29 citations · 47 across the 10 of their papers we have counts for
7 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…
A Bayesian Lower Bound for Parameter Estimation of Poisson Data Including Multiple Changes (extended)
Lucien Bacharach, Mohammed Nabil El Korso, Alexandre Renaux +1
This paper derives lower bounds for the mean square errors of parameter estimators in the case of Poisson distributed data subjected to multiple abrupt changes. Since both change l…
A class of Weiss-Weinstein bounds and its relationship with the Bobrovsky-Mayer-Wolf-Zakai bounds
Eric Chaumette, Alexandre Renaux, Mohammed Nabil El Korso
A fairly general class of Bayesian "large-error" lower bounds of the Weiss-Weinstein family, essentially free from regularity conditions on the probability density functions suppor…
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…
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…