Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: All-Digital Wideband Space-Frequency Beamforming for the SKA Aperture
  Array   In this paper, we consider the problem of optimum multi-domain real-time
beamforming and high-precision beam pattern positioning in application to very
large wideband array antennas, particularly to the Square Kilometre Array (SKA)
aperture array antenna. We present a new structure for wideband space-frequency
beamforming and beamsteering that maximizes detectability of cosmic signals
over the array operational frequency range.

12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th