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Low Frequency imaging and the non-isoplanatic atmosphere

Published online by Cambridge University Press:  12 April 2016

C. R. Subrahmanya
C. R. Subrahmanya*
Affiliation:
Tata Institute of Fundamental Research, Poona University Campus, Post Bag 3, Pune 411 007, India

Abstract

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At low frequencies, the typical fields of view over which imaging is required is several degrees across, for which (a) the visibility and brightness distribution cannot be assumed to be related by a two-dimensional Fourier Transform, and (b) the propagation delays introduced by the atmosphere cannot be assumed constant within the field of view. These are adequately represented in a method discussed in this paper. Although compute-intensive, the method is suitable for implementation on parallel processors.

Type
Imaging
Information
International Astronomical Union Colloquium , Volume 131: Radio Interferometry: Theory, Techniques, and Applications , 1991 , pp. 218 - 222
Copyright
Copyright © Astronomical Society of the Pacific 1991

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