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M. Schartner, J. Böhm:
"Impact of different observing rates on geodetic results";
Poster: 24th Meeting of the European VLBI Group for Geodesy and Astrometry, Gran Canaria, Spain; 2019-03-17 - 2019-03-19.

Over the last couple of years, many groups have put a lot of effort into increasing the observing rate of Very Long Baseline Interferometry (VLBI) experiments. In particular, it is one of the main concepts of VGOS to observe with a high data rate of several Gbit/s. While some sessions like the Austral experiments already increased their observing rate to one Gbit/s, most sessions still observe with 128, 256 or 512 Mbit/s. We will investigate the possible benefit of increasing the observing rate for specific VLBI experiments based on large scale Monte-Carlo simulations. Therefore we have scheduled VLBI schedules using VieSched++ with different observing rates, varying from 128 Mbit/s up to multiple Gbit/s. For example, we have created more than one thousand schedules investigating the CONT17 XB network with an assumed observin grate of 128, 256 and 512 Mbit/s as well as 1, 2 and 4 Gbit/s. We will show what benefit can be assumed by increasing the observing rate based on the number of observations but also based on the repeatability of geodetic parameters like station coordinates and earth orientation parameters. Additionally, we will show how the scheduling optimization criteria should be changed to achieve the best possible result.

http://www.oan.es/evga2019/EVGA2019_PDF/P207_EVGA2019_Schartner.pdf