飞机全向红外辐射特征研究

Study on the Characteristics of the Omnidirectional IR Radiation of Airplane

正确研究飞机全向红外辐射特征是对飞机进行红外探测和跟踪的基础。文章根据红外辐射基本理论，通过建立飞机全向红外辐射坐标系和对飞机三个主要辐射源（蒙皮、尾焰和喷管）红外辐射计算方法的分析，构建了飞机全向红外辐射强度的理论计算模型，该模型解决了不同探测方向上的飞机红外辐射强度的计算。最后，利用此模型计算了3—5微米和8～12微米两个波段的某飞机全向红外辐射强度，并对仿真结果进行了分析，分析结果表明了理论模型的正确性。

To study the characteristics of the IR radiation of airplane is an important factor, on the basis of which IR Radiation of airplane is detected and tracked. Based on the infrared radiation, the theoretical calculation model is build to calculate the IR radiant intensity by establishing the reference frame of airplane＇ s omnidirectional IR radiation and analyzing calculation method of IR radiation of three primary radiant points （pout, nake and skin） on airplane. Finally, based on the model above, the omnidirectional IR radiant intensity of airplane in 3 - 5μm and 8 - 12μm are simulated and the results are analyzed. The results indicate that this is a simple and correet method to calculate the IR radiation of airplane.