A GPU-Based Wide-Band Radio Spectrometer
Department of Physics and Astronomy, West Virginia University, PO Box 6315, Morgantown, WV 26506, USA
arXiv:1411.0436 [astro-ph.IM], (3 Nov 2014)
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The Graphics Processing Unit (GPU) 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 GPU card. This spectrometer, when configured as a polyphase filter bank (PFB), supports a dual-polarization bandwidth of up to 1.1 GHz (or a single-polarization bandwidth of up to 2.2 GHz) on the latest generation of GPUs. On the other hand, when configured as a direct FFT, the spectrometer supports a dual-polarization bandwidth of up to 1.4 GHz (or a single-polarization bandwidth of up to 2.8 GHz).
November 5, 2014 by hgpu