[IGSREPORT-4554] Wk 0940 MIT T2 Analysis Report
Thomas
Thomas
Mon Feb 2 11:04:07 PST 1998
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IGS Electronic Report Mon Feb 2 11:04:07 PST 1998 Message Number 4554
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Author: Thomas Herring
Subject: Wk 0940 MIT T2 Analysis Report
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MIT ANALYSIS REPORT GPS-WEEK 0940 Dates: 98jan11 to 98jan17
********************************************************************************
MIT (Massachusetts Institute of Technology)
Room 54-618
77 Massachusetts Avenue,
Cambridge, MA 02139
e-mail: tah at mtglas.mit.edu
tel: (617)253-5941 (Tom Herring)
fax: (617)253-1699
PRODUCTS GENERATED:
The following products are generated and uploaded into CDDIS @ NASA/GSFC
MIT0940g.SNX Combined sinex file from all available analysis centers
MIT0940g.SUM Name of this summary file
MIT0940g.RES File of the individual AC position estimates residuals
to the combined solution for the week.
0.0 Starting Week 0931 we added a new residual file to our submissions.
A description of the contents of the file is given in the file itself.
We also changed the treatment of the translation of the individual
AC solutions. The generation of the weighting factors and the constrained
combined solution remains unchanged. However, in the unconstrained
analyses (used for AC comparisons) we now allow explicit translation
and scale parameters in the solution. The net effect is to generate
more realisitic sigmas for the center of mass position estimates and to
make the coordinate estimates immune to real center of mass translations
and scale changes.
0.1 Starting Week 0901 we started using a new apriori file not Non-ITRF94 coordinates
based on the analysis of week 0822-0900 sinex files.
1.0 Analysis Procedures:
(1) Each centers sinex solutions are de-constrained before
combination. Due to numerical stability different new constraints
are applied to different centers (see center report below):
(2) Covariance matrices from each center are re-scaled to generate
unit increment in chi square per degree in the tight constraints solution.
The values are are based in the chi**2 per degree of freedom increment
when the loosely constrained solution is constrained to the ITRF1994
coordinates of the 13 core sites. Orientation changes are estimated
in this step, but translations and scale are NOT estimated.
(3) The tight solution is generated with the following constraints on
the core sites. Starting Week 0858, ITRF94 is used for the coordinate
system. Starting Week 0878, we changed the site selection here to use
WTZR and GOL2. Starting Week 0897 we stopped using MADR as a core site.
Sig N Sig E Sig U
(m) (m) (m)
TROM 0.004 0.004 0.004
X MADR 0.003 0.003 0.003
KOSG 0.003 0.003 0.005
WTZR 0.002 0.002 0.003
HART 0.004 0.004 0.004
ALGO 0.003 0.003 0.003
YELL 0.003 0.003 0.004
GOLD 0.004 0.004 0.005
GOL2 0.004 0.004 0.005
FAIR 0.003 0.003 0.003
KOKB 0.003 0.003 0.003
SANT 0.004 0.004 0.004
TIDB 0.004 0.004 0.004
YAR1 0.004 0.004 0.005
Earth rotation parameters are estimated for each center (even when not given
in the original SINEX files. In this case the partial derivatives are
computed from the station coordinates).
(4) Individual Center comments: As a reminder we include here the
position changes being applied to different centers because their
ARP heights do not match the current station logs (or the values
used by the majority of centers. These were reported in
0.0 IMPORTANT NOTE Previously.)
NOTE: Starting Wk0895 we adopted the station log height for
IISC 0.0780 m (Previous value was 0.0000)
MDVO 0.1456 m (Previous value was 0.1493)
EMR: (a) Constraints loosened to +-5 m for positions
(b) TAHI fixed 97/6/1 Wk0908
JPL: (a) Constraints not changed. No constraints given SINEX file but
they are 10 meter for the core sites, and 1 km for others
(b) From Wk922 JPL has the following differences:
MOIN N 0.0000, E 0.0000, U -.1016, IGS 0.0 0.0 0.0857
MDVO N -0.0048, E 0.0056, U 0.1317, IGS 0.0 0.0 0.1456
TAEJ N -0.0055, E 0.0057, U 0.6387, IGS 0.0 0.0 0.6604
KOUR N 0.0000, E 0.0000, U 0.1320, IGS 0.0 0.0 0.0450
MALI N 0.0000, E 0.0000, U 0.1663, IGS 0.0 0.0 0.1347
In addition, the following sites have different heights in the
jpl 7 and g series sinex files: CASA, GALA, HART, HARK, LPGS,
NICO, TOUL.
GFZ: (a) Constraints loosened to +-5 m for positions.
(b) GFZ uses U 0.073 for YAR2; we move to U 0.0814 YAR1
COD: (a) Constraints loosened to +-5 m for positions.
SIO: (a) Constraints not changed since the center's constraints +-10 m
(b) Height corrections
THU1 -0.035 m (SIO -.0350, IGS 0.000 m
MALI -0.035 m (SIO 0.0997; IGS 0.1347)
NGS: (a) Constraints loosened to +-5 m for positions.
(b) NGS sporatically uses 0.000 for the height of YAR1 instead
of the correct height 0.0730 (Recently Weeks 914,917,918 and 923)
ESA: (a) Constraints not changed since the center's constraints are
very loose (1000m)
(b) Remove TAEJ until large height error is understood (Wk 932)
(5) When the combined and center solutions are compared to ITRF94, the
heights are given a variance 10 times larger than the horizontal coordinates.
The same variance ratio is used when the RMS to ITRF94 core sites is
computed.
(6) Starting Week 0826, we show the differences in the coordinates for
five non-core sites, in remote areas. Four of these sites are processed
by all centers. These sites are not used in the RMS calculations or
the transformation estimation to the 13 core sites. The change in procedure
was because FORT is no longer being processed by all centers. AREQ has
been added to the list for this reason.
(7) Starting Week 0826, we start to show a comparison of each centers
results with the combined solution for the week. When the constraints
are applied to loose combined solution to translate, rotate and scale it
to the ITRF94, the constraints are actually applied using the full
covariance matrix of the combined solution (rather than simply directly
applying the transformations to the coordinates). The approach we use
constrains the center of mass to have zero variance relative to ITRF94.
The result of this is that the combined solution has the same center
of mass position and scale as ITRF94, and therefore when each of the
centers are compared to the combined solution, they generate very similar
translations and scales as they do the ITRF94. Had we simply applied
the transformations to the coordinates, the translations and scale would
have been the difference between the combined translations and scale and
the individual center's translations and scale.
This new section is numbered 4.0.
(8) Starting Week 868, we updated the coordinates of sites not included
in the ITRF94 coordinate files. This introduces a discontinuity in the
the adjustments to some of the "isolated" sites shown below.
2.0 COMBINED FIT TO ITRF 1994
Transformation of loose solution COMBINED to ITRF94
-----------------------------------------------
For 11 Sites, RMS after 7 parameter transformation 5.7 mm COMBINED wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-13.2 1.7 7.2 1.7 20.6 2.7 -1.686 0.106 COMBINED CoM
Adjustments to core site positions for COMBINED
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -8.2 0.7 2.4 0.8 2.0 2.1 COMBINED wrt ITRF94
ALGO -2.7 0.4 6.2 0.4 -2.1 1.4 COMBINED wrt ITRF94
YELL 1.0 0.4 6.3 0.3 1.5 1.3 COMBINED wrt ITRF94
GOLD 4.6 0.4 -6.2 0.5 -6.9 2.0 COMBINED wrt ITRF94
GOL2 6.7 0.9 -4.9 0.9 -12.7 3.8 COMBINED wrt ITRF94
FAIR 3.5 0.4 15.5 0.4 -17.1 1.6 COMBINED wrt ITRF94
KOKB -7.1 0.5 -13.2 0.8 -16.0 2.0 COMBINED wrt ITRF94
TIDB 5.5 0.4 5.5 0.7 -3.3 1.8 COMBINED wrt ITRF94
YAR1 -13.3 0.4 4.5 0.7 5.1 1.7 COMBINED wrt ITRF94
WTZR 10.2 0.4 0.5 0.5 24.2 1.6 COMBINED wrt ITRF94
KOSG 6.5 0.4 -5.4 0.5 25.6 1.4 COMBINED wrt ITRF94
Core sites NOT used
MADR 22.3 0.6 9.7 1.3 -1.8 2.5 COMBINED wrt ITRF94
Additional Sites
FORT 10.5 0.8 17.7 1.2 -17.9 2.8 COMBINED wrt ITRF94
AREQ 32.2 0.7 -9.5 1.0 -19.6 2.5 COMBINED wrt ITRF94
MCM4 2.1 1.0 -1.8 1.1 -131.9 2.6 COMBINED wrt ITRF94
GUAM -0.9 1.4 21.3 4.1 14.9 7.4 COMBINED wrt ITRF94
KIT3 12.2 0.7 17.7 1.0 23.3 1.8 COMBINED wrt ITRF94
3.0 CENTER FITS TO ITRF 1994
CENTER EMR
-------------------
VARIANCE RESCALING FACTOR FOR EMR 15.6
Transformation of loose solution EMR to ITRF94
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 6.3 mm EMR wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-24.2 14.9 94.5 17.9 23.0 52.3 -0.352 0.712 EMR CoM
Adjustments to core site positions for EMR
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -17.1 5.1 7.4 7.9 27.6 16.1 EMR wrt ITRF94
ALGO 5.8 2.7 3.3 4.8 -14.8 8.3 EMR wrt ITRF94
YELL 7.7 2.5 1.0 3.8 -1.9 8.5 EMR wrt ITRF94
GOLD 9.6 2.4 -2.8 4.8 -4.8 9.4 EMR wrt ITRF94
FAIR 5.7 3.0 5.2 4.4 -12.3 9.6 EMR wrt ITRF94
KOKB -8.6 4.0 -9.3 7.1 -12.8 14.0 EMR wrt ITRF94
TIDB 7.8 3.6 12.1 7.0 -7.0 13.4 EMR wrt ITRF94
YAR1 -11.4 3.1 1.1 8.3 -6.0 14.2 EMR wrt ITRF94
WTZR 10.2 3.5 -5.0 5.1 16.3 11.9 EMR wrt ITRF94
KOSG 5.6 3.2 -12.8 4.8 15.9 11.3 EMR wrt ITRF94
Core sites NOT used
Additional Sites
FORT 10.1 5.8 -16.7 13.2 -96.2 24.1 EMR wrt ITRF94
AREQ 24.7 4.5 -8.7 9.4 -1.3 15.8 EMR wrt ITRF94
MCM4 10.8 7.2 -24.7 8.0 -125.9 18.8 EMR wrt ITRF94
GUAM -14.1 10.8 46.1 65.1 -2.3 53.4 EMR wrt ITRF94
KIT3 10.8 6.2 21.2 13.1 -1.4 15.0 EMR wrt ITRF94
CENTER JPL
-------------------
VARIANCE RESCALING FACTOR FOR JPL 7.96
Transformation of loose solution JPL to ITRF94
-----------------------------------------------
For 9 Sites, RMS after 7 parameter transformation 5.8 mm JPL wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-0.9 6.5 -6.6 6.8 17.7 7.3 -0.984 0.288 JPL CoM
Adjustments to core site positions for JPL
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -4.6 1.5 1.2 1.3 9.2 6.1 JPL wrt ITRF94
ALGO -3.7 1.2 8.1 1.0 -8.4 3.9 JPL wrt ITRF94
YELL 3.9 1.2 2.2 0.9 -9.6 4.0 JPL wrt ITRF94
GOL2 9.7 1.1 -8.5 1.0 -17.4 4.3 JPL wrt ITRF94
FAIR 3.6 1.2 15.4 0.9 -20.7 4.3 JPL wrt ITRF94
KOKB -4.2 1.2 -11.3 1.3 -4.5 5.0 JPL wrt ITRF94
YAR1 -8.5 1.2 8.9 1.1 15.6 5.1 JPL wrt ITRF94
WTZR 11.0 1.2 -0.5 1.0 20.5 4.4 JPL wrt ITRF94
KOSG 6.0 1.1 -6.9 1.0 15.5 4.0 JPL wrt ITRF94
Core sites NOT used
Additional Sites
FORT 11.6 2.1 4.0 2.7 -18.6 8.1 JPL wrt ITRF94
AREQ 40.1 3.3 -9.1 3.7 4.5 14.3 JPL wrt ITRF94
MCM4 7.5 2.6 -4.0 2.6 -129.8 8.1 JPL wrt ITRF94
KIT3 11.9 2.7 13.9 2.7 14.7 9.2 JPL wrt ITRF94
CENTER GFZ
-------------------
VARIANCE RESCALING FACTOR FOR GFZ 140.75
Transformation of loose solution GFZ to ITRF94
-----------------------------------------------
For 9 Sites, RMS after 7 parameter transformation 8.4 mm GFZ wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-1.0 14.0 130.2 12.4 24.8 41.9 -2.836 1.062 GFZ CoM
Adjustments to core site positions for GFZ
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -6.5 4.0 -25.7 6.4 0.8 21.8 GFZ wrt ITRF94
ALGO 1.8 2.8 0.7 5.4 -14.6 14.7 GFZ wrt ITRF94
YELL 1.3 2.7 10.5 4.5 0.6 15.1 GFZ wrt ITRF94
GOL2 7.3 2.5 -1.9 5.6 0.7 15.1 GFZ wrt ITRF94
FAIR 4.6 3.0 25.8 4.9 -10.6 15.6 GFZ wrt ITRF94
KOKB -8.6 3.6 6.8 6.3 -13.5 17.8 GFZ wrt ITRF94
YAR1 -8.0 3.3 -17.0 5.5 22.4 22.6 GFZ wrt ITRF94
WTZR 12.4 3.2 14.4 4.9 15.7 14.9 GFZ wrt ITRF94
KOSG 10.0 3.1 9.6 4.9 -1.3 15.1 GFZ wrt ITRF94
Core sites NOT used
Additional Sites
FORT 8.8 5.2 14.3 13.0 -44.7 28.2 GFZ wrt ITRF94
AREQ 34.2 3.8 -44.0 9.1 -1.3 20.3 GFZ wrt ITRF94
MCM4 12.7 7.7 -11.3 8.6 -82.7 26.1 GFZ wrt ITRF94
GUAM -5.0 7.3 43.1 20.6 58.7 54.6 GFZ wrt ITRF94
KIT3 15.9 5.2 19.2 8.9 14.6 18.8 GFZ wrt ITRF94
CENTER COD
-------------------
VARIANCE RESCALING FACTOR FOR COD 24.075
Transformation of loose solution COD to ITRF94
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 5.6 mm COD wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-17.2 2.3 -3.4 2.3 30.9 3.4 -2.365 0.138 COD CoM
Adjustments to core site positions for COD
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -6.5 1.1 -1.4 1.3 -1.5 2.8 COD wrt ITRF94
ALGO -2.1 0.6 6.3 0.7 -5.5 1.8 COD wrt ITRF94
YELL 0.6 0.5 6.0 0.4 0.5 1.6 COD wrt ITRF94
GOLD 4.6 0.5 -6.7 0.6 -9.2 2.6 COD wrt ITRF94
FAIR 2.6 0.6 14.1 0.6 -13.6 2.2 COD wrt ITRF94
KOKB -6.4 0.8 -14.4 1.4 -14.2 2.8 COD wrt ITRF94
TIDB 6.0 0.6 6.0 1.1 -3.2 2.4 COD wrt ITRF94
YAR1 -12.3 0.6 1.3 1.1 -12.3 2.5 COD wrt ITRF94
WTZR 9.2 0.7 3.5 0.8 31.2 2.3 COD wrt ITRF94
KOSG 5.6 0.6 -2.4 0.8 28.0 2.0 COD wrt ITRF94
Core sites NOT used
Additional Sites
FORT 9.5 1.2 23.1 1.8 -30.4 4.0 COD wrt ITRF94
AREQ 33.5 1.0 -12.9 1.4 -18.9 3.3 COD wrt ITRF94
MCM4 1.8 1.7 3.0 2.1 -125.3 4.2 COD wrt ITRF94
KIT3 8.4 1.1 21.9 1.6 24.6 2.9 COD wrt ITRF94
CENTER SIO
-------------------
VARIANCE RESCALING FACTOR FOR SIO 1.06
Transformation of loose solution SIO to ITRF94
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 7.5 mm SIO wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
7.9 4.6 13.0 4.5 -61.4 14.7 0.029 0.212 SIO CoM
Adjustments to core site positions for SIO
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -12.3 1.5 7.7 2.4 5.3 5.0 SIO wrt ITRF94
ALGO -0.7 1.0 9.6 1.7 2.7 2.6 SIO wrt ITRF94
YELL 5.1 1.0 6.8 1.5 6.9 2.8 SIO wrt ITRF94
GOLD 9.2 1.0 -7.6 1.9 -7.1 4.0 SIO wrt ITRF94
FAIR 6.9 1.2 12.2 1.5 -26.3 3.0 SIO wrt ITRF94
KOKB -4.7 1.6 -21.2 2.1 -25.6 4.1 SIO wrt ITRF94
TIDB 2.6 1.0 6.3 1.9 -9.6 3.9 SIO wrt ITRF94
YAR1 -14.7 1.1 11.6 1.8 27.4 3.5 SIO wrt ITRF94
WTZR 14.8 1.1 -6.0 1.4 7.0 3.3 SIO wrt ITRF94
KOSG 9.8 1.0 -11.5 1.4 19.6 2.9 SIO wrt ITRF94
Core sites NOT used
MADR 24.2 1.4 3.3 1.8 -11.1 3.4 SIO wrt ITRF94
Additional Sites
FORT 8.8 2.4 12.8 3.7 -0.4 5.5 SIO wrt ITRF94
AREQ 29.5 1.8 -8.8 3.4 -29.1 5.8 SIO wrt ITRF94
MCM4 1.2 2.5 -0.6 2.9 -145.3 4.4 SIO wrt ITRF94
GUAM 2.3 2.5 21.4 4.9 7.1 9.1 SIO wrt ITRF94
KIT3 21.3 1.9 20.3 2.4 14.1 3.2 SIO wrt ITRF94
CENTER NGS
-------------------
VARIANCE RESCALING FACTOR FOR NGS 120.5
Transformation of loose solution NGS to ITRF94
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 10.7 mm NGS wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-37.8 18.2 197.9 17.3 17.3 48.1 -3.134 1.598 NGS CoM
Adjustments to core site positions for NGS
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 21.0 21.0 17.5 24.3 22.8 30.3 NGS wrt ITRF94
ALGO -9.5 22.1 6.2 27.4 -13.1 24.1 NGS wrt ITRF94
YELL 1.3 25.5 -9.6 27.6 1.6 20.5 NGS wrt ITRF94
GOLD -13.9 23.7 -17.2 26.4 6.9 26.3 NGS wrt ITRF94
FAIR -4.8 24.9 -6.6 29.8 -14.4 19.6 NGS wrt ITRF94
KOKB -19.3 24.7 -12.2 29.0 19.6 24.0 NGS wrt ITRF94
TIDB 23.0 21.5 15.8 22.3 -46.8 30.8 NGS wrt ITRF94
YAR1 8.4 20.3 -1.0 21.9 -58.8 29.9 NGS wrt ITRF94
WTZR -14.0 21.0 0.1 26.2 44.4 26.9 NGS wrt ITRF94
KOSG -18.1 21.0 2.3 26.8 37.5 25.8 NGS wrt ITRF94
Core sites NOT used
MADR 0.4 27.5 18.9 37.0 15.1 28.6 NGS wrt ITRF94
Additional Sites
FORT -6.7 37.7 11.2 36.7 25.4 34.4 NGS wrt ITRF94
AREQ 56.0 36.9 5.5 42.3 31.1 30.4 NGS wrt ITRF94
MCM4 3.5 38.1 -9.7 38.3 -136.4 23.9 NGS wrt ITRF94
KIT3 15.0 30.8 -18.0 40.0 53.0 32.4 NGS wrt ITRF94
CENTER ESA
-------------------
VARIANCE RESCALING FACTOR FOR ESA 8.688
Transformation of loose solution ESA to ITRF94
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 5.3 mm ESA wrt ITRF94
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
4.5 7.5 -4.3 7.1 2.2 40.9 -2.322 0.492 ESA CoM
Adjustments to core site positions for ESA
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 0.4 3.5 -2.7 5.8 5.5 10.2 ESA wrt ITRF94
ALGO -6.3 1.9 14.7 3.5 -24.3 6.3 ESA wrt ITRF94
YELL -1.7 1.7 1.2 2.9 -0.2 5.9 ESA wrt ITRF94
GOLD 6.1 1.7 -6.5 4.1 12.0 7.9 ESA wrt ITRF94
FAIR 2.8 2.2 14.3 3.0 -5.1 6.8 ESA wrt ITRF94
KOKB -6.8 2.4 -14.6 4.3 -10.3 8.6 ESA wrt ITRF94
TIDB 3.4 2.6 2.3 4.4 -5.1 9.1 ESA wrt ITRF94
YAR1 -7.4 2.0 1.6 5.0 5.8 8.3 ESA wrt ITRF94
WTZR 9.2 2.5 4.2 3.3 16.9 7.1 ESA wrt ITRF94
KOSG 5.4 2.4 -3.0 3.1 4.9 6.8 ESA wrt ITRF94
Core sites NOT used
MADR 22.0 2.9 13.4 5.3 -32.7 10.3 ESA wrt ITRF94
Additional Sites
FORT 2.5 3.8 28.7 13.9 -53.2 13.0 ESA wrt ITRF94
AREQ 33.7 3.0 -12.3 10.5 -5.0 9.8 ESA wrt ITRF94
MCM4 0.8 5.9 7.4 6.0 -61.1 13.3 ESA wrt ITRF94
GUAM 1.7 3.8 15.0 17.1 13.1 15.4 ESA wrt ITRF94
KIT3 16.5 4.1 9.0 6.7 21.9 7.9 ESA wrt ITRF94
4.0 CENTER FITS TO COMBINED SOLUTION
CENTER EMR
-------------------
VARIANCE RESCALING FACTOR FOR EMR 15.6
Transformation of loose solution EMR to COMB
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 4.1 mm EMR wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-24.4 14.9 94.8 17.9 23.5 52.3 -0.572 0.712 EMR CoM
Adjustments to core site positions for EMR
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -9.7 5.1 6.0 7.9 27.6 16.1 EMR wrt COMB
ALGO 7.2 2.7 -2.6 4.8 -11.5 8.3 EMR wrt COMB
YELL 5.5 2.5 -4.6 3.8 -2.4 8.5 EMR wrt COMB
GOLD 3.7 2.4 4.4 4.8 3.4 9.4 EMR wrt COMB
FAIR 1.3 3.0 -9.1 4.4 5.7 9.6 EMR wrt COMB
KOKB -2.5 4.0 5.2 7.1 4.5 14.0 EMR wrt COMB
TIDB 1.9 3.6 6.9 7.0 -2.2 13.4 EMR wrt COMB
YAR1 1.8 3.1 -3.0 8.3 -9.8 14.2 EMR wrt COMB
WTZR 0.0 3.5 -5.8 5.1 -6.8 11.9 EMR wrt COMB
KOSG -0.9 3.2 -7.9 4.8 -8.6 11.3 EMR wrt COMB
Core sites NOT used
Additional Sites
FORT -1.1 5.8 -33.8 13.2 -76.5 24.1 EMR wrt COMB
AREQ -8.5 4.5 1.7 9.4 20.1 15.8 EMR wrt COMB
MCM4 8.2 7.2 -23.2 8.0 7.9 18.8 EMR wrt COMB
GUAM -13.4 10.8 25.9 65.1 -16.3 53.4 EMR wrt COMB
KIT3 -0.8 6.2 3.7 13.1 -23.9 15.0 EMR wrt COMB
CENTER JPL
-------------------
VARIANCE RESCALING FACTOR FOR JPL 7.96
Transformation of loose solution JPL to COMB
-----------------------------------------------
For 9 Sites, RMS after 7 parameter transformation 2.0 mm JPL wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-3.5 6.5 -6.9 6.8 19.0 7.3 -1.288 0.288 JPL CoM
Adjustments to core site positions for JPL
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 3.1 1.5 2.3 1.3 10.4 6.1 JPL wrt COMB
ALGO -2.1 1.2 2.6 1.0 -5.1 3.9 JPL wrt COMB
YELL 2.1 1.2 -3.6 0.9 -11.0 4.0 JPL wrt COMB
GOL2 1.3 1.1 -2.8 1.0 -4.6 4.3 JPL wrt COMB
FAIR -0.5 1.2 0.2 0.9 -3.9 4.3 JPL wrt COMB
KOKB 0.4 1.2 2.0 1.3 10.6 5.0 JPL wrt COMB
YAR1 2.6 1.2 0.5 1.1 12.3 5.1 JPL wrt COMB
WTZR 0.2 1.2 -1.5 1.0 -1.1 4.4 JPL wrt COMB
KOSG -1.1 1.1 -2.0 1.0 -7.6 4.0 JPL wrt COMB
Core sites NOT used
Additional Sites
FORT 1.4 2.1 -12.2 2.7 3.2 8.1 JPL wrt COMB
AREQ 7.0 3.3 3.2 3.7 26.9 14.3 JPL wrt COMB
MCM4 0.5 2.6 -4.0 2.6 4.8 8.1 JPL wrt COMB
KIT3 -0.9 2.7 -5.2 2.7 -6.6 9.2 JPL wrt COMB
CENTER GFZ
-------------------
VARIANCE RESCALING FACTOR FOR GFZ 140.75
Transformation of loose solution GFZ to COMB
-----------------------------------------------
For 9 Sites, RMS after 7 parameter transformation 7.9 mm GFZ wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-3.6 14.0 129.9 12.4 26.1 41.9 -3.137 1.062 GFZ CoM
Adjustments to core site positions for GFZ
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 1.2 4.0 -24.6 6.4 1.9 21.8 GFZ wrt COMB
ALGO 3.3 2.8 -4.8 5.4 -11.3 14.7 GFZ wrt COMB
YELL -0.5 2.7 4.7 4.5 -0.8 15.1 GFZ wrt COMB
GOL2 -1.0 2.5 3.9 5.6 13.5 15.1 GFZ wrt COMB
FAIR 0.5 3.0 10.6 4.9 6.2 15.6 GFZ wrt COMB
KOKB -4.1 3.6 20.2 6.3 1.6 17.8 GFZ wrt COMB
YAR1 3.1 3.3 -25.4 5.5 19.1 22.6 GFZ wrt COMB
WTZR 1.6 3.2 13.4 4.9 -5.9 14.9 GFZ wrt COMB
KOSG 2.9 3.1 14.5 4.9 -24.4 15.1 GFZ wrt COMB
Core sites NOT used
Additional Sites
FORT -1.4 5.2 -1.9 13.0 -22.9 28.2 GFZ wrt COMB
AREQ 1.2 3.8 -31.6 9.1 21.1 20.3 GFZ wrt COMB
MCM4 5.7 7.7 -11.3 8.6 52.0 26.1 GFZ wrt COMB
GUAM -6.5 7.3 20.0 20.6 43.5 54.6 GFZ wrt COMB
KIT3 3.2 5.2 0.0 8.9 -6.7 18.8 GFZ wrt COMB
CENTER COD
-------------------
VARIANCE RESCALING FACTOR FOR COD 24.075
Transformation of loose solution COD to COMB
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 1.5 mm COD wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-17.4 2.3 -3.1 2.3 31.4 3.4 -2.587 0.138 COD CoM
Adjustments to core site positions for COD
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 0.8 1.1 -2.8 1.3 -1.5 2.8 COD wrt COMB
ALGO -0.8 0.6 0.4 0.7 -2.1 1.8 COD wrt COMB
YELL -1.6 0.5 0.4 0.4 0.0 1.6 COD wrt COMB
GOLD -1.3 0.5 0.5 0.6 -1.1 2.6 COD wrt COMB
FAIR -1.7 0.6 -0.2 0.6 4.4 2.2 COD wrt COMB
KOKB -0.2 0.8 0.1 1.4 3.0 2.8 COD wrt COMB
TIDB 0.1 0.6 0.9 1.1 1.7 2.4 COD wrt COMB
YAR1 1.0 0.6 -2.8 1.1 -16.1 2.5 COD wrt COMB
WTZR -1.0 0.7 2.7 0.8 8.2 2.3 COD wrt COMB
KOSG -0.9 0.6 2.5 0.8 3.5 2.0 COD wrt COMB
Core sites NOT used
Additional Sites
FORT -1.7 1.2 6.0 1.8 -10.8 4.0 COD wrt COMB
AREQ 0.3 1.0 -2.5 1.4 2.6 3.3 COD wrt COMB
MCM4 -0.8 1.7 4.4 2.1 8.5 4.2 COD wrt COMB
KIT3 -3.2 1.1 4.4 1.6 2.2 2.9 COD wrt COMB
CENTER SIO
-------------------
VARIANCE RESCALING FACTOR FOR SIO 1.06
Transformation of loose solution SIO to COMB
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 3.4 mm SIO wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
7.7 4.6 13.3 4.5 -60.9 14.7 -0.192 0.212 SIO CoM
Adjustments to core site positions for SIO
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT -5.0 1.5 6.3 2.4 5.3 5.0 SIO wrt COMB
ALGO 0.7 1.0 3.7 1.7 6.1 2.6 SIO wrt COMB
YELL 2.9 1.0 1.3 1.5 6.4 2.8 SIO wrt COMB
GOLD 3.3 1.0 -0.4 1.9 1.1 4.0 SIO wrt COMB
FAIR 2.6 1.2 -2.1 1.5 -8.3 3.0 SIO wrt COMB
KOKB 1.5 1.6 -6.6 2.1 -8.4 4.1 SIO wrt COMB
TIDB -3.3 1.0 1.2 1.9 -4.8 3.9 SIO wrt COMB
YAR1 -1.4 1.1 7.4 1.8 23.7 3.5 SIO wrt COMB
WTZR 4.6 1.1 -6.8 1.4 -16.1 3.3 SIO wrt COMB
KOSG 3.3 1.0 -6.6 1.4 -4.8 2.9 SIO wrt COMB
Core sites NOT used
MADR 1.6 1.4 -6.6 1.8 -8.0 3.4 SIO wrt COMB
Additional Sites
FORT -2.4 2.4 -4.3 3.7 19.2 5.5 SIO wrt COMB
AREQ -3.7 1.8 1.6 3.4 -7.7 5.8 SIO wrt COMB
MCM4 -1.4 2.5 0.9 2.9 -11.6 4.4 SIO wrt COMB
GUAM 3.0 2.5 1.2 4.9 -6.8 9.1 SIO wrt COMB
KIT3 9.7 1.9 2.8 2.4 -8.3 3.2 SIO wrt COMB
CENTER NGS
-------------------
VARIANCE RESCALING FACTOR FOR NGS 120.5
Transformation of loose solution NGS to COMB
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 11.7 mm NGS wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
-38.0 18.2 198.3 17.3 17.8 48.1 -3.350 1.598 NGS CoM
Adjustments to core site positions for NGS
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 28.3 21.0 16.1 24.3 22.8 30.3 NGS wrt COMB
ALGO -8.1 22.1 0.3 27.4 -9.7 24.1 NGS wrt COMB
YELL -1.0 25.5 -15.1 27.6 1.1 20.5 NGS wrt COMB
GOLD -19.8 23.7 -10.1 26.4 15.1 26.3 NGS wrt COMB
FAIR -9.2 24.9 -21.0 29.8 3.6 19.6 NGS wrt COMB
KOKB -13.2 24.7 2.4 29.0 36.8 24.0 NGS wrt COMB
TIDB 17.1 21.5 10.7 22.3 -42.0 30.8 NGS wrt COMB
YAR1 21.7 20.3 -5.1 21.9 -62.6 29.9 NGS wrt COMB
WTZR -24.2 21.0 -0.7 26.2 21.4 26.9 NGS wrt COMB
KOSG -24.7 21.0 7.2 26.8 13.0 25.8 NGS wrt COMB
Core sites NOT used
MADR -22.2 27.5 9.0 37.0 18.2 28.6 NGS wrt COMB
Additional Sites
FORT -17.9 37.7 -5.9 36.7 45.0 34.4 NGS wrt COMB
AREQ 22.8 36.9 15.9 42.3 52.6 30.4 NGS wrt COMB
MCM4 0.9 38.1 -8.3 38.3 -2.6 23.9 NGS wrt COMB
KIT3 3.4 30.8 -35.5 40.0 30.6 32.4 NGS wrt COMB
CENTER ESA
-------------------
VARIANCE RESCALING FACTOR FOR ESA 8.688
Transformation of loose solution ESA to COMB
-----------------------------------------------
For 10 Sites, RMS after 7 parameter transformation 3.4 mm ESA wrt COMB
X-tran +- Y-tran +- Z-tran +- Scale +-
(mm) (mm) (mm) (mm) (mm) (mm) (ppb) (ppb)
4.3 7.5 -4.0 7.1 2.7 40.9 -2.543 0.492 ESA CoM
Adjustments to core site positions for ESA
SITE dNorth +- dEast +- dUp +-
(mm) (mm) (mm) (mm) (mm) (mm)
SANT 7.7 3.5 -4.1 5.8 5.4 10.2 ESA wrt COMB
ALGO -4.9 1.9 8.8 3.5 -20.9 6.3 ESA wrt COMB
YELL -3.9 1.7 -4.3 2.9 -0.6 5.9 ESA wrt COMB
GOLD 0.3 1.7 0.7 4.1 20.2 7.9 ESA wrt COMB
FAIR -1.5 2.2 0.0 3.0 12.9 6.8 ESA wrt COMB
KOKB -0.6 2.4 -0.1 4.3 7.0 8.6 ESA wrt COMB
TIDB -2.5 2.6 -2.8 4.4 -0.3 9.1 ESA wrt COMB
YAR1 5.9 2.0 -2.6 5.0 2.0 8.3 ESA wrt COMB
WTZR -1.0 2.5 3.3 3.3 -6.2 7.1 ESA wrt COMB
KOSG -1.1 2.4 1.9 3.1 -19.6 6.8 ESA wrt COMB
Core sites NOT used
MADR -0.6 2.9 3.4 5.3 -29.6 10.3 ESA wrt COMB
Additional Sites
FORT -8.7 3.8 11.6 13.9 -33.6 13.0 ESA wrt COMB
AREQ 0.5 3.0 -1.8 10.5 16.5 9.8 ESA wrt COMB
MCM4 -1.8 5.9 8.9 6.0 72.6 13.3 ESA wrt COMB
GUAM 2.4 3.8 -5.3 17.1 -0.9 15.4 ESA wrt COMB
KIT3 4.9 4.1 -8.5 6.7 -0.6 7.9 ESA wrt COMB
[Mailed From: Tom Herring <tah at mtglas.mit.edu>]
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