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Optical Engineering

Adaptive infrared counter-countermeasure for two-color spinning concentric-annular-ring reticle seeker
Author(s): HyunKi Hong; SurngGabb Jahng; KyoungSoo Doo; Jong Soo Choi; Sung-Hyun Han
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Paper Abstract

This paper presents a dynamic simulation loop that gives tracking results for a two-color concentric annular ring (CAR) reticle seeker. Our simulation tool includes a target flare model and a proportional navigation guidance loop. The CAR reticle system's performance and the flare effects are analyzed in various scenarios. When a flare is present in the field of view, the simulation results show that the reticle seeker cannot maintain precise target tracking. We propose a two-color countercountermeasure using the least-mean-square method to cope with a presence of infrared (IR) flares. The proposed method makes use of simultaneous processing of the modulation output in two IR wavelength bands. One is the midwave IR (a primary input signal), and the other is the shortwave IR (a reference input signal). Simulation results have shown that our adaptive algorithm can achieve effective cancellation of flare signals with high intensity.

Paper Details

Date Published: 1 June 2001
PDF: 7 pages
Opt. Eng. 40(6) doi: 10.1117/1.1367344
Published in: Optical Engineering Volume 40, Issue 6
Show Author Affiliations
HyunKi Hong, Chung-Ang Univ. (South Korea)
SurngGabb Jahng, Chung-Ang Univ. (South Korea)
KyoungSoo Doo, Chung Ang Univ. (South Korea)
Jong Soo Choi, Chung-Ang Univ. (South Korea)
Sung-Hyun Han, Induk Inst of Technology (South Korea)

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