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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 3 — Mar. 1, 2012
  • pp: 295–302

Optical aperture synthesis imaging with fractional Fourier-domain filtering

Yuesong Jiang, Jingjing Zhang, Yuntao He, Haiyang Wang, Jing Wang, and Jun Zhang  »View Author Affiliations


JOSA A, Vol. 29, Issue 3, pp. 295-302 (2012)
http://dx.doi.org/10.1364/JOSAA.29.000295


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Abstract

The fractional Fourier transform, which is a generalization of the classical Fourier transform, is introduced into an optical aperture synthesis (OAS) system by which imaging of an astronomical object can be achieved. We introduce fractional Fourier optical imaging and fractional Fourier-domain filtering (FFDF), and then present the schematic diagram of an OAS imaging system with FFDF. The modulation transfer function of an OAS system with FFDF is compared with that of an OAS system in the same condition. The result indicates that the OAS system with FFDF has larger practical cutoff frequency when the fill factor is smaller. Furthermore, the quality of imaging and restoration also demonstrates this conclusion.

© 2012 Optical Society of America

OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(110.2960) Imaging systems : Image analysis
(110.2990) Imaging systems : Image formation theory
(070.2575) Fourier optics and signal processing : Fractional Fourier transforms

ToC Category:
Imaging Systems

History
Original Manuscript: August 22, 2011
Revised Manuscript: November 16, 2011
Manuscript Accepted: November 20, 2011
Published: February 16, 2012

Citation
Yuesong Jiang, Jingjing Zhang, Yuntao He, Haiyang Wang, Jing Wang, and Jun Zhang, "Optical aperture synthesis imaging with fractional Fourier-domain filtering," J. Opt. Soc. Am. A 29, 295-302 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-3-295


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