2. Home>
  3. Analysis coordination>
  4. Combination Center>
  5. Cumulative solution

Cumulative solution

Cumulative solution

Since the IDS contribution to the realization of the ITRF2014, the IDS Combination Center (CC) routinely (every three months) computes a DORIS position and velocity cumulative solution from the latest IDS combined series. The cumulative solution provides the usual/classical estimates: station positions and velocities at a mean epoch.

All the details on the elaboration of the IDS cumulative solutions aligned to ITRF2014 can be found in Moreaux et al. (2016).

 

DORIS horizontal velocities from the IDS combined solution   DORIS vertical velocities from the IDS combined solution

Figure - ids22d01 and ITRF2020 velocities with formal error smaller than 2.5 mm/yr (left: horizontal; right: vertical).

 

Releases aligned to ITRF2020:

  • January 2023 – version #1 – Time span: 1993.0-2022.0 – ids22d01 - Product available at CDDIS (HTTPS authenticated) and IGN (FTP link)  Validation results 

See the residuals on the IDS webservice

 

Releases aligned to ITRF2014:

 

Input data:

  • Weekly SINEX files from the latest IDS combined series.
  • Station discontinuities (online file).
  • Tie vectors (online file).

Output files:

  • Cumulative solution in SINEX format.
  • Station position residuals (online plots).
  • Tie discrepancies (estimated – measured ties; online plot).

Citation:

Moreaux, G., Lemoine, F.G., Argus, D.F., Santamaría-Gómez, A., Willis, P., Soudarin, L., Gravelle, M., and Ferrage, P., 2016. Horizontal and vertical velocities derived from the IDS contribution to ITRF2014, and comparisons with geophysical models, Geophysical Journal International, 207(1), 209-227, doi:10.1093/gji/ggw265

Details