Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm

Giovanni Cherubini; Paul Hurley; Matthieu Simeoni; Sanaz Kazemi

doi:10.1109/ICASSP.2016.7472293

Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm

Giovanni Cherubini, Paul Hurley, Matthieu Simeoni, Sanaz Kazemi

Western Sydney University

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

1 Citation (Scopus)

Abstract

![CDATA[Imaging techniques in radio interferometry often face a significant challenge posed by the large number of antenna signals received, from which the image information needs to be extracted. Beamforming is envisaged to reduce the rate required for transporting data from groups of antennas to a central site for further processing. We propose a novel method for image reconstruction based on the iterative scanning of a region of interest, combined with randomized beamforming. A modified approximate message-passing algorithm is adopted to extract relevant image information from beamformed signals received at the antenna stations. The method is illustrated by simulations, with reference to the LOFAR radio interferometer, and compared with the CLEAN algorithm.]]

Original language	English
Title of host publication	Proceedings 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), March 20-25, 2016, Shanghai, China
Publisher	IEEE
Pages	3326-3330
Number of pages	5
ISBN (Print)	9781479999880
DOIs	https://doi.org/10.1109/ICASSP.2016.7472293
Publication status	Published - 2016
Event	ICASSP (Conference) - Duration: 15 Apr 2018 → …

Conference

Conference	ICASSP (Conference)
Period	15/04/18 → …

Keywords

antenna arrays
beamforming
radio astronomy
radio telescopes

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10.1109/ICASSP.2016.7472293

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@inproceedings{c846130fb6fb428e93af318b8b4b62ba,

title = "Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm",

abstract = "![CDATA[Imaging techniques in radio interferometry often face a significant challenge posed by the large number of antenna signals received, from which the image information needs to be extracted. Beamforming is envisaged to reduce the rate required for transporting data from groups of antennas to a central site for further processing. We propose a novel method for image reconstruction based on the iterative scanning of a region of interest, combined with randomized beamforming. A modified approximate message-passing algorithm is adopted to extract relevant image information from beamformed signals received at the antenna stations. The method is illustrated by simulations, with reference to the LOFAR radio interferometer, and compared with the CLEAN algorithm.]]",

keywords = "antenna arrays, beamforming, radio astronomy, radio telescopes",

author = "Giovanni Cherubini and Paul Hurley and Matthieu Simeoni and Sanaz Kazemi",

year = "2016",

doi = "10.1109/ICASSP.2016.7472293",

language = "English",

isbn = "9781479999880",

pages = "3326--3330",

booktitle = "Proceedings 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), March 20-25, 2016, Shanghai, China",

publisher = "IEEE",

note = "ICASSP (Conference) ; Conference date: 15-04-2018",

}

Cherubini, G, Hurley, P, Simeoni, M & Kazemi, S 2016, Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm. in Proceedings 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), March 20-25, 2016, Shanghai, China. IEEE, pp. 3326-3330, ICASSP (Conference), 15/04/18. https://doi.org/10.1109/ICASSP.2016.7472293

Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm. / Cherubini, Giovanni; Hurley, Paul; Simeoni, Matthieu et al.
Proceedings 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), March 20-25, 2016, Shanghai, China. IEEE, 2016. p. 3326-3330.

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

TY - GEN

T1 - Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm

AU - Cherubini, Giovanni

AU - Hurley, Paul

AU - Simeoni, Matthieu

AU - Kazemi, Sanaz

PY - 2016

Y1 - 2016

N2 - ![CDATA[Imaging techniques in radio interferometry often face a significant challenge posed by the large number of antenna signals received, from which the image information needs to be extracted. Beamforming is envisaged to reduce the rate required for transporting data from groups of antennas to a central site for further processing. We propose a novel method for image reconstruction based on the iterative scanning of a region of interest, combined with randomized beamforming. A modified approximate message-passing algorithm is adopted to extract relevant image information from beamformed signals received at the antenna stations. The method is illustrated by simulations, with reference to the LOFAR radio interferometer, and compared with the CLEAN algorithm.]]

AB - ![CDATA[Imaging techniques in radio interferometry often face a significant challenge posed by the large number of antenna signals received, from which the image information needs to be extracted. Beamforming is envisaged to reduce the rate required for transporting data from groups of antennas to a central site for further processing. We propose a novel method for image reconstruction based on the iterative scanning of a region of interest, combined with randomized beamforming. A modified approximate message-passing algorithm is adopted to extract relevant image information from beamformed signals received at the antenna stations. The method is illustrated by simulations, with reference to the LOFAR radio interferometer, and compared with the CLEAN algorithm.]]

KW - antenna arrays

KW - beamforming

KW - radio astronomy

KW - radio telescopes

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:52824

U2 - 10.1109/ICASSP.2016.7472293

DO - 10.1109/ICASSP.2016.7472293

M3 - Conference Paper

SN - 9781479999880

SP - 3326

EP - 3330

BT - Proceedings 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), March 20-25, 2016, Shanghai, China

PB - IEEE

T2 - ICASSP (Conference)

Y2 - 15 April 2018

ER -

Imaging in radio interferometry by iterative subset scanning using a modified AMP algorithm

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