Memory-efficient w-projection with the fast Gauss transform

Abstract

We describe a method performing w-projection using the fast Gauss transform of Strain (1991). We derive the theoretical performance, and simulate the actual performance for a range of w for a canonical array. While our implementation is dominated by overheads, we argue that this approach could for the basis of a higher-performing algorithms with particular application to the Square Kilometer Array.

12 pages, 5 figures. Accepted for publication in MNRAS

References in corpus (3)

• A multi-scale multi-frequency deconvolution algorithm for synthesis imaging in radio interferometry
• The non-coplanar baselines effect in radio interferometry: The W-Projection algorithm
• Correcting direction-dependent gains in the deconvolution of radio interferometric images

Cited by in corpus (1)

• High-Performance Image Synthesis for Radio Interferometry