高超音速飞行器红外探测预警分析

当目标飞行速度高于5Ma时,其辐射峰值波长位于短波红外的工作范围,并且具有辐射功率大、随时间变化快等显著特征,最适于被短波红外传感器探测.短波红外探测器将大气粒子反射的目标的入射光子转换为电信号.通过监测电信号幅度的变化来判断有无强辐射源趋近,从而将预警时间提前.

Analysis of Infrared Detection and Early Warning for Hypersonic Vehicle

When the flight velocity of a target is more than 5 Ma, its radiation peak wavelength falls within the range of shortwave infrared （SWlR）, and with the distinctive characteristics such as stronger in radiated power and varying fast with time, it is easy to be detected by the SWlR sensor. SWlR detector transduces the incident photons of the target reflected by atmOspheric particles into electrical signals. Through monitoring the amplitude change of electrical signals, a strong radiation source approaching can be estimated, and then the early warning time can be advanced.