衍射对红外成像影响的仿真计算及校正算法研究  

Simulation and corrective algorithm for the effect of diffraction on infrared imaging

作　　者：朱诚[1] 吴军辉[2] 黄江源[2] 王娟[2] 

机构地区：[1]国防科技大学电子科学与工程学院 [2]中国人民解放军63891部队

出　　处：《电光与控制》2008年第2期43-46,共4页Electronics Optics & Control

摘　　要：采用夫朗和费衍射计算公式,建立了红外焦平面阵列成像衍射仿真模型,并用Mat-lab软件对不同距离探测像元之间的衍射影响进行了仿真。为了定量地描述像元间衍射影响,定义了衍射影响因子Bef、Def,并进行了计算。提出了一种基于焦平面阵列成像的衍射校正算法,根据探测像元的实际测量值和影响因子,利用联立方程组的方式对真实辐射值进行求解,并给出了该方程组的建立方法。最后对该算法的适用条件进行了分析。A simulation model of diffraction on Focal Plane Array （FPA） imaging is established based on Fraunhofer diffraction algorithm. The effect of diffraction between two units on FPA in different distance is calculated by using Matlab. Diffraction infection factors of Bef and Def are defined for describing the effect of dif- fraction among pixels. A diffraction corrective algorithm is put forward based on FPA imaging, and the real radiation value is obtained based on the measured value and affection factors. The applicable conditions of the algorithm is analyzed at last.

关 键 词：红外特征 衍射 图像校正 图像处理 仿真 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] O436.1[机械工程—光学工程]