Noise in optical synthesis Images. Pt. 1. Ideal Michelson interferometer.

Details Noise in optical synthesis Images. Pt. 1. Ideal Michelson interferometer. Noise in optical synthesis Images. Pt. 1. Ideal Michelson interferometer.

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989josaa...6.1702p&link_type=abstract

Journal of the Optical Society of America A, Vol. 6, No. 11, p. 1702 - 1714

Computer Science

12

Aperture Synthesis

Scientific paper

The authors 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 their analysis are directly applicable to any space-based optical interferometer. They 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.

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