首页>
外国专利>
Back illumination method for counter measuring IR guided missiles
Back illumination method for counter measuring IR guided missiles
展开▼
机译:反测量红外制导导弹的背照法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Commercial aircraft are protected from attack by infrared seeking guided missiles through the utilization of a ground-based directed infrared countermeasure system in which the deployment of an IR guided missile is detected off-aircraft and more particularly on the ground. An infrared laser beam is projected towards the detected missile such that the projected laser infrared radiation impinges upon the missile from the rear. The off-axis infrared radiation illuminates the IR transmissive dome at the head of the missile where it is internally reflected back towards the IR detector carried by the missile through the total internal reflection characteristics of the dome. The domes of these missiles are typically made of a high index of refraction IR transmissive materials such that the material is prone to total internal reflection. The infrared laser generated radiation is a modulated so as to interfere with the guidance system of the missile causing it to execute a turn and plunge to the ground. In one embodiment, the long wavelength infrared laser is a 100-W laser with a beam width of 100 microradians, thus to provide a zone of protection of about three miles.
展开▼