CONFERENCE PROCEEDINGS
Advanced Search
Home > Journals > Opt. Eng. > Volume 56 > Issue 11 > Article
Open Access
21 November 2017 Direct-detection synthetic-aperture coherent imaging by phase retrieval
James R. Fienup
Author Affiliations +
Optical Engineering, Vol. 56, Issue 11, 113111 (November 2017). https://doi.org/10.1117/1.OE.56.11.113111
Abstract
This paper describes a way to synthesize a larger coherent aperture from smaller apertures combined with motion, when only intensities are measured. It relies on collecting intensity patterns in two planes for each aperture, for example, the aperture plane and an image plane, and using a phase-retrieval algorithm to reconstruct the optical field in the aperture plane. As the sensor moves forward, a larger two-dimensional aperture is synthesized, allowing a much finer resolution image to be reconstructed. An algorithm to correct for the relative pointing (tip and tilt phases) and piston errors between different apertures and at different times is needed to phase up the synthetic aperture. Results of simulations, including the effects of speckle, are shown, and practical considerations are evaluated.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Citation Download Citation
James R. Fienup "Direct-detection synthetic-aperture coherent imaging by phase retrieval," Optical Engineering 56(11), 113111 (21 November 2017). https://doi.org/10.1117/1.OE.56.11.113111
Received: 28 August 2017; Accepted: 1 November 2017; Published: 21 November 2017
JOURNAL ARTICLE
 13 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Lens.org Logo
CITATIONS
Cited by 3 scholarly publications.
Advertisement
Advertisement
KEYWORDS
Speckle
Telescopes
Phase retrieval
Heterodyning
Photons
Signal to noise ratio
Reconstruction algorithms
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top