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目前的红外导弹告警装置的研制得益于焦平面列阵和信号处理技术的最新进展。上一代机械结构复杂的大型扫描传感器正在被采用凝视探测器列阵的紧凑型传感器取代。新的传感器存在着一些新的设计问题,而且一般都具有更严格的信号处理要求。在本文中,我们将研究来犯导弹及背景的红外特性,并且说明我们如何能够表征凝视列阵传感器的性能以及用于目标—背景判别的有关信号处理技术。特别有意义的是多色判别技术的发展以及对于采用非致冷探测器的可行性的评估。
The development of the current infrared missile warning device benefits from the latest developments in focal plane arrays and signal processing technologies. The last generation of large, complex mechanical scanning sensors was being replaced by compact sensors that employ gaze detector arrays. The new sensor has some new design issues, and generally has more stringent signal processing requirements. In this article, we will look at the infrared characteristics of missiles and backgrounds, and show how we can characterize gaze array sensors and the signal-processing techniques used for target-background discrimination. Of particular interest is the development of multicolor discrimination techniques and the assessment of the feasibility of using non-refrigerated detectors.