CAJ | 학술논문

天空背景的红外辐射特征对目标侦察探测具有重要意义。利用3μm～5μm中波、8μm～12μm长波红外测量设备对天空背景红外辐射亮度进行了测量，长波波段辐射亮度在3.7～13.6 W?m－2?sr－1，中波波段辐射亮度在0.05～0.48 W?m－2?sr－1，相同条件长波辐射亮度高于中波辐射亮度1～2个数量级；随着观测角增大，天空背景辐射亮度显著降低，同时太阳辐射、大气温度等因素也对天空背景辐射有较大的影响。利用测量结果仿真分析了天空背景辐射对目标侦察探测距离的影响，结果表明当观测角由9.6°降低到1.9°时，红外搜索跟踪系统探测距离会减少41.5%～46.2%。
천공배경적홍외복사특정대목표정찰탐측구유중요의의。이용3μm～5μm중파、8μm～12μm장파홍외측량설비대천공배경홍외복사량도진행료측량，장파파단복사량도재3.7～13.6 W?m－2?sr－1，중파파단복사량도재0.05～0.48 W?m－2?sr－1，상동조건장파복사량도고우중파복사량도1～2개수량급；수착관측각증대，천공배경복사량도현저강저，동시태양복사、대기온도등인소야대천공배경복사유교대적영향。이용측량결과방진분석료천공배경복사대목표정찰탐측거리적영향，결과표명당관측각유9.6°강저도1.9°시，홍외수색근종계통탐측거리회감소41.5%～46.2%。
The infrared radiation characteristics of sky background on the target detection has important significance. The sky background infrared radiation intensity was measured by using 3-5μm medium wave and 8-12 μm long wave infrared radiation measuring equipment, with 3.7-13.6 W?m-2?sr-1 radiation brightness in long wave band and 0.05-0.48 W?m-2?sr-1 radiation brightness in medium wave band. Under the same conditions, long wave radiation brightness is 1-2 magnitude higher than that of medium wave. With the observation angle increases, the brightness of the sky background radiation significantly reduced, and at the same time, solar radiation, air temperature and other factors also have a great effect on the sky background radiation. The measurement results of simulation and analysis of the sky background radiation of target reconnaissance detection range, the results show that when the view angle decreased from 9.6 degrees to 1.9 degrees, infrared search and track system’s detection range will reduce 41.5%-46.2%.