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Hayo Hase
Type of contribution: oral

Options for VGOS observations and analysis in 2020

Hayo Hase, Dirk Behrend, Axel Nothnagel, Harald Schuh

With the VGOS program, the IVS continues to improve its service. In the coming years a modern network of very fast radio telescopes will become available in addition to the existing legacy network of VLBI observing stations. The projection of the ambitious VGOS plans and the potential of the existing legacy stations leads to a new vision on how the VLBI infrastructure may be used in 2020. In order to take advantage of the new possibilities that the increased data volumes constitute, a new scenario for scheduling, observing, and analyzing VLBI data may shift the VLBI operations from being session-based to continuous observations. Depending on possible upgrades of data transfer and correlation infrastructure, we anticipate to move from an analysis session-by-session to other scenarios which depend on latency requirement. One such scenario is a continuously running analysis, where new observations are added one by one to filter solutions as soon as they pour out of a continuous transfer and correlation process. Another concept is to identify stations with high transfer capabilities forming a network which provides data for low latency EOP results before the complete network is processed and analyzed for less stringent requirements like TRF or CRF results.