[IGSREPORT-15988] Wk 1461 MIT T2 RNAAC Analyis Report
Tom Herring
tah at mtglas2.mit.edu
Wed Feb 27 06:38:26 PST 2008
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IGS Electronic Report 27 Feb 06:25:31 PST 2008 Message Number 15988
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Author: Thomas Herring
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MIT R/GNAAC ANALYSIS REPORT GPS-WEEK 1461 Dates: 08jan06 to 08jan12
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MIT (Massachusetts Institute of Technology)
Room 54-820A
77 Massachusetts Avenue,
Cambridge, MA 02139
e-mail: tah at 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
MIT1461p.SNX RNAAC combination sinex file from all available analysis centers
with the GNAAC sinex files.
MIT1461p.SUM Name of this summary file
0.0 Starting Week 1395, adopted IGS05 for reference frame. The combination
is now minimum constraint.
0.1 Starting Week 1239 we adopted IGb00 reference system (given in
IGS03P33_RS99.snx)
0.2 Starting Week 1016 we starting using ITRF97
0.3 Starting Week 0939 we starting using ITRF96 and its reference site list.
0.4 Starting Week 0901 we started using a new apriori file not Non-ITRF94 coordinates
based on the analysis of week 0822-0900 sinex files. This change will
effect the corrdinate corrections given in this summary.
1.0 Analysis Procedures:
(1) Each centers sinex solutions are de-constrained before
combination. When center constraints are available, the
constraints are loosened to +-1 meters.
(2) Covariance matrices from each center are re-scaled based
on the change in chi**2 when the RNAAC's sinex file is
combined with the loose combination of the GNAAC's
sinex files. To generate reasonable sigmas, the scale factor
is set at 0.3 times the chi**2/degree of freedom increment.
(3) Reference frame is defined translation, rotation to the IGS05
reference frame defined with the following sites:
vesl vill madr sfer rabt asc1 hofn mas1 reyk pdel chpi qaq1 braz
kely stjo ohi2 ohi3 lpgs alrt hlfx cord cro1 unsa sch2 riog thu3
sant wes2 conz nrc1 scub gode usno algo mana glps nlib chur dubo
flin mdo1 amc2 pie1 ispa yell gold holm drao quin will whit thti
mkea hnlc kokb aspa chat mcm4 bili noum mac1 petp tidb hob2 tow2
lae1 guam yssk tskb alic cedu jab1 darw tixi daej pimo karr bjfs
pert yar1 wuhn cas1 ulab irkt kunm coco lhaz nril guao novj hyde
dav1 iisc pol2 dgar kerg kit3 maw1 artu reun sey1 bahr mali trab
syog mdvj ramo polv nico mbar glsv harb hrao mets joze suth tro1
trom bor1 mate not1 pots wtzr onsa nya1 nyal nklg cagl zimm gras
wsrt brus
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) The summary below gives
(a) The RMS difference between the GNAAC loose analysis and
the GNAAC+RNAAC loose analysis. If this RMS is small then the
RNAAC combination is not effecting the global coordinates solution
significiantly.
(b) For each RNAAC Center we give:
(b.1) the VARIANCE rescaling factors used (determined as
discussed above) and
(b.2) the adjustment to the apriori coordinates
of the sites for each RNAAC which are not included in the GNAAC
analyses. The apriori coordinates are based on the analysis
of the first five weeks of RNAAC sinex files. When an RNAAC
has no unique sites, the adjustments are given for all sites
in the center based on the analysis from that center alone.
SUMMARY OF POSITIONS FOR WEEK 1461
IMPACT OF RNAACs on GNAAC Loose solution
RMS change over 340 stations: 0.59 mm
CENTER RESULTS
For Center GSI VARIANCE FACTOR 1
Site dN +- dE +- dU +- Center
(mm) (mm) (mm) (mm) (mm) (mm)
2110 -4.4 0.4 6.2 0.4 3.8 1.2 Center GSI
AIRA 1.5 0.6 2.4 0.6 2.9 2.1 Center GSI
KNYA 3.1 0.6 1.3 0.6 5.5 2.0 Center GSI
MZSW 1.4 0.5 2.0 0.5 -6.3 1.4 Center GSI
P124 1.5 0.5 3.7 0.6 8.5 1.6 Center GSI
STK2 6.3 0.5 -2.9 0.5 -5.1 1.2 Center GSI
TKBA 4.3 0.5 1.3 0.5 8.4 1.6 Center GSI
TSK2 2.5 0.5 0.7 0.5 15.4 1.3 Center GSI
For Center SIR VARIANCE FACTOR 1
Site dN +- dE +- dU +- Center
(mm) (mm) (mm) (mm) (mm) (mm)
ANDS 10.6 0.3 11.6 0.3 -17.1 0.5 Center SIR
ANTC -4.4 0.3 45.0 0.3 6.5 0.6 Center SIR
APTO -5.7 0.3 -0.1 0.3 7.8 0.5 Center SIR
AUTF 111.4 0.4 74.1 0.4 13.9 0.8 Center SIR
BANS 35.1 0.3 0.6 0.3 27.1 0.5 Center SIR
BELE 4.5 0.3 -8.0 0.4 3.0 0.6 Center SIR
BERR 4.3 0.3 21.2 0.3 -13.9 0.5 Center SIR
BOAV 3.6 0.3 -6.2 0.3 6.9 0.6 Center SIR
BOGA 8.0 0.3 -4.2 0.3 -20.7 0.6 Center SIR
BOMJ 2.6 0.3 19.1 0.4 -6.9 0.6 Center SIR
BRFT -65.2 0.4 26.5 0.4 15.2 0.7 Center SIR
BUCA 9.1 0.3 16.8 0.3 -23.0 0.5 Center SIR
BUEN 8.8 0.2 25.3 0.3 -38.6 0.5 Center SIR
CALI 14.0 0.3 17.1 0.3 -26.6 0.7 Center SIR
CAM2 7.6 0.3 -1.6 0.3 -41.9 0.5 Center SIR
CART 11.2 0.3 29.2 0.3 -34.3 0.5 Center SIR
CBSB 7.1 0.3 -3.2 0.3 -12.2 0.6 Center SIR
CEFE 3.8 0.4 -7.5 0.4 2.5 0.7 Center SIR
CHET 8.2 0.3 1.2 0.3 -42.4 0.5 Center SIR
CHIH 6.5 0.4 -14.6 0.3 -29.8 0.6 Center SIR
COL2 2.1 0.3 -4.2 0.3 -31.3 0.6 Center SIR
CRAT 13.9 0.4 15.4 0.4 24.6 0.8 Center SIR
CRCS 10.1 0.3 20.7 0.3 -16.3 0.5 Center SIR
CRUZ 4.3 0.2 -1.6 0.3 -9.4 0.5 Center SIR
CUCU 16.9 0.3 21.4 0.3 -27.8 0.5 Center SIR
CUIB 8.3 0.3 -10.0 0.3 -35.4 0.6 Center SIR
CULC -6.6 0.3 -2.6 0.3 -1.6 0.6 Center SIR
DORA 12.5 0.3 20.2 0.3 -25.2 0.5 Center SIR
EXU0 8.4 0.3 -6.3 0.3 -13.0 0.5 Center SIR
FQNE -1.2 0.3 1.0 0.3 -26.3 0.5 Center SIR
GCGT 5.5 0.3 -5.2 0.3 -20.6 0.5 Center SIR
GRE0 10.2 0.3 6.8 0.3 -3.2 0.6 Center SIR
GTK0 9.8 0.3 -4.5 0.3 -9.4 0.5 Center SIR
GVAL 2.4 0.4 26.7 0.4 18.6 0.6 Center SIR
HER2 5.0 0.4 -19.2 0.3 -31.3 0.6 Center SIR
IGM1 0.5 0.3 17.8 0.3 -3.0 0.6 Center SIR
IMBT 2.6 0.3 -4.2 0.3 -2.1 0.6 Center SIR
IMPZ -21.2 0.3 11.6 0.4 242.3 0.6 Center SIR
INEG -14.4 0.3 26.6 0.3 238.6 0.6 Center SIR
LHCL -3.0 0.3 24.8 0.3 9.7 0.6 Center SIR
LPAZ 1.9 0.4 -12.4 0.3 -2.3 0.6 Center SIR
MABA 2.4 0.3 -8.6 0.4 6.3 0.6 Center SIR
MAPA 10.3 0.3 18.2 0.3 -19.4 0.6 Center SIR
MARA 55.5 0.3 -22.9 0.3 -18.9 0.6 Center SIR
MCLA 3.4 0.3 24.7 0.4 6.4 0.6 Center SIR
MECO 0.0 0.3 25.0 0.3 -0.7 0.6 Center SIR
MEDE 1.8 0.3 10.2 0.3 -18.9 0.5 Center SIR
MERI 7.0 0.3 -0.7 0.3 -43.2 0.5 Center SIR
MEXI 33.0 0.4 -26.9 0.4 -21.9 0.6 Center SIR
MOTE 5.0 0.3 -1.1 0.3 -5.3 0.7 Center SIR
MPLA 2.0 0.3 21.6 0.3 -2.6 0.6 Center SIR
MTY2 5.8 0.3 -11.4 0.3 -36.4 0.6 Center SIR
MZAC 0.2 0.3 30.6 0.3 0.5 0.6 Center SIR
MZAS -4.3 0.3 16.7 0.3 1.1 0.6 Center SIR
NAS0 7.8 0.3 -5.3 0.3 -23.7 0.5 Center SIR
NAUS 5.7 0.3 20.6 0.3 -24.8 0.5 Center SIR
NEIA 3.2 0.3 24.0 0.3 9.5 0.7 Center SIR
NEVA 10.5 0.2 18.3 0.3 -29.9 0.5 Center SIR
OAX2 12.3 0.3 5.6 0.3 4.5 0.6 Center SIR
ONRJ -6.8 0.4 4.5 0.4 -4.7 0.6 Center SIR
PARC -3.5 0.4 28.8 0.4 4.5 0.6 Center SIR
PERA 13.3 0.3 23.8 0.3 -30.8 0.6 Center SIR
PMB1 -1.9 0.3 9.5 0.3 -12.6 0.6 Center SIR
POLI -4.8 0.3 13.7 0.4 1.5 0.6 Center SIR
POPA 8.4 0.3 17.3 0.3 -18.1 0.6 Center SIR
POVE -2.4 0.3 21.3 0.3 -23.2 0.5 Center SIR
PPTE 2.4 0.3 21.6 0.3 -0.8 0.7 Center SIR
RECF 1.0 0.4 24.5 0.5 -9.7 0.7 Center SIR
RIOB 1.7 0.2 -2.5 0.3 -16.2 0.5 Center SIR
RIOD -0.9 0.4 17.6 0.4 -6.4 0.7 Center SIR
RWSN -2.5 0.3 21.3 0.3 5.1 0.6 Center SIR
SAGA 1.2 0.3 -3.3 0.3 -9.4 0.6 Center SIR
SALU 4.8 0.3 -6.6 0.4 2.9 0.7 Center SIR
SALV 3.1 0.4 27.0 0.4 8.2 0.7 Center SIR
SAMA 3.1 0.3 -0.3 0.3 -23.1 0.5 Center SIR
SAVO 0.3 0.4 -8.5 0.4 7.3 0.6 Center SIR
SMAR 2.8 0.3 19.1 0.3 -12.7 0.6 Center SIR
SMRT 10.0 0.3 -2.7 0.3 -3.8 0.6 Center SIR
SRNW 0.5 0.3 11.4 0.3 -10.6 0.7 Center SIR
SRZN -2.4 0.3 6.8 0.3 -15.4 0.6 Center SIR
SSA1 1.4 0.4 -10.0 0.4 -1.3 0.7 Center SIR
TAMP 4.4 0.3 -6.0 0.3 -38.1 0.5 Center SIR
TOL2 7.0 0.3 -2.6 0.3 -36.7 0.5 Center SIR
TUNA 9.2 0.3 20.9 0.3 -22.9 0.5 Center SIR
UBAT 2.9 0.3 -2.2 0.4 -7.7 0.9 Center SIR
UBER -0.7 0.3 25.0 0.3 5.5 0.6 Center SIR
UCOR 1.7 0.3 23.3 0.3 3.1 0.6 Center SIR
UFPR 4.3 0.3 -5.5 0.3 0.3 0.6 Center SIR
UGTO -1.4 0.3 -11.3 0.3 -28.9 0.5 Center SIR
UNRO 3.5 0.3 24.5 0.3 -11.0 0.6 Center SIR
UNSJ -2.5 0.3 20.3 0.3 6.3 0.6 Center SIR
UYMO -4.5 0.3 -4.6 0.3 -2.5 0.6 Center SIR
VALL 12.8 0.3 30.8 0.3 -27.7 0.5 Center SIR
VARG 0.6 0.3 24.5 0.4 -3.3 0.7 Center SIR
VBCA -90.0 0.3 -15.1 0.3 -276.4 0.6 Center SIR
VICO 3.4 0.4 19.6 0.4 -6.2 0.6 Center SIR
VIL2 7.7 0.3 -1.0 0.3 -36.8 0.5 Center SIR
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