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喷气式飞机红外目标特性的研究,主要是根据红外辐射原理,对目标进行相对或绝对的测量,获得目标的精确参数,诸参数中以红外辐射强度和红外光谱显得尤为重要。本文就这两个参数加以分析和讨论。喷气式飞机的辐射强度当测量飞机的辐射强度时,应把飞机的尾喷管和喷气流做为点源辐射。要测出辐射强度随纵轴夹角(尾喷管方向为零度方向)的变化,其目的可确定导引头的攻击区和红外干扰防范。如果用热像仪或辐射温度计测出尾喷管的有效温度为T(K),管口面积为A(一般喷
The research on jet target characteristics of jet aircrafts is mainly based on the principle of infrared radiation. The relative or absolute measurement of the target is carried out to obtain the precise parameters of the target. It is particularly important to use infrared radiation intensity and infrared spectrum in the parameters. This article analyzes and discusses these two parameters. Radiation Intensity of Jet Aircraft When measuring the radiation intensity of an aircraft, the tail pipe and jet of the aircraft should be irradiated as a point source. To detect the radiation angle with the longitudinal axis (tail nozzle direction is zero direction) changes, the purpose of the seeker to determine the attack area and infrared interference prevention. If using a thermal imager or radiation thermometer to measure the effective temperature of the tail pipe T (K), the nozzle area A (general spray