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New Generation Sampling Backend for Radio Telescopes

Transactions of IAA RAS, issue 45, 72–84 (2018)

Keywords: ADC, DSP, digital backend, field programmable gate array (FPGA), radio astronomy, very long baseline interferometry (VLBI).

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Abstract

State of the art analog-to-digital converters (ADC) allow for direct sampling of radio signals without mixers and local oscillators. It gives an opportunity to replace most of the analog equipment in a signal chain of radio telescopes by a compact digital backend. Digital signal processing (DSP) reduces losses of sensitivity in radio interferometers which is a significant advantage over the analog equipment. The paper presents a project of the Direct Sampling Backend for radio telescopes of the “Quasar” VLBI network.

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E. V. Nosov, L. V. Fedotov. New Generation Sampling Backend for Radio Telescopes // Transactions of IAA RAS. — 2018. — Issue 45. — P. 72–84.

@article{nosov2018,
  abstract = {State of the art analog-to-digital converters (ADC) allow for direct sampling of radio signals without mixers and local oscillators. It gives an opportunity to replace most of the analog equipment in a signal chain of radio telescopes by a compact digital backend. Digital signal processing (DSP) reduces losses of sensitivity in radio interferometers which is a significant advantage over the analog equipment. The paper presents a project of the Direct Sampling Backend for radio telescopes of the “Quasar” VLBI network.},
  author = {E.~V. Nosov and L.~V. Fedotov},
  doi = {10.32876/ApplAstron.45.72-84},
  issue = {45},
  journal = {Transactions of IAA RAS},
  keyword = {ADC, DSP, digital backend, field programmable gate array (FPGA), radio astronomy, very long baseline interferometry (VLBI)},
  pages = {72--84},
  title = {New Generation Sampling Backend for Radio Telescopes},
  url = {http://iaaras.ru/en/library/paper/1821/},
  year = {2018}
}

TY  - JOUR
TI  - New Generation Sampling Backend for Radio Telescopes
AU  - Nosov, E. V.
AU  - Fedotov, L. V.
PY  - 2018
T2  - Transactions of IAA RAS
IS  - 45
SP  - 72
AB  - State of the art analog-to-digital converters (ADC) allow for direct
sampling of radio signals without mixers and local oscillators. It
gives an opportunity to replace most of the analog equipment in a
signal chain of radio telescopes by a compact digital backend.
Digital signal processing (DSP) reduces losses of sensitivity in
radio interferometers which is a significant advantage over the
analog equipment. The paper presents a project of the Direct Sampling
Backend for radio telescopes of the “Quasar” VLBI network.
DO  - 10.32876/ApplAstron.45.72-84
UR  - http://iaaras.ru/en/library/paper/1821/
ER  -