About IVS

Overview of IVS

IVS is an international collaboration of organizations which operate or support Very Long Baseline Interferometry (VLB I) components.

The objectives of IVS are

• to provide a service to support geodetic, geophysical, and astrometric research and operational activities;
• to promote research and development activities in all aspects of the geodetic and astrometric VLBI technique; and
• to interact with the community of users of VLBI products and to integrate VLBI into a global Earth observing system.

The service aspect of IVS is meant to serve both outside users and the geodetic and astrometric community itself. Both the contributors and users of data will be served.

IVS provides data and products for the scientific community. Some of the products are

• a terrestrial reference frame (TRF),
• the international celestial reference frame (ICRF), and
• Earth orientation parameters (EOP).

All IVS data and products are archived in data centers and are publically available for research in related areas of geodesy, geophysics and astrometry..