Data Analysis Summary of the DORIS weekly SINEX series used in the IDS combination for the realization of ITRF2014
Sinex Series
Name	grgwd40	gscwd23	gopwd43	esawd10	ignwd15	inawd08
Description form	TBD	TBD	TBD	TBD	TBD	TBD
Analysis Center
Name	CNES/CLS	NASA/GSFC	GOP	ESA/ESOC	IGN	INASAN
Contact	H. Capdeville	F. Lemoine	P. Stepanek	M. Otten	P. Willis	S. Kuzin
Additionnal contacts	J.M. Lemoine, L. Soudarin	D. Chinn	N/A	N/A	N/A	S. Tatevian
Software
Name and version	GINS v 13.2d1	GEODYN	Bernese 5.0 (DORIS development version)	NAPEOS 3.7	GIPSY-OASIS II	GIPSY-OASIS II (v. 6.2)
SINEX Method (NEQ or COV)	COV	NEQ	COV	NEQ	COV	COV
Data weights (data reduction)	0.3 mm/s	2.0 mm/s (upweighted at NEQ stage, sat by sat basis)	3 mm (range difference)	0.5 mm/s	0.51 mm/s for SPOT2, SPOT3, SPOT4, TOPEX, ENVISAT, CRYOSAT2; 0.4 mm/s for SPOT5, JASON2, HY2A and SARAL	0.51 mm/s for SPOT2, SPOT3, SPOT4, TOPEX, ENVISAT, CRYOSAT2; 0.4 mm/s for SPOT5, JASON2
If COV, Station Constraint	10 m	N/A	10 m	NEQ	10 m	10 m
If COV, EOP Constraint	15 m	N/A	Xp, Yp 500 mas	NEQ	5 m	5 m
Satellite
satellites included in weekly SINEX	start-end	start-end	start-end	start-end	start-end
SPOT2	03/01/1993 - 18/07/2009	03/01/1993 - 18/07/2009	03/01/1993 - 14/07/2009	03/01/1993 - 13/07/2009	03/01/1993 - 14/07/2009	03/01/1993 - 14/07/2009
SPOT3	30/01/1994 - 16/11/1996	30/01/1994 - 16/11/1996	01/02/1994 - 12/11/1996	02/02/1994 - 12/09/1996	02/02/1994 - 14/11/1996	01/02/1994 - 13/11/1996
SPOT4	03/05/1998 - 22/06/2012	03/05/1998 - 31/12/2012	10/05/1998 - 22/06/2013	03/05/1998 - 24/06/2012	01/05/1998 - 18/06/2013	01/05/1998 - 23/06/2013
SPOT5	16/06/2002 - 27/12/2014	16/06/2002 - 31/12/2012	16/06/2002 - 30/08/2014	17/06/2002 - 31/12/2013	11/06/2002 - 31/12/2013	11/06/2002 - 31/12/2013
TOPEX	03/01/1993 - 30/10/2004	03/01/1993 - 30/10/2004	03/01/1993 - 30/10/2004	03/01/1993 - 31/10/2004	01/01/1993 - 01/11/2004	03/01/1993 - 01/11/2004
ENVISAT	21/07/2002 - 07/04/2012	21/07/2002 - 07/04/2012	21/07/2002 - 07/04/2012	21/07/2002 - 07/04/2012	11/04/2002 - 08/04/2012	02/06/2002 - 08/04/2012
JASON1	31/10/2004 - 12/07/2008	31/10/2004 - 12/07/2008	N/A	TBD	N/A	N/A
JASON2	13/07/2008 - 27/12/2014	13/07/2008 - 31/12/2012	13/07/2008 - 30/08/2014	14/07/2008 - 31/12/2013	12/07/2008 - 31/12/2013	12/07/2008 - 31/12/2013
CRYOSAT2	20/06/2010 - 27/12/2014	20/06/2010 - 31/12/2012	30/05/2010 - 30/08/2014	30/05/2010 - 31/12/2013	30/05/2010 - 31/12/2013	30/05/2010 - 31/12/2013
HY2A	02/10/2011 - 27/12/2014	TBD	01/01/2012 - 30/08/2014	02/10/2011 - 31/12/2013	01/10/2011 - 31/12/2013	N/A
SARAL	17/03/2013 - 27/12/2014	TBD	N/A	TBD	15/03/2013 - 31/12/2013	N/A
Arc cut
Arc lengths	3.5 days nominally (minimum 1 day)	7.0 days, typically	1 day	1 day	1 day	1 day
Handle of Manoeuvers	Break arc and Restart at 12am or 12pm; estimated from 2012/01/01	Truncate arc before maneuver. Restart 1-2 hrs afterward.	daily arc not processed	Included for all satellites with manoeuvre info, others excluded for that day	Break arc and start or end at 12:00	Break arc and start or end at 12:00
Handle of Data gaps	Arcs truncated for large data gaps and Restarted.	Arcs truncated for large data gaps and restarted.	daily arcs with large data gaps not processed	Nothing	daily arcs with large data gaps not processed	daily arcs with large data gaps not processed
Additional margins	6hrs before and 6 hrs after for POD but not in SINEX	None	None	None	3hrs before and 3 hrs after for POD but not in SINEX	3hrs before and 3 hrs after for POD but not in SINEX
Reference System
Earth reference system	DPOD2008v12	DPOD2008v12	DPOD2008v12	DPOD2008v12	DPOD2008 v1.13	DPOD2008 v1.13
Celestial reference system	inertial J2000	inertial J2000	inertial J2000	inertial J2000	inertial J2000	inertial J2000
Polar motion and UT1	IERS C04 08	IERS C04	IERS C04	IERS C04 08	IERS Bulletin A	IERS Bulletin A
Background C21, S21		IERS 2010 (Equation 6.5, Petit and Luzum, 2010)	IERS 2010 Conventions	IERS 2010 (Equation 6.5, Petit and Luzum, 2010)	IERS 2003	IERS 2003
Pole model		IERS 2010, (Table 6.6, Petit & Luzum, 2010)	IERS 2010 Conventions	IERS 2010, (Table 6.6, Petit & Luzum, 2010)	IERS 2010	IERS 2010
Precession/Nutation	IERS 2010 using NRO origin	IERS 2003	IERS 2003	IERS 2010	IERS 2010	IERS 2010
Station coordinates	DPOD2008v12	DPOD2008v12	DPOD2008v12	DPOD2008v12	DPOD2008 v1.13	DPOD2008 v1.13
Displacement of reference points
Solid Earth tidal displacement	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions
Ocean loading	FES 2012	GOT4.8	FES 2004	EOT11a	FES 2004	FES 2004
Tidal atmospheric loading	S1/S2 Ray & Ponte (2003)	none	N/A	S1/S2 Ray & Ponte (2003); Also P1, K1; T2, R2.	not applied	not applied
Non tidal atmospheric loading	none	not applied	N/A	none	not applied	not applied
Solid pole tide displacement	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions
Ocean pole tide displacement	none	Applied.	N/A	not applied	applied	applied
Tidal Geocenter		Applied, GOT4.7	N/A
Satellite reference
Mass and center of gravity	initial values and time evolution from IDS files "sat"mass.txt	Initial values and time history from IDS files.	Initial values from IDS files	Initial values and time history from IDS files.	Initial values and time history from IDS files	Initial values and time history from IDS files
Attitude Model	nominal laws	Attitude model, generally; Quaternions for off-nominal TOPEX arcs; Quaternions for Jason-1, Jason-2. Ejo/TU Delft quaternions for Cryosat-2	nominal laws, GSC tunned for SPOTs	nominal laws	nominal laws	nominal laws
Gravity
Gravity field (static)	EIGEN-6S2	GOCO02s	EIGEN-6S2 after 2002.0, EIGEN-GL04S1 before 2002.0	EIGEN-6S2	EIGEN-6S2.extended.v2.gfc	GOCO2S
Gravity field (time varying)	EIGEN-6S2 up to degree 95 including time variable terms up to degree 50 (bias & drift per yr from 2002 to 2012, periodic 18.6, 1, 0.5yrs)	(1) to 5x5 - fit to SLR,DORIS time series; (2) > 5x5. Annual terms from GSFC-derived GRACE solutions.	EIGEN-6S2 after 2002.0,var. terms up to deg. 50. No harmonic terms before 2002.0	EIGEN-6S2 up to degree 120 including time variable terms up to degree 50 (bias & drift per yr from 2002 to 2012, 1, 0.5yrs)	from EIGEN-6S2.extended.v2.gfc	(1) to 4x4 - fit to SLR,DORIS time series; (2) > 4x4. Annual terms from GSFC-derived GRACE solutions
Solid Earth tides	IERS 2010 conventions	IERS 2003	IERS 2010 conventions	IERS 2010 conventions	IERS 2010	IERS 2010
Ocean tides	FES 2012 (32 principal waves, + 60 admittance waves) up to degree 50	GOT4.8	FES 2004	EOT11a up to degree order 50	FES 2004	FES 2004
Atmospheric gravity	3hr ERA-interim / ECMWF up to degree 50	ECMWF-6hr (Re-analysis) to 50x50	ECMWF-6hr up to 20X20	AGRA-6hr to 20x20	not applied	not applied
Air Tides		Ray and Ponte (2003), S1, S2; K1, P1, R2, T2
Non tidal oceanic gravity	TUGO R12 up to degree 50 TUGO R12 up to degree 50	N/A	N/A	N/A	not applied	not applied
Atmospheric tides	none (considered through the ECMWF atmospheric data)	Terms removed from ECMWF fields applied separately	N/A	none	not applied	not applied
Earth pole tide	IERS 2010 conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions
Ocean pole tide	Desai 2002 up to degree 12	Desai, 2002. Applied to 50x50	C21, S21 IERS Conventions 2010	IERS 2010 Conventions	IERS 2010 Conventions	IERS 2010 Conventions
Third bodies	Sun, Moon, Mars, Venus, Jupiter, Saturn, Uranus and Neptune ephemeris : DE421 (JPL)	Sun, Moon, Planets: DE403 (JPL)	Sun, Moon, Major Planets DE405	Sun, Moon, Planets: DE405 (JPL)	Sun, Moon, Planets: DE421 (JPL)	Sun, Moon, Planets: DE421 (JPL)
Surface forces and empiricals
Radiation Pressure model	Thermo-optical coefficient from pre-launch box and wing model, with smoothed Earth shadow model; models from CNES document for all satellites except tuned macromodels for Spot-2, -3, -4, Jason2	SPOT-2, SPOT-3: Macromodel Updated from LeBail et al. (2010); SPOT-4: LeBail et al. (2010); SPOT-5: Le Bail et al. (2010) + variable solar array pitch modelled after January 2008; Cryosat2: CNES (7plate) macromodel; Jason-2: CNES (Modified macromodel); TOPEX: Marshall et al. (1995), Marshall and Luthcke (1994); University of College London (UCL) models for Jason-1, and Envisat.	Thermo-optical coefficient from pre-launch box and wing model, with smoothed Earth shadow model; models from CNES document for all satellites except tuned macromodels for Spot-2, -3, -4	CNES model for all satellites except for Jason-1/2 (tuned), TOPEX (GSFC values) and Enivsat (ANGARA model)	CNES model for all satellites except for Jason-2 (tuned) and Cryosat2 (modified CNES 7plate macromodel)	CNES model for all satellites except for Jason-2 (tuned) and Cryosat2 (modified CNES 7plate macromodel)
Radiation pressure scale coefficient	1 coef/day but strongly constrainted (1. e-4) to: 1.03 for Topex; 1.07 for Spot-2; 1.07 for Spot-3; 1.16 for Spot-4; 1.05 for Spot-5; 1.05 for Envisat; 0.94 for Jason-1, 0.97 for Jason-2; 1.00 for Cryosat-2; 0.86 for HY-2A; 1.00 for Saral	Cr=1.00 for satellites except, For Jason-2: Cr= 0.945; For Envisat Cr=1.0041747;	1 coeff/day. First iteration without 1-rev parameters, in second iteration constrained (1.e-1)	fixed, TOPEX 1.03 SPOT-2/3 1.08 SPOT-4 0.98 SPOT-5 1.04 JASON-1 1.0 JASON-2 0.98 ENVISAT 0.98 CRYOSAT-2 1.0 HY-2A 1.0	fixed: TOPEX 1.03; SPOT-2/3 1.08; SPOT-4 1.13; SPOT-5 1.03; JASON-2 0.92; ENVISAT 1.02; CRYOSAT2 1.05; SARAL 1.08; HY2A 0.88	fixed: TOPEX 1.03; SPOT-2/3 1.08; SPOT-4 1.13; SPOT-5 1.03; JASON-2 0.92; ENVISAT 1.02; CRYOSAT2 1.05
Earth radiation	Albedo and IR pressure values interpolated from ECMWF 6hr grids	Knocke et al. (1988)	apriori model using CERES data	Monthly mean Albedo and IR maps at 2.5x2.5 degrees	Albedo correction applied	Albedo correction applied
Atmospheric density model	DTM 94, with best available solar activity	MSIS86	MSIS86	MSIS2000	DTM94	DTM2000
Drag coefficients	Adjusted; Spots, Envisat, Cryosat2, HY-2A, Saral: 1 coef/4 hours (1/1hr in high solar activity periods) ; Topex,Jasons: 1 coef/half day	Cd/8hrs (TOPEX, Jason-1, Jason-2); Cd/1-2 hrs for 800-km satellites depending on solar flux.	adjusted 1 coeff./30 minutes for 800-km atellites, 1 coeff./6 hours for others	TOPEX, Jason 4 a day rest 10 drag coefficients a day	Cd/8hrs (TOPEX, Jason-2); Cd/1hr for SPOT-2,3,4,5, ENVISAT, CRYOSAT2, HY2A and SARAL	Cd/8hrs (TOPEX, Jason-2); Cd/1hr for SPOT-2,3,4,5, ENVISAT, CRYOSAT2
1/rev empiricals	2 coeff cos-sin /orbital period in normal direction ; 2 coeff cos-sin /orbital period in tangential direction ; per arc	Opr/day along+ cross-track	Opr/day along (cross not adjusted)	Opr/day along+ cross-track	Opr/day along + cross-track	Opr/day along + cross-track
DORIS measurements
Troposphere Model	GPT2/VMF1	Saastamoinen	Saastamoinen	Saastamoinen	none	none
Weather (meteorological data)		GPT	GPT	GPT	not used	not used
Troposphere mapping function		GMF	GMF	GMF	VMF1	GMF
Troposphere correction	One zenith delay/pass (wet tropo scale factor adjusted) + one daily tropospheric gradient per station in North & East directions	Scale factor/pass estimated for wet correction only.	One zenith delay/pass (wet tropo scale factor adjusted)	One zenith delay/pass  (wet tropo scale factor adjusted) + one daily tropospheric gradient per station in North & East directions	wet tropospheric delay estimated per station with reset for some passes only if separated by more than 20 minutes	wet tropospheric delay estimated per station with reset for some passes only if separated by more than 20 minutes
2nd order ionosphere	Not applied	Not applied	N/A	Not applied	Not applied	Not applied
Frequency	1 frequency bias adjusted per pass	Range-rate bias adjusted/pass; Change in nominal beacon frequency accommodated with modification of partial derivatives.	1 frequency bias adjusted per pass	Range-rate bias adjusted/pass; Change in nominal beacon frequency accommodated with modification of partial derivatives.	1 frequency bias adjusted per station clock if separated by more than 20 minutes + 1 frequency bias per satellite clock (except 1) if separated by more than 20 minutes	1 frequency bias adjusted per station clock if separated by more than 20 minutes + 1 frequency bias per satellite clock (except 1) if separated by more than 20 minutes
Relativity	Schwarzschild model + Lense-Thirring + geodesic precession	Schwarzschild model + Lense thirring + geodesic precession	Schwarzschild model + Lense-Thirring + geodesic precession	Schwarzschild model + Lense thirring + geodesic precession	Schwarzschild model + Lense-Thirring + geodesic precession	Schwarzschild model + Lense-Thirring + geodesic precession
Weight	models: 0.3 mm/s; measurements: derived from observation standard deviation in data files	2 mm/s. upweighted per satellite at NEQ level.	3 mm (range difference)	0.5mm/s	0.51 mm/s for SPOT2, SPOT3, SPOT4, TOPEX, ENVISAT, CRYOSAT2; 0.4 mm/s for SPOT5, JASON2 , HY2A and SARAL	0.51 mm/s for SPOT2, SPOT3, SPOT4, TOPEX, ENVISAT, CRYOSAT2; 0.4 mm/s for SPOT5, JASON2
Elevation angle cutoff	12 degrees	10 degrees	10 degrees	7 degrees	7 degrees	12 degrees
Downweighting law	Downweighting law for elevation <= 20 deg; Weight of the observation is multiplied by the factor elevation**2/400 with elevation in degrees)	none	none	TBD (currently sin(elevation) after 2002)	1/sqrt(sin(elevation))	1/sin(elevation)
Satellite system	Center of mass - antenna phase center vector computed from macro model + attitude law; no phase law applied	tracking point offset applied using offset information and attitude law and quaternions for spacecraft.	Center of mass - antenna phase center vector computed from macro model + attitude law; no phase law applied	Center of mass - antenna phase center vector computed from macro model + attitude law; no phase law applied	Center of mass - antenna phase center vector computed from macro model + attitude law; no phase law applied	Center of mass - antenna phase center vector computed from macro model + attitude law; no phase law applied
Ground system	Phase centre / reference point vector from manufacturer values; phase law applied (Alcatel, Starec version 2013)	Phase correction + vertical eccentricity applied in GEODYN or through modification of DPOD2008v12 station coordinates	Phase centre / reference point vector from manufacturer values; phase law applied (Alcatel, Starec version 2013)		Phase centre / reference point vector from manufacturer values; phase law applied (Alcatel, Starec)	Phase centre / reference point vector from manufacturer values; phase law not applied (Alcatel, Starec)
DORIS System Time Bias		Model applied for TOPEX/Poseidon derived from SLR-DORIS arcs.	N/A			no bias correction applied to satellite clock
South Atlantic Anomaly	Corrective model for Jason-1; corrected measurements for Spot-5 from 2006 only	Corrective model applied for Jason-1; Corrective model applied for SPOT-5 (2006.0 - onward)	Corrected measurements for Spot-5 (2006.0 - onward). Jason-1 data not used at all	Corrective model for Jason-1; corrected measurements for Spot-5 from 2006 only	Jason-1 data not used at all; corrective model applied for SPOT-5 (2006.0 - onward) . A few stations removed for SPOT-5 data (Arequipa, Cachoeira, Easter Island, Kourou)	Jason-1 data not used at all; corrective model applied for SPOT-5 (2006.0 - onward)