29 citations · 38 across the 8 of their papers we have counts for
6 papers · 1 filter
Robust Calibration of Radio Interferometers in Non-Gaussian Environment
Virginie Ollier, Mohammed Nabil El Korso, Rémy Boyer +2
The development of new phased array systems in radio astronomy, as the low frequency array (LOFAR) and the square kilometre array (SKA), formed of a large number of small and flexi…
Parallel Calibration for Sensor Array Radio Interferometers
Martin Brossard, Mohammed Nabil El Korso, Marius Pesavento +3
In order to meet the theoretically achievable imaging performance, calibration of modern radio interferometers is a mandatory challenge, especially at low frequencies. In this pers…
Bayesian Lower Bounds for Dense or Sparse (Outlier) Noise in the RMT Framework
Virginie Ollier, Rémy Boyer, Mohammed Nabil El Korso +1
Robust estimation is an important and timely research subject. In this paper, we investigate performance lower bounds on the mean-square-error (MSE) of any estimator for the Bayesi…
Relaxed concentrated MLE for robust calibration of radio interferometers
Virginie Ollier, Mohammed Nabil El Korso, Rémy Boyer +2
In this paper, we investigate the calibration of radio interferometers in which Jones matrices are considered to model the interaction between the incident electromagnetic field an…
Calibration of Radio Interferometers Using a Sparse DoA Estimation Framework
Martin Brossard, Mohamed Nabil El Korso, Marius Pesavento +2
The calibration of modern radio interferometers is a significant challenge, specifically at low frequencies. In this perspective, we propose a novel iterative calibration algorithm…
Joint ML calibration and DOA estimation with separated arrays
Virginie Ollier, Mohammed Nabil El Korso, Rémy Boyer +2
This paper investigates parametric direction-of-arrival (DOA) estimation in a particular context: i) each sensor is characterized by an unknown complex gain and ii) the array consi…