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The SFXC software correlator for very long baseline interferometry: algorithms and implementation

A. Keimpema ; M.M. Kettenis ; S.V. Pogrebenko ; R.M. Campbell ; G. Cimó ; D.A. Duev ; B. Eldering ; N. Kruithof ; H.J. van Langevelde ; D. Marchal ; G. Molera Calvés ; H. Ozdemir ; Z. Paragi ; Y. Pidopryhora ; A. Szomoru ; Jun Yang (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium)
Experimental astronomy (0922-6435). Vol. 39 (2015), 2, p. 259-279.
[Artikel, refereegranskad vetenskaplig]

In this paper a description is given of the SFXC software correlator, developed and maintained at the Joint Institute for VLBI in Europe (JIVE). The software is designed to run on generic Linux-based computing clusters. The correlation algorithm is explained in detail, as are some of the novel modes that software correlation has enabled, such as wide-field VLBI imaging through the use of multiple phase centres and pulsar gating and binning. This is followed by an overview of the software architecture. Finally, the performance of the correlator as a function of number of CPU cores, telescopes and spectral channels is shown.

Nyckelord: Radio astronomy, Software correlation, VLBI



Denna post skapades 2015-07-07. Senast ändrad 2015-11-16.
CPL Pubid: 219521

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium

Ämnesområden

Datorteknik

Chalmers infrastruktur

 


Projekt

Denna publikation är ett resultat av följande projekt:


NEXPReS- Novel EXplorations Pushing Robust e-VLBI Services (NEXPReS) (EC/FP7/261525)