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Proceedings Paper

Phase retrieval in sparse aperture systems with phase diversity: a trade space study
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Paper Abstract

Sparse-aperture (SA) telescopes are a technology of interest in the field of remote sensing. Significant optical resolution can be achieved by an array of sub-apertures, mitigating size and weight limitations of full aperture space-deployed sensors. Much of the analysis to date has been done with the assumption that an extended scene is spectrally flat and each pixel has the same spectrum (gray-world assumption). Previous work has found the gray-world assumption is not valid when imaging a spectrally diverse scene and/or when the optical configuration is heavily aberrated. Broadband phase diversity (BPD) is an image-based method to detect the aberrations of a system. It also assumes a gray-world. Digital simulations that quantify the limitations of BPD with respect to spectral diversity of the extended scene, the RMS of the optical path difference (OPD), noise of the system, and band width of the sensor are presented.

Paper Details

Date Published: 15 April 2008
PDF: 12 pages
Proc. SPIE 6958, Sensors and Systems for Space Applications II, 69580K (15 April 2008); doi: 10.1117/12.782191
Show Author Affiliations
Brian J. Daniel, Rochester Institute of Technology (United States)
Matthew R. Bolcar, Institute of Optics, Univ. of Rochester (United States)
John R. Schott, Rochester Institute of Technology (United States)
James R. Fienup, Institute of Optics, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 6958:
Sensors and Systems for Space Applications II
Richard T. Howard; Pejmun Motaghedi, Editor(s)

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