Application of a synthetic aperture optical system to infrared imaging.
This paper discusses the application of a synthetic aperture system (SAS) for the formation of infrared, images. The SAS of primary interest is a hexagonal array of six circular apertures; special emphasis is placed on a one-dimensional model that describes the salient features of the two-dimensional model. In infrared images, in the 8-14-microm region, conventional detectors are too large to sample the image without aliasing the spatial spectrum. The unusual transfer function characteristics of the SAS are shown to obtain larger sampling distances than those required by the Whittaker-Shannon sampling theory. One possible detector array that will correctly sample the image is presented.
Dereniak
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