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The Australia Telescope National Facility Colloquium
15:30-16:30 Fri 27 Nov 2009

ATNF Marsfield Lecture Theatre

Prof. Jean-Luc Starck

(CEA/DSM-CNRS-Universite Paris / Centre de Saclay)

Compressed Sensing in Astronomy - Jean-Luc Starck Special Colloquium

Abstract: The spatial infrared astronomical satellite Herschel, launched on May 14 2009, is the first satellite which has a compressed sensing (CS) coder included in its on board software. We will present our motivations for using Compressed Sensing in this project. Then we will describe the practical implementation of our CS coder/decoder. We will show from simulations that CS enables to recover data with a spatial resolution enhanced up to 30% with similar sensitivity compared to the averaging technique proposed by ESA. Finally we will show how other problems in astronomy such interferometric image deconvolution or gamma ray image reconstruction can be also handled differently using CS.

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