Intrinsic advantages of the w component and spherical imaging for wide-field radio interferometry

Jason D McEwen, Yves Wiaux

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Incorporating wide-field considerations in interferometric imaging is of increasing importance for next-generation radio telescopes. Compressed sensing techniques for interferometric imaging have been extended to wide fields recently, recovering images in the spherical coordinate space in which they naturally live. We review these techniques, highlighting: (i) how the effectiveness of the spread spectrum phenomenon, due to the w component inducing an increase of measurement incoherence, is enhanced when going to wide fields; and (ii) how sparsity is reduced by recovering images directly on the sphere. Both of these properties act to improve the quality of reconstructed images.
Original languageEnglish
Title of host publication30th URSI General Assembly and Scientific Symposium, 2011
PublisherIEEE
Number of pages4
ISBN (Print)978-1-4244-5117-3
DOIs
Publication statusPublished - 2011
Event30th URSI General Assembly and Scientific Symposium, 2011 - Istanbul, Turkey
Duration: 13 Aug 201120 Aug 2011

Conference

Conference30th URSI General Assembly and Scientific Symposium, 2011
Abbreviated titleURSIGASS 2011
CountryTurkey
CityIstanbul
Period13/08/1120/08/11

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