Using the Multifunctional Digital Backend System on Radio Telescopes of Svetloe Observatory

Evgeny Nosov, Dmitry Marshalov, Leonid Fedotov, Yuri Bondarenko, Ismail Rahimov

IVS 2022 General Meeting Proceedings, Edited by Kyla L. Armstrong, Dirk Behrend, and Karen D. Baver NASA/CP–20220018789, 77–81 (2023)

Keywords: Digital backend, Data Processing

Abstract

The RT-32 and RT-13 VLBI radio telescopes of the Quasar network use various equipment for radio interferometric, radiometric, and spectral observations. The Data Acquisition Systems (DAS) currently used for Very Long Baseline Interferometry (VLBI) on the RT-32 telescopes at the Svetloe, Zelenchukskaya, and Badary observatories are narrow-band and do not fully meet modern requirements for the frequency bands of the recorded signals. The broadband DAS used on the RT-13 telescopes at the Badary and Zelenchukskaya observatories do not have sufficient functionality necessary to meet modern VGOS requirements. To solve these problems, the Institute of Applied Astronomy of the Russian Academy of Sciences (IAA RAS) has developed a Multifunctional Digital BackEnd system (MDBE) capable of replacing all the variety of DAS and other output devices used on the RT-13 and RT-32 radio telescopes.