Title

Image Characteristics In Applications Utilizing Dilute Subaperture Arrays

Keywords

Dilute subaperture arrays; Imaging with sparse arrays; Modulation transfer functions of dilute arrays; Nonredundant arrays; Synthetic aperture optics

Abstract

When a large aperture is synthesized with an array of smaller subapertures for high-resolution imaging applications, it is important not only to arrange the subapertures to achieve minimal spatial frequency redundancy but also to choose the size of the subapertures (i.e., the dilution ratio) necessary to achieve the best possible image quality. Spurious or ghost images often occur even for nonredundant dilute subaperture arrays. We show that array configurations producing a uniform modulation transfer function will not exhibit these undesirable ghost images. A prescription that is unique and original (to the best of our knowledge) is then presented for constructing both one-dimensional and two-dimensional configurations of dilute subaperture arrays that results in a uniform spatial frequency response with an arbitrarily high spatial resolution for reciprocal path-imaging applications. © 1995 Optical Society of America.

Publication Date

6-1-1995

Publication Title

Applied Optics

Volume

34

Issue

16

Number of Pages

2983-2992

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.34.002983

Socpus ID

0001640301 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0001640301

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