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Analogue Processing Methods for Synthesis Observations

  • T. W. Cole
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 76)

Abstract

In aperture synthesis the formation of an image involves the two steps of spatial correlation across an aperture and transformation to the image. This is closely related to conventional imaging with a lens (Cole, 1977a), which Abbé interpreted as two successive transformations at the surfaces of the lens. With the simple lens the image is the light intensity in the output plane (Figure 1(a)). In aperture synthesis (Figure 1(b)) the image is the transform of the correlation but no detection takes place. The image corresponds to the ‘light’ amplitude rather than intensity.

Keywords

Spatial Frequency High Dynamic Range Output Plane Very Large Array Aperture Synthesis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company 1979

Authors and Affiliations

  • T. W. Cole
    • 1
  1. 1.Division of RadiophysicsCSIROSydneyAustralia

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