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- W28535260 abstract "This paper relates the optical definition of the PSF to radio interferometer arrays without reference to any image processing algorithm used to derive images from the measured visibilities. Array configurations are characterized by their magnification, defined as the ratio of the primary beam from an individual element to the synthesized beam, to facilitate comparison of arrays having equal image resolution. The statistical properties of the PSF including the effect of missing UV data are derived as a function of the number of antennas, magnification and the large-scale UV distribution. The effect of earth rotation synthesis on the PSF is also calculated. The concept of a pseudo-random array is introduced as an array whose large-scale average distribution matches an idealized continuous antenna or UV distribution. The small- scale difference between the actual discrete distribution and the idealized continuous distribution produces far sidelobes in the PSF. It is shown that the statistical distribution of the sidelobes, s, of pseudo-random arrays of N antennas with sparse UV coverage is given by ) exp(" @default.
- W28535260 created "2016-06-24" @default.
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- W28535260 date "2001-01-01" @default.
- W28535260 modified "2023-09-27" @default.
- W28535260 title "Theory and Statistics of Radio Interferometer Array Point Spread Functions" @default.
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