Paris Observatory Geodetic VLBI Center

This center is a component of the International VLBI Service for Geodesy and Astrometry (IVS).

Analysis Service

• Current solution opa2025a
  • Earth orientation, TRF, and CRF: global + rapid processing of regular sessions,
  • UT1: processing of intensive sessions,
  • Baseline and station coordinate time series from rapid processing,
  • Zenith troposphere delay time series per station from rapid processing,
  • Radio source coordinate time series from rapid and global processing.
• Free core nutation follow-up from IERS data,
• General statistics on the observations,
• See the VLBI network on Google Maps.

Data Center

The data center is one of the three IVS primary data centers (with NASA/CDDIS and BKG). You can

• Download VLBI data and products via FTP at ivsopar.obspm.fr, and
• Submit VLBI data and products: please contact us to obtain the procedure.