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Proceedings Paper

Elimination of background clutter in airports for instrument landing systems
Author(s): K. A. Jose; Vijay K. Varadan; Vasundara V. Varadan
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Paper Abstract

Specular reflection from airport buildings interferes with instrument landing systems. It is possible to eliminate these specular reflections by periodic strip grating techniques. These metallic strips, when painted over a dielectric sheet, are found to eliminate the specular reflections from a plane metallic surface and the surface behaves as a `non reflecting conducting surface.' These inexpensive surfaces are lightweight and have the added advantage of ease in fabrication. It is easy to apply metallic paint in a regularly spaced strip pattern. By a suitable choice of the period `d' and the thickness of the dielectric medium (the wall), it is possible to eliminate reflections at any desired angle. It may also be possible to eliminate the reflections from other targets like cylinders and corner reflectors.

Paper Details

Date Published: 1 May 1994
PDF: 8 pages
Proc. SPIE 2189, Smart Structures and Materials 1994: Smart Materials, (1 May 1994); doi: 10.1117/12.174054
Show Author Affiliations
K. A. Jose, The Pennsylvania State Univ. (United States)
Vijay K. Varadan, The Pennsylvania State Univ. (United States)
Vasundara V. Varadan, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 2189:
Smart Structures and Materials 1994: Smart Materials
Vijay K. Varadan, Editor(s)

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