Efficient correction for both direction-dependent and baseline-dependent effects in interferometric imaging: An A-stacking framework
dc.contributor.author | Young, A. | |
dc.contributor.author | Wijnholds, S. | |
dc.contributor.author | Carozzi, T. | |
dc.contributor.author | Maaskant, R. | |
dc.contributor.author | Ivashina, M. | |
dc.contributor.author | Davidson, David | |
dc.date.accessioned | 2018-12-13T09:11:47Z | |
dc.date.available | 2018-12-13T09:11:47Z | |
dc.date.created | 2018-12-12T02:47:12Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Young, A. and Wijnholds, S. and Carozzi, T. and Maaskant, R. and Ivashina, M. and Davidson, D. 2015. Efficient correction for both direction-dependent and baseline-dependent effects in interferometric imaging: An A-stacking framework. Astronomy and Astrophysics. 577. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/71936 | |
dc.identifier.doi | 10.1051/0004-6361/201425492 | |
dc.description.abstract |
© 2015 ESO. A general framework is presented for modeling direction-dependent effects that are also baseline-dependent, as part of the calibration and imaging process. Within this framework such effects are represented as a parametric linear model in which basis functions account for direction dependence, whereas expansion coefficients account for the baseline dependence. This separation enables the use ofa multiple fast Fourier transform-based implementation of the forward calculation (sky to visibility) in a manner similar to the W-stacking solution for non-coplanar baselines, and offers a potential improvement in computational efficiency in scenarios where the gridding operation in a convolution-based approach to direction-dependent effects may be too costly. Two novel imaging approaches that are possible within this framework are also presented. | |
dc.publisher | EDP Sciences | |
dc.title | Efficient correction for both direction-dependent and baseline-dependent effects in interferometric imaging: An A-stacking framework | |
dc.type | Journal Article | |
dcterms.source.volume | 577 | |
dcterms.source.issn | 0004-6361 | |
dcterms.source.title | Astronomy and Astrophysics | |
curtin.department | Curtin Institute of Radio Astronomy (Engineering) | |
curtin.accessStatus | Fulltext not available |
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