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高灵敏度红外焦平面列阵已经成为为现有各种军用平台提供全天候观察能力的核心技术。基于这种焦平面列阵的热成像仪能够精确地探测到距离远至10km的威胁物。然而,这种成像仪系统只能响应中波红外(3μm-5μm)或长波红外(8μm-12μm)一色波段,而且在工作时会产生大量虚警现象。这是由于潜在的地面目标与其背景之间的温差非常低所造成的。除此之外,太阳光闪烁、假目标、诱饵以及人造热源也会产生一些容易引起虚警的错误热特征。
High-sensitivity infrared focal plane arrays have become the core technology that provides all-weather observation capability for a variety of military platforms available today. A thermal imager based on this focal plane array can accurately detect threats up to 10km away. However, this imager system responds only to medium-wavelength infrared (3μm-5μm) or long-wave infrared (8μm-12μm) one-color bands, and produces a large number of false alarms during operation. This is caused by the very low temperature difference between the potential ground targets and their background. In addition, flickering sunlight, fake targets, decoys, and artificial heat sources also produce some of the false thermal characteristics that can cause false alarms.