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A digital signal conversion system for astronomy radio interferometers with small antennas

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Abstract

Results of designing a digital signal conversion system for radio interferometers with small-diameter (up to 12 m) antennas are presented. The system contains four digital signal conversion channels with 500-MHz bandwidths. The output data stream rate in the VDIF format is 2048 Mbit/s per channel, and the cumulative output data flow is 8192 Mbit/s. The observation data flows arrive at the signal recording buffer unit and can be transmitted from there via a 10G Ethernet interface to a correlator in near-real time.

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Authors and Affiliations

  1. Institute of Applied Astronomy (IAA), Russian Academy of Sciences, nab. Kutuzova 10, St. Petersburg, 191187, Russia

    L. V. Fedotov, E. V. Nosov & S. A. Grenkov

  2. ZAO “Radio Engineering Equipment”, St. Petersburg, Russia

    N. E. Kol’tsov

Authors
  1. L. V. Fedotov
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  2. N. E. Kol’tsov
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  3. E. V. Nosov
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  4. S. A. Grenkov
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Additional information

Original Russian Text © L.V. Fedotov, N.E. Kol’tsov, E.V. Nosov, S.A. Grenkov, 2011, published in Pribory i Tekhnika Eksperimenta, 2011, No. 6, pp. 21–26.

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Fedotov, L.V., Kol’tsov, N.E., Nosov, E.V. et al. A digital signal conversion system for astronomy radio interferometers with small antennas. Instrum Exp Tech 54, 765–770 (2011). https://doi.org/10.1134/S0020441211060054

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  • DOI: https://doi.org/10.1134/S0020441211060054

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