An information theoretic approach to optical interferometry

Douglas A. Hope; Sudhakar Prasad

doi:10.1117/12.459077

21 February 2003 An information theoretic approach to optical interferometry

Douglas A. Hope, Sudhakar Prasad

Proceedings Volume 4838, Interferometry for Optical Astronomy II; (2003) https://doi.org/10.1117/12.459077
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

In optical synthesis imaging, the incomplete sampling of the complex visibility function, atmospherically induced phase perturbations, detector noise, and low light levels all limit one's ability to produce high-fidelity images. One improves upon these limitations by using iterative non-linear deconvolution and self-calibration techniques to produce image models that are consistent with the data. The question of image fidelity, or how well these models faithfully represent the true object, is an important question to ask. A possible answer could be formulated using the concepts of statistical information theory. We apply the concepts of Shannon Information to an optical interferometer and propose methods for monitoring the information content of images as a measure of image quality.

Citation Download Citation

Douglas A. Hope and Sudhakar Prasad "An information theoretic approach to optical interferometry", Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); https://doi.org/10.1117/12.459077

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