← Search

Ahmad Mouri Sardarabadi

2 accepted papers

2016

Radioastronomical image reconstruction with regularized least squares

ICASSP 2016accepted

Image formation using the data from an array of sensors is a familiar problem in many fields such as radio astronomy, biomedical and geodetic imaging. The problem can be formulated as a least squares (LS) estimation problem and becomes ill-posed at high resolutions, i.e. large number of image pixels…

Cited by 0SourceScholar
2015

Computationally efficient radio astronomical image formation using constrained least squares and and the MVDR beamformer

ICASSP 2015accepted

Linear image deconvolution for radio-astronomy is an ill-posed problem. For this reason, a-priori knowledge is crucial for improving the performance of the deconvolution. In this paper we show that combining non-negativity constraints with an upper bound on the magnitude of each pixel in the image c…

Cited by 0SourceScholar