{\rtf1\ansi\ansicpg1252\deff0\deflang1036{\fonttbl{\f0\fnil\fcharset0 Courier New;}{\f1\fswiss\fcharset0 Arial;}} {\*\generator Msftedit 5.41.15.1515;}\viewkind4\uc1\pard\f0\fs20 +FILE/REFERENCE \par DESCRIPTION GEOSCIENCE AUSTRALIA \par OUTPUT SSC, XPO, YPO - SINEX \par CONTACT Ramesh.Govind@ga.gov.au \par SOFTWARE GEODYN v0511, SOLVE v200201.01, write_doris_sinex \par HARDWARE Mingus:- HP RP5470 (L2000), HP-UX 11.0 \par INPUT ENVISAT, SPOT-2, SPOT-4, SPOT-5 Range Rate Data \par -FILE/REFERENCE \par +FILE/COMMENT \par * general: \par * - analysis center Geoscience Australia \par * - technique DORIS \par * - software GEODYN II, SOLVE, Write_Doris_Sinex \par * dynamic model: \par * - gravity field \par * + static component GGM02C \par * + maximum degree and order 160 x 160 \par * + time dependent component C(2,0),C(2,1),S(2,1) \par * - GM [m**3/s**2] 398600.4415D9 \par * - solid earth tides IERS2003 \par * - ocean tides Ray GOT00 \par * - atmospheric gravity NCEP/Petrov 6hr 50X50 \par * - annual time Variable gravity Applied; GGM02C 20X20 \par * - atmospheric tides not applied \par * - direct solar radiation applied \par * - albedo applied \par * - earth shine not applied \par * - thermal forces applied \par * - dynamic polar motion applied \par * - empirical accelerations\tab\tab Jason, Envisat, Spot-2, Spot-4, Spot-5 \par * once-per-rev along track, \par * once-per-rev cross track estimated \par * once/day -- (7X per arc) \par * - drag MSIS Empirical Drag Model \par * - third body attraction Sun, Earth's Moon, Mercury, Venus, Mars, \par * Jupiter, Saturn, Uranus, Neptune \par * from DE1403 (GSFC) \par * - relativistic effects applied (PPN @ GR) \par * reference frame: \par * - station coordinates \par * + a priori values ITRF2005 \par * + estimated all \par * + reference point Base of DORIS antenna with zero ecc; \par * antenna phase offset applied (2 GHz) \par * A=Alcatel=510mm; B=Starec=487mm \par * + permanent tide correction IERS convention \par * - station velocities \par * + a priori values ITRF2005 \par * + estimated No \par * - earth orientation parameters \par * + a priori values IERS C04-05 \par * + frequency [days] 1 \par * + estimated yes: Xpole, Ypole at noon \par * - precession IERS2003 \par * - nutation IERS2003 \par * - station deformations: \par * + tidal uplift Love model \par * (h2=0.609, l2=0.0852) \par * + ocean loading Scherneck model based on Ray GOT99.2 tide\par * + atmospheric pressure loading not applied \par * - geocenter \par * + motion no \par * + tidal frequencies yes, GOT99.2 model included with OL model\par * - pole tide applied \par * - definition of origin from station coordinates \par * - definition of orientation ITRF2005 a priori \par * (constrained at > 1 m) \par * measurement model: \par * - satellite used Jason, Envisat, Spot-2,4,5 \par * \par * - frequency of observations 2 GHz \par * \par * - biases: \par * +Measurement Biases (range rate) biases estimated pass by pass \par * for each station/satellite \par * combination \par * + time bias no biases estimated \par * + tropospheric bias once per pass for each satation estimated\par * \par * - data weighting: 2 mm/sec for all stations/satellites \par * Core (Operational) Sites 1 metre \par * - center of mass [m] CoM offset for each satellite as per \par * cnes document CO-SP-D0-OP-2460-CN \par * Satellite Mass and CoM corrections from \par * web page: http://ids.cls.fr/html/analysi\par * - model for tropospheric delay \par * - minimum elevation [deg] 10 \par * - relativity scale LET \par * - speed of light [m/s] 299792458 \par * - relativistic effects applied (GR) \par * integration: \par * - arc length 7 days \par * - integrator Cowell 11th order \par * - step-size [s] Jason 30 secs; Envisat 20 secs; Spot-2,4\par * - estimated parameters station coordinates \par * Xpole, Ypole at 1-day intervals; \par * satellite state-vector; \par * satellite accelerations (described above\par * drag coefficient estimated \par * (Jason 8 hourly, Envisat 1/day, SPOT-2,4,\par * measurement biases 1/pass for all statio\par * - constraints 1 m on station coordinates \par * and equivalent for EOPs; \par * 2.2 ms and 30.2 mas \par \f1\par }