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The Information of Images and Its Dependence on Noise and Spatial Resolution

Published online by Cambridge University Press:  12 April 2016

Peter M.W. Kalberla
Peter M.W. Kalberla*
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, F.R.G.

Extract

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Radioastronomical observations are often incomplete in the sense that either the angular resolution desired or the signal-to-noise ratio required are not adequate. Attempts to fill in the missing information by either smoothing or deconvolving the observed data date back to Bracewell (1956, 1958). More recently the need for more sophisticated restoration procedures has increased since observations with radioastronomical interferometers frequently suffer from incomplete coverage of the u – v plane. Procedures like CLEAN (Högbom 1974, Schwarz 1978) and MEM (Wernecke 1977, Gull and Daniell 1978) have been developed to interpolate the unknown data in the u – v plane.

Type
Part V: Maximum Entropy Image Reconstruction
Information
International Astronomical Union Colloquium , Volume 49: Image Formation from Coherence Functions in Astronomy , 1979 , pp. 249 - 255
Copyright
Copyright © Reidel 1979

References

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Gull, S.T. and Daniell, G.J.: 1978, Nature 272, pp. 686 Google Scholar
Högbom, J.A.: 1974, Astron. Astrophys. Suppl. 15, pp. 417 Google Scholar
Kalberla, P.M.W.: 1978, Thesis, Bonn.Google Scholar
Schwarz, U.J.: 1978, Astron. Astrophys. 65, pp. 345.Google Scholar
Wernecke, S.J.: 1977, Radio Science 12, pp. 831 CrossRefGoogle Scholar