We describe an hierarchical, frequency-domain beamforming architecture for synthesising a sky beam from the wideband antenna feeds of digital aperture arrays. The development of densely-packed, all-digital aperture arrays is an important area of research required for the Square Kilometre Array (SKA) radio telescope. The design of real-time signal processing systems for digital aperture arrays is currently a central challenge in pathfinder projects worldwide. In particular, this work describes a specific implementation of the beamforming architecture to the 2-Polarisation All-Digital (2-PAD) aperture array demonstrator.
@article{arxiv.0912.0380,
title = {A Digital Broadband Beamforming Architecture for 2-PAD},
author = {R. Armstrong and J. Hickish and K. Zarb Adami and M. E. Jones},
journal= {arXiv preprint arXiv:0912.0380},
year = {2010}
}
Comments
Submitted to Widefield Science and Technology for the SKA, SKADS Conference 2009, Chateau de Limelette, Belgium, 4-6 novemer 2009; 5 pages, 10 figures