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Noise in optical synthesis images. I. Ideal Michelson interferometer

Prasad, Sudhakar and Kulkarni, Shrinivas R. (1989) Noise in optical synthesis images. I. Ideal Michelson interferometer. Journal of the Optical Society of America A, 6 (11). pp. 1702-1714. ISSN 0740-3232. http://resolver.caltech.edu/CaltechAUTHORS:PRAjosaa89

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Abstract

We study the distribution of noise in optical images produced by the aperture synthesis technique, in which the principal source of noise is the intrinsic shot noise of photoelectric detection. The results of our analysis are directly applicable to any space-based optical interferometer. We show that the signal-to-noise ratio of images synthesized by such an ideal interferometric array is essentially independent of the details of the beam-combination geometry, the degree of array redundancy, and whether zero-spatial-frequency components are included in image synthesis. However, the distribution of noise does depend on the beam-combination geometry. A highly desirable distribution, one of uniform noise across the entire image, is obtained only when the beams from the n primary apertures are subdivided and combined pairwise on n(n - 1)/2 detectors.


Item Type:Article
Additional Information:© Copyright 1989 Optical Society of America Received April 25, 1989; accepted July 10, 1989 Shrinivas R. Kulkarni gratefully acknowledges financial support from the W. M. Keck Foundation. The work of Sudhakar Prasad was supported partially by the Sandia National Laboratories under a Sandia University Research Program contract. Shrinivas R. Kulkarni is a National Science Foundation Presidential Young Investigator and an Alfred P. Sloan Fellow. Sudhakar Prasad is also with the Department of Physics and Astronomy, University of New Mexico. Shrinivas Kulkarni is also with the Owens Valley Radio Observatory, California Institute of Technology.
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Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PRAjosaa89
Alternative URL:http://www.opticsinfobase.org/abstract.cfm?URI=josaa-6-11-1702
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Deposited On:19 May 2006
Last Modified:26 Dec 2012 08:53

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