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Measuring phased-array antenna beampatterns with high dynamic range for the Murchison Widefield Array using 137MHz ORBCOMM satellites

Neben, A R; Bradley, R.F.; Hewitt, Jacqueline N; Bernardi, G; Bowman, J D; Briggs, Franklin; Cappallo, R. J; Deshpande, Avinash; Goeke, R; Greenhill, Lincoln; Hazelton, B; Johnston-Hollitt, M; Kaplan, D L; Lonsdale, Colin J; McWhirter, S.R.; Mitchell, D.A.; Morales, Miguel F; Morgan, Edward; Oberoi, D; Ord, S M; Prabu, T; Shankar, N.Udaya; Srivani, K. S.; Subrahmanyan, R.; Tingay, S.J.; Wayth, Randall, B.; Webster, Rachel L; Williams, Anne M.; Williams, Christopher L


Detection of the fluctuations in a 21cm line emission from neutral hydrogen during the Epoch of Reionization in thousand hour integrations poses stringent requirements on calibration and image quality, both of which necessitate accurate primary beam models. The Murchison Widefield Array (MWA) uses phased-array antenna elements which maximize collecting area at the cost of complexity. To quantify their performance, we have developed a novel beam measurement system using the 137MHz ORBCOMM...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Radio Science
DOI: 10.1002/2015RS005678


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