固定翼飞机地面红外辐射特征测量及分析

摘要

The study on the IR radiation of fixed-wing airplane is important for military affairs. Based on atmospheric parameters,the atmospheric transmittance and the air path radiation were calculated by using the MODTRAN software. A long wave infrared measure equipment was used to perform infrared signature measurement experiment on a fixed-wing airplane. The results showed that the radiant intensity of caput、airframe、empennage were similar, and accord at different angle, and the radiant intensity of nozzle skin was higher than the radiant intensity of airframe; The radiant intensity of exhaust gases was marked differences at different angle, at the angle of back attaining maximum.%固定翼飞机的红外辐射特征研究具有重要意义。利用 MODTRAN 软件计算大气透过率和程辐射，用8～14m长波红外测量设备对固定翼飞机进行了红外辐射测量。测量结果表明，地面滑跑阶段固定翼飞机机头、机身、尾翼部分辐射亮度基本接近，且各个方向辐射亮度基本一致；尾喷管附近蒙皮辐射亮度远高于机身辐射亮度；尾焰辐射亮度具有方向性，后向辐射最强。