13 citations · 21 across the 7 of their papers we have counts for
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Scaling performance of the SAGECal calibration package: from LOFAR to SKA
H. Spreeuw, S. Yatawatta, B. Van Werkhoven +1
This decade, the Square Kilometre Array (SKA) will perform its first observations. Preparations for building dishes, antennas, correlators and infrastructure are well underway. Con…
SAGECal performance with large sky models
H. Spreeuw, S. Yatawatta, B. van Werkhoven +1
As astronomical instruments become more sensitive, the requirements for the calibration software become more stringent; without accurate calibration solutions, thermal noise levels…
GPU acceleration of the SAGECal calibration package for the SKA
Hanno Spreeuw, Ben van Werkhoven, Sarod Yatawatta +1
SAGECal has been designed to find the most accurate calibration solutions for low radio frequency imaging observations, with minimum artefacts due to incomplete sky models. SAGECAL…
A Stochastic LBFGS Algorithm for Radio Interferometric Calibration
Sarod Yatawatta, Lukas De Clercq, Hanno Spreeuw +1
We present a stochastic, limited-memory Broyden Fletcher Goldfarb Shanno (LBFGS) algorithm that is suitable for handling very large amounts of data. A direct application of this al…
Data Multiplexing in Radio Interferometric Calibration
Sarod Yatawatta, Faruk Diblen, Hanno Spreeuw +1
New and upcoming radio interferometers will produce unprecedented amounts of data that demand extremely powerful computers for processing. This is a limiting factor due to the larg…
Adaptive ADMM in Distributed Radio Interferometric Calibration
Sarod Yatawatta, Faruk Diblen, Hanno Spreeuw
Distributed radio interferometric calibration based on consensus optimization has been shown to improve the estimation of systematic errors in radio astronomical observations. The…