Abstract

Millimeter wave imaging techniques can provide high spatial-resolution images of various composites. Lens antennas may be incorporated into the imaging system to provide a small incident beam footprint. Another approach may involve the use of horn antennas, which if operating in their near-fields, images with reasonably high spatial-resolutions may also be obtained. This paper gives a comparison between such near-field and focused far-field imaging of the Space Shuttle Spray on Foam Insulation (SOFI) used in its external fuel tank at millimeter wave frequencies. Small horn antennas and lens antennas with relatively long depth of focus were used in this investigation

Meeting Name

3rd International Conference on Electromagnetic Near Field Characterization and Imaging

Department(s)

Electrical and Computer Engineering

Sponsor(s)

United States. National Aeronautics and Space Administration

Keywords and Phrases

Imaging; Millimeter Waves; Near-Field Imaging; Spray on Foam Insulation (SOFI)

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2007 University of Missouri--Rolla, All rights reserved.

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