Fundamental limitations of reciprocal path imaging through the atmosphere with dilute subaperture arrays

James E. Harvey; Anita Kotha Thompson; Ronald L. Phillips

doi:10.1117/12.178016

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29 June 1994 Fundamental limitations of reciprocal path imaging through the atmosphere with dilute subaperture arrays

James E. Harvey, Anita Kotha Thompson, Ronald L. Phillips

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Proceedings Volume 2222, Atmospheric Propagation and Remote Sensing III; (1994) https://doi.org/10.1117/12.178016
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

When synthesizing a large aperture 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 necessary to achieve the best possible image quality. Spurious, or ghost, images often occur even for nonredundant dilute subaperture arrays. In this paper we show that array configurations producing a uniform modulation transfer function will not exhibit these undesirable ghost images. A method is then presented for constructing both 1D and 2D configurations of dilute subaperture arrays that result in uniform spatial frequency response with arbitrarily high spatial resolution for reciprocal path imaging applications.

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James E. Harvey, Anita Kotha Thompson, and Ronald L. Phillips "Fundamental limitations of reciprocal path imaging through the atmosphere with dilute subaperture arrays", Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); https://doi.org/10.1117/12.178016

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