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Project of Direct Sampling Backend for Radio Astronomy

Transactions of IAA RAS, issue 46, 94–99 (2018)

Keywords: ADC, DSP, digital backend, FPGA, radio astronomy, VLBI.

Abstract

Development tendencies of Data Acquisition Systems for radio telescopes are considered. The concept of digital system for radio telescopes of the VLBI Network “Quasar” is offered. In it the analog-to-digital converter is switched on directly on an output of the low-noise amplifier of the radio-receiving device and is placed on the antenna. It allows to refuse analog frequency conversion and the related shortcomings. Advantages, structure and the principles of system operation of Direct Sampling Backend of radio-astronomical signals are given.

Citation

Text

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RIS

E. V. Nosov, L. V. Fedotov. Project of Direct Sampling Backend for Radio Astronomy // Transactions of IAA RAS. — 2018. — Issue 46. — P. 94–99.

@article{nosov2018,
  abstract = {Development tendencies of Data Acquisition Systems for radio telescopes are considered. The concept of digital system for radio telescopes of the VLBI Network “Quasar” is offered. In it the analog-to-digital converter is switched on directly on an output of the low-noise amplifier of the radio-receiving device and is placed on the antenna. It allows to refuse analog frequency conversion and the related shortcomings. Advantages, structure and the principles of system operation of Direct Sampling Backend of radio-astronomical signals are given.},
  author = {E.~V. Nosov and L.~V. Fedotov},
  doi = {10.32876/ApplAstron.46.94-99},
  issue = {46},
  journal = {Transactions of IAA RAS},
  keyword = {ADC, DSP, digital backend, FPGA, radio astronomy, VLBI},
  pages = {94--99},
  title = {Project of Direct Sampling Backend for Radio Astronomy},
  url = {http://iaaras.ru/en/library/paper/1880/},
  year = {2018}
}

TY  - JOUR
TI  - Project of Direct Sampling Backend for Radio Astronomy
AU  - Nosov, E. V.
AU  - Fedotov, L. V.
PY  - 2018
T2  - Transactions of IAA RAS
IS  - 46
SP  - 94
AB  - Development tendencies of Data Acquisition Systems for radio
telescopes are considered. The concept of digital system for radio
telescopes of the VLBI Network “Quasar” is offered. In it the analog-
to-digital converter is switched on directly on an output of the low-
noise amplifier of the radio-receiving device and is placed on the
antenna. It allows to refuse analog frequency conversion and the
related shortcomings. Advantages, structure and the principles of
system operation of Direct Sampling Backend of radio-astronomical
signals are given.
DO  - 10.32876/ApplAstron.46.94-99
UR  - http://iaaras.ru/en/library/paper/1880/
ER  -