This paper investigates the possible benefits of using a Purina fractal array for beamforming, since this particular fractal has recently been suggested as the flight formation for a fractionated space craft. We analyse the beam pattern created by this, and define power concentration as measure of focussing the main beam of a multi-dimensional array. Using this performance metric and the computation cost of the array, a comparison to full lattice arrays is made. We quantify the significant benefits of the Purina array offered over a full lattice array of same complexity particularly at lower frequencies, and the complexity advantages over full lattice arrays of same aperture, particularly if energy is to be concentrated within a small angular spread.
|Number of pages||5|
|Publication status||Published - Sep 2013|
|Event||21st European Signal Processing Conference - Marrakech, Morocco|
Duration: 9 Sep 2013 → 13 Sep 2013
|Conference||21st European Signal Processing Conference|
|Period||9/09/13 → 13/09/13|
- fractal array geometry
Karagiannakis, P., Weiss, S., Punzo, G., Macdonald, M., Bowman, J., & Stewart, R. (2013). Impact of a purina fractal array geometry on beamforming performance and complexity. Paper presented at 21st European Signal Processing Conference, Marrakech, Morocco.