凝视型红外搜索跟踪系统对高速飞机作用距离的分析

考虑了太阳、天空、地面等背景辐射以及辐射在大气传输中的衰减,分析对比了飞机在不同飞行速度、不同气象环境、不同探测路径等条件下,包括飞机蒙皮、飞机发动机喷口和飞机发动机尾气流——尾焰这三部分主要辐射源的辐射特性,建立了高速飞机红外辐射特性的物理模型,利用计算结果进一步建立了红外搜索跟踪系统对高速飞机作用距离的数学模型。讨论了影响高速飞机红外作用距离的内外部因素,如飞机的内部传热、探测路径方向与有效辐射面积等。

Analysis on operating range of a staring infrared search and track system for high - speed aircraft

Considering the sun,the sky as well as the earth etc background radiation and radiation attenuation in the atmosphere,the radiation characteristic of high-speed aircraft from three major IR radiation sources,including the aircraft skin,aircraft engines,aircraft engines vents and air currents-flame were analyzed and contrasted at various speeds,weather environment and exploring angels.The physics model of the IR radiation characteristic of high-speed aircraft was established.Ulteriorly,using this result,the mathematics model of operating range of IR search and track system for high-speed aircraft was created, and some factors effected on operating range of high-speed aircraft,including the diathermanous of aircraft,exploring angels and the valid radiation area etc were discussed.