← 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 0Source ↗Scholar ↗
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 0Source ↗Scholar ↗