1 May 2007 Resolution enhancement by aperture synthesis in digital holography
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Optical Engineering, 46(5), 055803 (2007). doi:10.1117/1.2740768
Abstract
The resolution of digital holography as an optical imaging system is described by the point spread function of the system. Here the point spread function of double-aperture digital holography is determined. It promises the possibility of a resolution increase by the use of synthetic apertures, where we combine the digital holograms of two CCD arrays in one large hologram and reconstruct, or we superpose coherently the two reconstructed wave fields after a proper shift. An experimental method for the determination of this shift with subpixel accuracy is given. Furthermore, experimental results on numerically reconstructed wave fields from synthetic holograms stemming from two mutually shifted digital holograms of the same scene are presented.
Thomas M. Kreis, Karsten Schluter, "Resolution enhancement by aperture synthesis in digital holography," Optical Engineering 46(5), 055803 (1 May 2007). http://dx.doi.org/10.1117/1.2740768
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KEYWORDS
Holograms

Digital holography

Charge-coupled devices

Point spread functions

Synthetic apertures

Digital recording

Resolution enhancement technologies

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