Signal Processing Firmware for the Low Frequency Aperture Array
Abstract
The signal processing firmware that has been developed for the Low Frequency Aperture Array component of the Square Kilometre Array is described. The firmware is implemented on a dual FPGA board, that is capable of processing the streams from 16 dual polarization antennas. Data processing includes channelization of the sampled data for each antenna, correction for instrumental response and for geometric delays and formation of one or more beams by combining the aligned streams. The channelizer uses an oversampling polyphase filterbank architecture, allowing a frequency continuous processing of the input signal without discontinuities between spectral channels. Each board processes the streams from 16 antennas, as part of larger beamforming system, linked by standard Ethernet interconnections. There are envisaged to be 8192 of these signal processing platforms in the first phase of the Square Kilometre array so particular attention has been devoted to ensure the design is low cost and low power.
Cite
@article{arxiv.2002.10307,
title = {Signal Processing Firmware for the Low Frequency Aperture Array},
author = {Gianni Comoretto and Riccardo Chiello and Matt Roberts and Rob Halsall and Kristian Zarb Adami and Monica Alderighi and Amin Aminaei and Jeremy Baker and Carolina Belli and Simone Chiarucci and Sergio D'Angelo and Andrea De Marco and Gabriele Dalle Mura and Alessio Magro and Andrea Mattana and Jader Monari and Giovanni Naldi and Sandro Pastore and Federico Perini and Marco Poloni and Giuseppe Pupillo and Simone Rusticelli and Marco Schiaffino and Francesco Schillirò and Emanuele Zaccaro},
journal= {arXiv preprint arXiv:2002.10307},
year = {2020}
}
Comments
19 pages