Analytic technique to determine an infrared detector's acquisition range to a target against a sky background

Ignacio Lujan Jr.; Isabel Diaz

doi:10.1117/12.242999

17 June 1996 Analytic technique to determine an infrared detector's acquisition range to a target against a sky background

Ignacio Lujan Jr., Isabel Diaz

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Proceedings Volume 2742, Targets and Backgrounds: Characterization and Representation II; (1996) https://doi.org/10.1117/12.242999
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The proliferation of infrared (IR) sensitive seekers in today's battlefield is a critical problem faced by airborne vehicles. A simple analytical target acquisition technique to determine the range at which an airborne vehicle may be susceptible to detection by an IR seeker sensor is presented. This approach can be applied to any IR sensor searching for various ground or air platforms. The detection range is determined through a series of basic radiometric calculations that take into account a target's radiance and the seeker's noise equivalent flux density (NEFD) and signal-to-noise ratio (SNR). The calculations allow for background and path radiances determined from LOWTRAN 7 program outputs for night and day conditions and a sky background. A step-by- step sample calculation is provided to illustrate this approach.

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Ignacio Lujan Jr. and Isabel Diaz "Analytic technique to determine an infrared detector's acquisition range to a target against a sky background", Proc. SPIE 2742, Targets and Backgrounds: Characterization and Representation II, (17 June 1996); https://doi.org/10.1117/12.242999

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KEYWORDS

Sensors

Signal to noise ratio

Infrared sensors

Imaging infrared seeker

Target acquisition

Target detection

Infrared detectors

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