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本文介绍了一种用于在稠密大气层内拦截导弹的双模导引头。该导引头由35GHz主动宽带共形天线阵列和带有红外全息光学元件(HOE)的光学窗组成。天线由高Q值、宽带、双极化的天线元件构成共形阵列。天线元件安装在具有高模量的蜂窝状结构的壁板上。微波束由电子控制指向所期望的视场。红外系统蓝宝石光学窗口内表面上应用全息光学元件,把目标入射能汇聚到探测器上。HOE的应用与传统的光学系统(包含透镜———反射镜系统等)相比,减轻了重量,并在内部结构安装上具有更好的灵活性。毫米波天线阵列和红外光学窗安装在高强度、刚度的合金构架上,能自动致冷,以便将飞行时的高温升、空中高负载对导引头性能的影响减到最小。
This article describes a dual-mode seeker for intercepting missiles in the dense atmosphere. The seeker consists of a 35GHz active wideband conformal antenna array and an optical window with an infrared holographic optical element (HOE). The antenna consists of a high-Q, broadband, dual-polarized antenna element to form a conformal array. The antenna element is mounted on a wall panel with a honeycomb structure of high modulus. The microwave beam is directed electronically to the desired field of view. Infrared sapphire optical window on the inner surface of the application of holographic optical components, the target incident can converge on the detector. The use of HOE reduces weight compared to traditional optical systems (including lens-mirror systems, etc.) and offers greater flexibility in the installation of internal structures. The millimeter-wave antenna array and infrared optical window are mounted on a high-strength, rigid alloy frame that automatically cools to minimize the effects of high temperature and airborne loads on seeker performance during flight.