The International DORIS Service July 2003 – December 2005 report

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IDS Report – July 2003 to December 2005 44 Figure 17. Spectral signature and stability of the non linear, non seasonal, motion in the local frame derived from Doris station coordinates time series over 1993-2004. Upper part: noise spectrum as determined by the Allan variance graph slope. Values in the central square may be considered as white noise. Lower part: Allan standard deviation for a one year sampling time. IGN-JPL values are in abscissa, LEGOS-CLS values are in ordinates. 8.8 IDS CONTRIBUTIONS TO ITRF 2005 Table 11. Modelling Summary for IDS Contributions to ITRF2005 IGN/JPL CLS/LEGOS INASAN Static Gravity GGM01C (120x120) GRIM5C1 (95x95 for ENV./SPOT’s; 70x70 for TOPEX). GGM01C (120x120) Atmospheric Not applied Applied from ECMWF Not applied Gravity atmospheric pressure (6h 3D grids) over land, inverted barometer model over oceans
IDS Report – July 2003 to December 2005 45 Earth GM Value GGM01C GRIM5C1 GGM01C Time-Variable Gravity GGM01C GRIM5C1 GGM01C Ocean Tides FES2002 FES2002 Ocean Loading FES2002 FES2002 FES2002 Earth Tides IERS2003 IERS2000 IERS2003 Precession/Nutation Precession: IAU 1976 Precession: IAU 1976 Precession: IAU 1976 Nutation: IAU 1980 Nutation: IAU 1980 Nutation: IAU 1980 Atmospheric Drag DTM94 DTM94 DTM94 Albedo/IR Not applied Applied using 4.5° radiance grids from ECMWF Not applied A priori station IGN04D02, Updated ITRF2000 IGN04D02, Updated coordinates continuously. Updated continuously with IGN DORISmails. continuously. Elevation cutoff Before 18-9-2005: None After 18-09-2005: 15° 12° None Pole Tide applied applied applied Nonconservative Forcesmacromodel. CNES CNES CNES Satellite & Ground Applied from DORIS Applied from DORIS Applied from DORIS Antenna Offset data. data for data after Dec data. Corrections 28 2003 (computed before this date) except ENVISAT (applied from DORIS data since mission start) EOP (a priori) Bulletin B Bulletin B Bulletin B Arclengths Data: 24 hr; 3.5 days Data: 24 hr; Arclength: 30hrs Arclength: 30hrs Drag Parameters Cd/6-hrs (SPOTs and Cd/4-hrs (ENV. Spots); Cd/6-hrs (SPOTs and adjusted per arc ENVISAT). None for Cd/12-hrs (TOPEX). ENVISAT). None for TOPEX. Adjust 1 TOPEX. Adjust 1 constant accels. constant accels. along- along-track per arc track per arc (30hr) for (30hr) for TOPEX TOPEX Opr Parameters Along & cross-track Along & cross-track Along & cross-track adjusted per arc per 30-hr arc. /arc (SPOTs, Topex) /day (ENVISAT) per 30-hr arc. Troposphere Scale Per satellite-station Per satellite-station Per satellite-station Adjustment pass, with time pass. pass, with time constraints constraints (Willis et al. 2005) (Willis et al. 2005) Constraints for 10 m X,Y,Z 10 m X,Y,Z 10 m X,Y,Z Coordinate and 5 m polar motion 500 mas polar motion 5 m polar motion EOP Solutions 5 mas/d pole rate 5 mas/d pole rate Software Used Update to GINS 4.1 (GINS 6.1 for GIPSY/OASIS 4.0.3 GIPSY/OASIS 4.0.3 data from 2006.01) (Linux version) For LCA: Atmospheric loading applied from 6 hours ECMWF 3D pressure grids
Page 1 and 2: The International DORIS Service Jul
Page 3 and 4: IDS Report - July 2003 to December
Page 5 and 6: 1 INTRODUCTION IDS Report - July 20
Page 11 and 12: 4.2 WEB AND FTP SITES 4.2.1 IDS WEB
Page 13 and 14: 4.3 THE MAIL SYSTEM IDS Report - Ju
Page 17 and 18: • Mount Stromlo (Australia) • C
Page 19 and 20: 5.4 IDS EXPERIMENTS IDS Report - Ju
Page 23 and 24: 7 IDS DATA FLOW COORDINATION IDS Re
Page 25 and 26: 7.2 DORIS DATA IDS Report - July 20
Page 29 and 30: 8 ANALYSIS COORDINATION IDS Report
Page 33 and 34: Analysis Center (AC) DORIS IGN-JPL
Page 43: 8.7 ANALYSES OF STATION STABILITY I
Page 57 and 58: 14 CONCLUSION IDS Report - July 200
Page 61 and 62: 16 REFERENCES IDS Report - July 200

The International DORIS Service July 2003 – December 2005 report

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