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Proceedings Paper

A Matched Filter For Infrared Background Suppression
Author(s): Sergio Nanni; Luca Nicotra
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Paper Abstract

This paper reports the performance evaluation of a matched filter for IR background suppression and target detection in one atmospheric window of the Middle Infrared Region. This filter is for application in an airborne staring infrared missile warning (IRMW) system. It is aimed at the possibility of separating the temporal fluctuation of background noise, induced by aircraft motion, from a particular short-time characteristic of the infrared missile threat signature. At first, mathematical models were applied to determine the main parameters and relations that affect background noise in relation to the system's relative motion in a selected scenario, as well as threat signature characteristics. In this phase of the study, a general expression for the optimum matched filter transfer function was obtained with an associated sub-optimal solution. Performances of these filters in many cases of interest are also evaluated and compared with those of a double-difference filter. Finally, experimental measurements were carried out with a scanning radiometer of IR background radiance, which provided the input for computer simulations to validate the mathematical models utilized.

Paper Details

Date Published: 11 April 1988
PDF: 9 pages
Proc. SPIE 0860, Real-Time Image Processing: Concepts and Technologies, (11 April 1988); doi: 10.1117/12.943387
Show Author Affiliations
Sergio Nanni, Elettronica S.P.A (Italy)
Luca Nicotra, Elettronica S.p.A. (Italy)

Published in SPIE Proceedings Vol. 0860:
Real-Time Image Processing: Concepts and Technologies
Jean Besson, Editor(s)

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