[IGSREPORT-25034] Wk 1925 MIT T2 RNAAC Analyis Report
Tom Herring
tah at chandler.mit.edu
Tue Jan 24 23:14:23 PST 2017
Author: Thomas Herring
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MIT R/GNAAC ANALYSIS REPORT GPS-WEEK 1925 Dates: 16nov27 to 16dec03
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MIT (Massachusetts Institute of Technology)
Room 54-332
77 Massachusetts Avenue,
Cambridge, MA 02139
e-mail: tah at mit.edu
tel: (617)253-5941 (Tom Herring)
fax: (617)253-6385
PRODUCTS GENERATED:
The following products are generated and uploaded into CDDIS @ NASA/GSFC
MIT1925p.SNX RNAAC combination sinex file from all available analysis centers
with the GNAAC sinex files.
MIT1925p.SUM Name of this summary file
0.0 Starting Week 1632, Switched to IGb08 realization of the reference frame.
0.1 Starting Week 1395, adopted IGS05 for reference frame. The combination
is now minimum constraint.
0.2 Starting Week 1239 we adopted IGb00 reference system (given in
IGS03P33_RS99.snx)
0.3 Starting Week 1016 we starting using ITRF97
0.4 Starting Week 0939 we starting using ITRF96 and its reference site list.
0.5 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 1925
IMPACT OF RNAACs on GNAAC Loose solution
CENTER RESULTS
For Center NCL VARIANCE FACTOR 1
Site dN +- dE +- dU +- Center
(mm) (mm) (mm) (mm) (mm) (mm)
No uniques sites for center NCL
Giving coordinate adjustments for all sites
LROC 0.5 0.5 -0.3 0.5 0.6 1.7 Center NCL
MORP 0.0 0.5 0.1 0.4 -0.1 1.5 Center NCL
VILL 0.4 0.4 -0.5 0.4 0.1 1.6 Center NCL
BRST 0.1 0.5 -0.3 0.5 -0.5 1.6 Center NCL
YKRO 0.6 0.4 0.6 0.5 -0.5 1.7 Center NCL
HOFN -0.0 0.4 -0.0 0.3 -0.3 1.2 Center NCL
MAS1 0.3 0.3 -0.2 0.3 -0.0 1.3 Center NCL
DAKR 0.6 0.3 -0.5 0.4 0.0 1.4 Center NCL
SCOR -0.2 0.4 0.8 0.3 0.0 1.4 Center NCL
REYK -0.7 1.1 0.4 1.0 -2.7 3.7 Center NCL
PDEL 0.9 0.4 -0.8 0.4 2.6 1.4 Center NCL
FLRS -1.8 0.8 3.8 0.7 7.9 2.6 Center NCL
BRFT 1.1 0.5 -0.5 0.6 -0.1 2.1 Center NCL
SAVO 0.4 0.6 -0.3 0.7 -0.6 2.3 Center NCL
CHPI 0.8 0.4 -0.3 0.4 -0.2 1.4 Center NCL
QAQ1 -0.1 0.4 0.1 0.3 -0.4 1.2 Center NCL
UFPR -0.6 1.1 -0.8 1.2 -2.9 4.5 Center NCL
KELY -0.3 0.4 0.3 0.3 -0.5 1.5 Center NCL
STJO -0.1 0.4 -0.2 0.3 1.4 1.1 Center NCL
KOUR 0.7 0.4 0.2 0.5 -0.0 1.7 Center NCL
FALK 0.6 0.8 -0.8 0.6 -0.1 2.3 Center NCL
OHI2 0.1 0.4 -0.8 0.3 -1.0 1.2 Center NCL
OHI3 0.4 0.5 -0.7 0.4 0.3 1.5 Center NCL
LMMF 1.5 0.9 -0.2 1.0 4.7 3.5 Center NCL
NAIN 0.0 0.5 -0.0 0.4 1.2 1.4 Center NCL
ALRT 0.2 0.3 0.8 0.3 -0.6 1.8 Center NCL
POVE 1.2 0.7 -1.1 0.9 -2.7 3.0 Center NCL
QIKI 0.0 0.5 -0.2 0.4 -0.4 1.6 Center NCL
PALM 0.0 0.4 -0.7 0.3 -0.0 1.3 Center NCL
CORD 1.0 0.4 -0.4 0.4 0.1 1.4 Center NCL
CRO1 0.5 0.4 -0.1 0.5 1.3 2.0 Center NCL
UNSA 0.4 0.5 -0.4 0.7 0.2 2.6 Center NCL
SCH2 -0.6 0.4 -0.0 0.3 -1.7 1.2 Center NCL
RIO2 -0.1 0.7 -0.9 0.6 -1.7 2.2 Center NCL
BARH 0.3 0.4 -0.4 0.4 -0.8 1.3 Center NCL
THU2 -0.3 0.3 0.9 0.3 -0.3 1.5 Center NCL
THU3 -0.1 0.3 0.7 0.3 -1.2 1.3 Center NCL
SCUB 0.0 0.3 0.3 0.4 0.6 1.4 Center NCL
GODE -0.4 0.5 0.2 0.4 -0.6 1.6 Center NCL
SSIA 0.1 0.4 0.1 0.5 1.3 1.6 Center NCL
GLPS 0.5 0.3 0.5 0.4 1.5 1.3 Center NCL
GUAT 0.4 0.4 0.0 0.4 0.1 1.5 Center NCL
NLIB -0.5 0.6 -0.3 0.5 -0.1 2.2 Center NCL
CHUR 0.1 0.3 0.7 0.3 -3.7 0.9 Center NCL
RESO 0.2 0.9 -0.9 0.8 -2.4 3.6 Center NCL
DUBO -0.6 0.4 0.3 0.3 -1.1 1.2 Center NCL
BAKE 0.1 0.4 1.1 0.3 -2.8 1.2 Center NCL
FLIN -0.5 0.4 1.0 0.3 -3.1 1.3 Center NCL
PIE1 -0.6 0.3 0.3 0.3 1.3 1.1 Center NCL
ISPA 0.1 0.4 0.8 0.4 0.6 1.6 Center NCL
YELL -0.4 0.4 0.6 0.3 -3.4 1.2 Center NCL
GOLD -0.8 0.4 0.6 0.4 0.8 1.4 Center NCL
HOLM 0.2 0.4 0.2 0.3 -1.2 1.4 Center NCL
DRAO -0.6 0.4 0.2 0.3 0.1 1.2 Center NCL
WILL -0.5 0.4 -0.4 0.3 -0.0 1.1 Center NCL
INVK 0.2 0.5 0.3 0.3 -1.2 1.5 Center NCL
WHIT -0.3 0.4 -0.6 0.3 -1.9 1.2 Center NCL
FAIR 0.1 0.5 -0.2 0.3 -1.4 1.5 Center NCL
THTI 0.2 0.7 -0.7 0.9 -2.9 3.2 Center NCL
FAA1 -0.1 0.4 -0.5 0.5 -0.5 1.6 Center NCL
MKEA -1.0 0.4 -0.4 0.5 -0.6 2.0 Center NCL
MAUI -0.8 0.4 -0.2 0.5 0.1 1.4 Center NCL
HNLC -0.3 1.0 -0.1 1.2 -0.2 4.5 Center NCL
NIUM 0.4 0.5 -0.8 0.6 -1.1 2.0 Center NCL
ASPA -0.9 0.4 0.0 0.5 2.6 1.7 Center NCL
CHTI -0.2 0.4 0.1 0.4 0.3 1.3 Center NCL
TUVA -0.2 0.5 -0.4 0.6 1.4 2.0 Center NCL
KIRI -0.7 0.5 0.1 0.5 0.4 1.6 Center NCL
OUS2 0.1 0.4 -0.5 0.3 0.2 1.2 Center NCL
MCM4 1.0 0.6 0.4 0.5 -1.8 2.7 Center NCL
KOUC 0.1 0.6 -1.1 0.7 2.2 2.4 Center NCL
PETS -0.2 0.6 0.6 0.5 -0.7 2.1 Center NCL
MAG0 -0.7 0.5 -0.1 0.4 0.3 1.4 Center NCL
HOB2 -0.5 0.5 0.0 0.5 0.2 1.6 Center NCL
TOW2 0.2 0.4 -0.2 0.5 -0.4 1.6 Center NCL
MOBS -0.2 0.4 -0.1 0.4 0.1 1.3 Center NCL
GUUG -0.3 0.4 -0.2 0.5 -0.2 1.7 Center NCL
CCJ2 -0.7 0.4 0.3 0.5 -0.9 1.8 Center NCL
ALIC 0.4 0.4 -0.1 0.4 0.3 1.6 Center NCL
CEDU 0.0 0.3 -0.5 0.3 0.2 1.2 Center NCL
DARW 0.3 0.4 -0.3 0.5 0.2 1.9 Center NCL
GMSD -0.5 0.4 0.1 0.4 -0.3 1.4 Center NCL
YAKT -0.1 0.6 -0.0 0.4 0.3 1.7 Center NCL
TIXI 0.1 0.4 -0.0 0.3 1.5 1.4 Center NCL
DAEJ -0.6 1.0 0.0 1.0 4.0 3.9 Center NCL
SUWN -0.6 0.5 0.2 0.4 -0.8 1.7 Center NCL
SHAO -0.9 0.4 0.2 0.4 -1.0 1.4 Center NCL
PIMO -1.0 0.5 0.1 0.5 1.4 2.2 Center NCL
KARR 0.4 0.3 0.1 0.4 1.1 1.3 Center NCL
BJNM -0.5 0.4 -0.0 0.4 -0.1 1.3 Center NCL
NNOR -0.2 0.5 0.3 0.6 0.8 2.2 Center NCL
BJFS -0.4 0.4 0.3 0.3 -0.7 1.2 Center NCL
PERT 0.4 0.4 -0.0 0.4 0.7 1.5 Center NCL
CAS1 0.3 0.4 0.6 0.3 -1.0 1.2 Center NCL
ULAB 0.9 0.5 -0.3 0.4 -1.3 1.6 Center NCL
BAKO -0.4 0.3 0.3 0.5 0.6 1.6 Center NCL
XMIS -0.8 0.4 0.8 0.4 0.2 1.4 Center NCL
IRKJ -0.1 0.4 -0.1 0.3 1.1 1.1 Center NCL
COCO 0.6 0.3 1.1 0.4 0.1 1.5 Center NCL
LHAZ -0.1 0.4 -0.1 0.4 -0.8 1.5 Center NCL
NRIL 0.0 0.4 -0.4 0.3 1.9 1.2 Center NCL
URUM 0.1 0.4 0.2 0.4 -2.0 1.4 Center NCL
NVSK -0.1 0.9 0.1 0.7 -2.5 2.8 Center NCL
HYDE -0.0 0.3 -0.0 0.4 0.1 1.3 Center NCL
DAV1 0.1 0.4 0.6 0.3 0.1 1.2 Center NCL
DGAV -0.1 0.4 0.3 0.5 1.1 1.8 Center NCL
DGAR 0.1 0.4 -0.1 0.5 0.8 1.7 Center NCL
KERG 0.1 0.5 0.2 0.4 -0.6 1.6 Center NCL
TASH -0.3 0.6 0.1 0.5 -2.8 2.0 Center NCL
KIT3 -0.3 0.6 -0.2 0.6 -0.6 2.4 Center NCL
MAW1 -0.5 0.4 0.7 0.3 -0.9 1.2 Center NCL
ARTU 0.0 0.5 -0.4 0.3 0.6 1.2 Center NCL
REUN 0.2 0.4 0.1 0.5 0.5 1.6 Center NCL
TEHN -0.0 0.4 -0.2 0.4 -2.1 1.6 Center NCL
ZECK 0.1 0.5 0.1 0.4 -0.8 1.6 Center NCL
MAL2 0.4 0.3 0.2 0.4 1.1 1.4 Center NCL
SYOG -0.1 0.4 0.5 0.4 -0.6 1.4 Center NCL
ADIS -0.4 0.3 -0.5 0.3 0.5 1.2 Center NCL
MDVJ 0.2 0.4 -0.4 0.3 1.1 1.1 Center NCL
DRAG 0.1 0.3 -0.6 0.3 0.8 1.2 Center NCL
RAMO -0.1 0.4 -0.5 0.4 1.3 1.6 Center NCL
NICO 0.1 0.4 -0.1 0.4 0.4 1.4 Center NCL
ANKR 0.3 0.5 -0.1 0.4 0.7 1.8 Center NCL
RBAY 0.6 0.5 0.9 0.6 1.4 1.9 Center NCL
GLSV -0.3 0.4 -0.2 0.3 1.7 1.2 Center NCL
ZAMB 0.3 0.4 0.8 0.4 1.4 1.4 Center NCL
HARB 0.3 0.4 0.7 0.4 1.4 1.5 Center NCL
HRAO 0.3 0.7 0.5 0.8 2.9 2.9 Center NCL
SOFI 0.0 0.4 -1.2 0.4 -0.1 1.6 Center NCL
UZHL -0.2 0.4 -0.1 0.4 0.5 1.4 Center NCL
KIRU -0.5 0.4 -0.2 0.4 0.3 1.5 Center NCL
SUTH 0.6 0.5 1.2 0.5 -1.4 1.6 Center NCL
TRO1 -0.7 0.4 -0.0 0.3 1.1 1.3 Center NCL
WIND 0.3 0.6 0.5 0.6 0.7 2.2 Center NCL
MATE -0.1 0.4 -0.0 0.4 1.2 1.4 Center NCL
NOT1 0.1 0.4 -0.3 0.4 0.2 1.4 Center NCL
POTS -0.8 0.4 -0.7 0.3 -0.1 1.2 Center NCL
SPT0 -0.9 0.5 0.4 0.4 -2.2 1.5 Center NCL
WTZR 0.1 0.4 -0.2 0.3 -0.0 1.3 Center NCL
ONSA -0.4 0.4 0.0 0.3 1.5 1.1 Center NCL
NYA1 -0.1 0.4 0.1 0.3 0.3 1.6 Center NCL
PTBB -0.0 0.4 -0.4 0.3 0.0 1.3 Center NCL
NKLG 1.1 0.4 0.5 0.5 -1.7 1.6 Center NCL
GENO 0.3 0.4 0.1 0.4 -0.2 1.4 Center NCL
IENG 0.4 0.3 0.3 0.3 -0.1 1.1 Center NCL
WAB2 0.3 0.3 0.1 0.3 0.1 1.1 Center NCL
GRAS 0.2 0.4 0.1 0.4 0.3 1.3 Center NCL
WSRT -0.1 0.3 -0.5 0.3 -0.4 1.0 Center NCL
BJCO 1.0 0.3 0.1 0.5 0.2 1.5 Center NCL
OPMT -0.5 1.4 0.0 1.1 7.3 4.4 Center NCL
TLSE 0.2 0.4 -0.6 0.3 0.4 1.3 Center NCL
HERS 0.1 0.4 -0.2 0.3 0.1 1.2 Center NCL
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