DPOD: DORIS extension of the ITRF for Precise Orbit Determination


The computation of the DPOD2014 solutions by the IDS Combination Center (CC) started in 2016.

The set of coordinates/velocities herein is the result of a five-step process:

  1. Computation of a DORIS position and velocity cumulative solution from the latest IDS combined series.
  2. From the previous DPOD2014 version, update of positions and velocities for the DORIS stations showing coordinate (resp. velocity) differences larger than XX mm (resp. YY mm/yr).
  3. Addition of the DORIS stations with observations before 1992 from DPOD2008 v1.14 (after alignment to ITRF2014).
  4. Addition of the newest DORIS stations not already in the IDS combined series from the DORIS mails.
  5. Validation:
    • IDS CC internal validation (including position and velocity differences wrt ITRF2014, previous release…).
    • Orbit validation by Pascal Willis (IGN), Frank Lemoine (NASA), Alexandre Couhert (CNES) and Nikita Zelensky (SGT).

The positions and velocities are given at epoch 2000.0.

The DPOD2014 solutions are available in both SINEX (.snx; description) and text (.txt; description given in header of product files) formats. 

All the details on the DPOD2014 elaboration and validation can be found in Moreaux et al. (in preparation).

dpod2014 01 network small 


DPOD2014 releases available at CDDIS and IGN:

  • March 2017 – First version - dpod2014_01 - technical report



DORIS coordinates based on ITRF2008 for POD

  • Product available at CDDIS and IGN
  • Detailled description at IPGP
  • Citation:
  • Willis, P.; Zelensky, N.P.; Ries, J.; Soudarin, L.; Cerri, L.; Moreaux, G.; Lemoine, F.G.; Otten, M.; Argus, D.F.; Heflin, M.B., 2016.
    DPOD2008, a DORIS-oriented Terrestrial Reference Frame for Precise Orbit Determination,
    IAG SYMPOSIA SERIES,143, 175-181, DOI: 10.1007/1345_2015_125


DORIS coordinates based on ITRF2005 for POD

  • Product available at CDDIS and IGN
  • Detailled description at IPGP
  • Citation:
  • Willis, P.; Ries, J.C.; Zelensky, N.P.; Soudarin, L.; Fagard, H.; Pavlis, E.C.; Lemoine, F.G., 2009.
    DPOD2005 : An extension of ITRF2005 for Precise Orbit Determination,
    ADVANCES IN SPACE RESEARCH, 44(5), 535-544, DOI: 10.1016/j.asr.2009.04.018


DORIS coordinates based on ITRF2000 for POD

  • Product available at CDDIS and IGN
  • Citation:
  • Willis, P; Ries, JC. 2005.
    Defining a DORIS core network for Jason-1 Precise Orbit Determination based on ITRF2000, Methods and realizations,
    JOURNAL OF GEODESY 79 (6-7):370-378, DOI:10.1007/s00190-005-0475-9