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A GPU-Based Wide-Band Radio Spectrometer

  • Jayanth Chennamangalam (a1), Simon Scott (a2), Glenn Jones (a3), Hong Chen (a2), John Ford (a4), Amanda Kepley (a4), D. R. Lorimer (a1) (a4), Jun Nie (a5), Richard Prestage (a4), D. Anish Roshi (a6), Mark Wagner (a2) and Dan Werthimer (a2)...

Abstract

The graphics processing unit has become an integral part of astronomical instrumentation, enabling high-performance online data reduction and accelerated online signal processing. In this paper, we describe a wide-band reconfigurable spectrometer built using an off-the-shelf graphics processing unit card. This spectrometer, when configured as a polyphase filter bank, supports a dual-polarisation bandwidth of up to 1.1 GHz (or a single-polarisation bandwidth of up to 2.2 GHz) on the latest generation of graphics processing units. On the other hand, when configured as a direct fast Fourier transform, the spectrometer supports a dual-polarisation bandwidth of up to 1.4 GHz (or a single-polarisation bandwidth of up to 2.8 GHz).

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Copyright

Corresponding author

7 Corresponding author. Email: jayanth@astro.ox.ac.uk

References

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