-06 +- .1818E-09 rad
TX = .5150E-01 +- .1069E-02 m
TY = -.2021E+00 +- .1014E-02 m
TZ = .3388E-01 +- .7188E-03 m
S = -.1869E-08 +- .2029E-09 parts
----------------------------------------
[Mailed From: mbh at cobra.jpl.nasa.gov]
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