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Proceedings Paper

Near-field microwave imaging of dielectric anomalies: antennas and processing
Author(s): W. Davis; James T. Nilles; E. L. Rope; Gus P. Tricoles
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Paper Abstract

In microwave systems for detecting or imaging buried dielectric anomalies, a common technique is to search for reflectance variations by mechanically scanning an antenna over an area. The antenna usually operates in its and the object's nearfields to reduce diffraction spreading so that the reflectance distribution resembles the object's shape and is thus an image. Although mechanical scanning is reliable, it is slow because data acquisition is sequential. Data acquisition can be accelerated by an antenna array. An array provides spatially parallel data channels. If a single transmitter and receiver unit are used, acquisition is sequential but very fast with solid state switches. If each antenna has a transmitter and receiver, acquisition is simultaneous, and costs increase.

Paper Details

Date Published: 1 July 1990
PDF: 1 pages
Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); doi: 10.1117/12.34757
Show Author Affiliations
W. Davis, General Dynamics Electronics Div. (United States)
James T. Nilles, General Dynamics Electronics Div. (United States)
E. L. Rope, General Dynamics Electronics Div. (United States)
Gus P. Tricoles, General Dynamics Electronics Div. (United States)

Published in SPIE Proceedings Vol. 1319:
Optics in Complex Systems
F. Lanzl; H.-J. Preuss; G. Weigelt, Editor(s)

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