研究了远程迎头探测飞机目标的红外辐射特性。分别介绍了飞机迎头的主要红外辐射源，飞机红外辐射特性的计算流程，以及红外光电系统入瞳接收到的蒙皮红外辐射能通量的计算模型，最后对远程探测水平路径大气透过率和飞机目标红外辐射强度进行仿真计算。

The infrared signature for remotely detection from the nose of aircrafts is studied in this paper. The major infrared sources, the calculation process of infrared signature, and the calculation model of infrared radiation flux which reach into the entrance pupil of infrared imaging systems is introduced respectively. Finally, the atmospheric transmittance from horizontal remote path and the infrared radiation intensity are simulated.