Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization of a Low-Frequency Radio Astronomy Prototype Array in
  Western Australia   We report characterization results for an engineering prototype of a
next-generation low-frequency radio astronomy array. This prototype, which we
refer to as the Aperture Array Verification System 0.5 (AAVS0.5), is a sparse
pseudo-random array of 16 log-periodic antennas designed for 70-450 MHz. It is
co-located with the Murchison Widefield Array (MWA) at the Murchison
Radioastronomy Observatory (MRO) near the Australian Square Kilometre Array
(SKA) core site. We characterize the AAVS0.5 using two methods: in-situ radio
interferometry with astronomical sources and an engineering approach based on
detailed full-wave simulation. In-situ measurement of the small prototype array
is challenging due to the dominance of the Galactic noise and the relatively
weaker calibration sources easily accessible in the southern sky. The MWA, with
its 128 "tiles" and up to 3 km baselines, enabled in-situ measurement via radio
interferometry. We present array sensitivity and beam pattern characterization
results and compare to detailed full-wave simulation. We discuss areas where
differences between the two methods exist and offer possibilities for
improvement. Our work demonstrates the value of the dual astronomy-simulation
approach in upcoming SKA design work.

9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph