A Matched Filter For Infrared Background Suppression

Sergio Nanni; Luca Nicotra

doi:10.1117/12.943387

11 April 1988 A Matched Filter For Infrared Background Suppression

Sergio Nanni, Luca Nicotra

Proceedings Volume 0860, Real-Time Image Processing: Concepts and Technologies; (1988) https://doi.org/10.1117/12.943387
Event: 1987 Symposium on the Technologies for Optoelectronics, 1987, Cannes, France

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.

Citation Download Citation

Sergio Nanni and Luca Nicotra "A Matched Filter For Infrared Background Suppression", Proc. SPIE 0860, Real-Time Image Processing: Concepts and Technologies, (11 April 1988); https://doi.org/10.1117/12.943387

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