General concepts
  Splinter meeting
ITRF Products
  ITRF solutions
  VO Corner
Domes Numbers
   DOMES description
   DOMES request
IERS Network
  Network description
  Local surveys
  Site Information and Selection
Get ITRF coord.
  Get coordinates
  Selected points
ITRF Mailing list
Site map | About this site
Search by DOMES number :   
  ITRF2005 : Input data

IDS-LCA solution

L. Soudarin (CLS)
J.F. Crétaux (LEGOS-GRGS)

A series of weekly station coordinates and daily pole coordinates has been computed using 13 years (January 1993 to December 2005) of DORIS measurements collected by the instruments onboard SPOT2, SPOT3, SPOT4, SPOT5, TOPEX/Poseidon and ENVISAT. The tracking data are processed nominally on 3.5-day arc (half a week of the GPS calendar) for all the 6 satellites using the GINS/DYNAMO software of the GRGS. Individual normal equations are accumulated to form weekly combined matrices. The inversion of these matrices yields the weekly solutions for the geodetic parameters. This time series of site and pole coordinates is expressed in free network with loose constraints (10 meter and 500 mas respectively). The coordinate solutions are expressed at the median epoch of the week. Pole coordinates are estimated daily at 12:00. The gravity field model used in the orbit computation is GRIM5-C1.

PREVIOUS 2 / 2  
ITRF Website - Jan 2016 - IGN ©