Image Characteristics In Applications Utilizing Dilute Subaperture

    Authors

    J. E. Harvey; A. Kotha;R. L. Phillips

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    IMAGING WITH SPARSE ARRAYS; DILUTE SUBAPERTURE ARRAYS; NONREDUNDANT; ARRAYS; MODULATION TRANSFER FUNCTIONS OF DILUTE ARRAYS; SYNTHETIC; APERTURE OPTICS; DOUBLE PASSAGE; BACKSCATTERING ENHANCEMENT; RANDOM SCREEN; PHASE SCREEN; TELESCOPES; APERTURE; POLARIZATION; PERFORMANCE; PARTICLES; 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.

    Journal Title

    Applied Optics

    Volume

    34

    Issue/Number

    16

    Publication Date

    1-1-1995

    Document Type

    Article

    Language

    English

    First Page

    2983

    Last Page

    2992

    WOS Identifier

    WOS:A1995RB34400023

    ISSN

    0003-6935

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