Head of the Decameter Radio Astronomy Department of Institute of Radio Astronomy of NASU, Kharkov, Ukraine
Since 1986 Oleg Ulyanov has been working at the Radio Astronomy Institute of the National Academy of Sciences of Ukraine in Kharkov as a Senior engineer, junior Researcher, Research Associate, Senior Researcher. Currently, he serves as a head of the Department of Decametric Radio Astronomy. Dr O. Ulyanov participated in various national and international astrophysical research projects with using largest radio telescopes in the world. He has co-authored of more than 130 scientific publications. His scientific interests area is astrophysics, radio astronomy, computer science, radio engineering.
Dr O. Ulyanov a member of the International Astronomical Union from 2010, laureate of the Scientific Prize of the National Academy of Sciences of Ukraine named academician S.Ya. Braude in 2017 and nominee of the State Prize of Ukraine in the field of science and technology in 2018.
FAST PROCESSING OF LOW FREQUENCY RADIO ASTRONOMY DATA USING GPUs
O. Ulyanov, M. Plakhov, A. Shevtsova, A. Skoryk
Institute of Radio Astronomy of the National Academy of Sciences of Ukraine
Mystetstv str. 4, Kharkiv, 61002, Ukraine
The aim of this work is to determine the possibility of using NVIDIA GPUs for spectral/correlation analysis and processing of low-frequency radio astronomy data produced by low-frequency radio telescopes UTR-2, URAN-2, GURT, LWA, LOFAR, NENUFAR in real time (”on the fly”). We will show limits in processing speed achieved by NVIDIA graphics cards. We have compared the execution speed of different FFT/IFFT implementation plans applying on a large data set. We have tested some types of graphics processing units (GPUs) and central processing unit (CPU) Intel Core i7 with different plans and different GPU drivers. Also, computational errors of the FFT/IFFT implementation plans are estimated.
Senior Technologist at INAF – National Institute of Astrophysics, Institute of Radioastronomy of Bologna, Italy
Guest Scientist at the Max Planck Institute for Radioastronomy, Germany
Dr. Gino Tuccari has graduated from Catania University in Physics. He is author and co-author in more than 200 international and Italian papers, congress contributions and technical reports. Also Dr Tuccari has invented five Italian patents, one of them EPO (European) extended, one PCT (worldwide) extended.
Dr. Tuccari’s recent technological and scientific research activities are related to:
- development of radio-astronomy instrumentation;
- main development is the DBBC radioastronomy instrumentation family,
- a complete VLBI terminal operating in the digital domain, adopted by the European VLBI and Auscope networks, used in the IVS and EHT networks;
- development of low noise receivers and high-temperature superconducting devices.
ANTARR – ETNA LOW-FREQUENCY ANTENNA ARRAY
G. Tuccari (1,2), M. Wunderlich (2), S. Dornbusch (2), G. G. Tuccari (3)
1 INAF Instituto di Radioastronomia, Italy 2 Max Planck Institute fur Radioastronomie, Germany 3 HAT-Lab srl, Italy
A project called “AntArr” as a new application of the DBBC3 (Digital Base Band Converter, 3rd generation) is presented. A group of antennas operating at low frequencies, in the range from 10 MHz up to 1500 MHz, are phased up for VLBI, for pulsar and more recently for FRB observations. Part of the scientific program is also dedicated to SETI activities in piggy-back mode.
Dedicated elements can even be added to reach still lower frequencies to observe the range down to kHz frequencies. The DBBC3 manages the array operations in a selected portion of the band and the main characteristic is to synthesize a beam with an innovative approach. The final product of the array is a single station standard VLBI data stream for correlation with other antennas or a synthesized beam for single-dish observations.
A number antenna and array prototypes have been realized and are under test at a location on the Etna volcano slope, with the aim form a complete radio telescope of 1024 elements in 2020. This project completes the lower part of the frequency spectrum covered in VLBI by the BRAND EVN project, which will be shortly mentioned.
The project AntArr is hosted and financed by HAT-LAB srl, which is the manufacturer of the DBBC family backends.