Microwave imaging using indirect holographic techniques

Smith, Dave, Yurduseven, Okan, Livingstone, Bryan and Schejbal, Vladimir (2014) Microwave imaging using indirect holographic techniques. IEEE Antennas and Propagation Magazine, 56 (1). pp. 104-117. ISSN 1045-9243

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Abstract

This work describes how indirect holographic techniques, previously applied to the determination of antenna radiation patterns, can be adapted for the imaging of passive objects. It provides details of how complex scattered field values can be obtained in a simple and inexpensive manner from sampled scalar intensity measurements taken over a single scanning aperture. This work provides a brief outline of the basic theory of indirect microwave holography, and how the transformation of the holographic intensity pattern into the Fourier domain enables the isolation of the terms required for complex field reconstruction to be isolated from the remaining terms. The work is supported by a range of experimental results, illustrating the reconstructed complex fields for a number of simple test objects. Back-propagation techniques have also been included to reconstruct complex fields at the position of the scattering objects.

Item Type:	Article
Uncontrolled Keywords:	Microwave imaging; microwave holography; near-field microwave imaging; image reconstruction; Fourier optics
Subjects:	F300 Physics
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	23 Oct 2014 10:51
Last Modified:	12 Oct 2019 19:08
URI:	http://nrl.northumbria.ac.uk/id/eprint/17783

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