烟雾对普通光学仪器的阻塞试验

烟雾对普通光学仪器的阻塞作用包括对信息光波的衰减、对像质的破坏和造成目标图像的无规抖动与闪烁.如何试验和评价烟雾对目标成像的影响是本文的主题.文中阐述了试验方法和试验中观察到的现象。

How to Test Smogs'Disturbing Military Optical Instruments

Smogs absorb and scatter light wave, thus cause great attenuation of the light energy. This has been paid attention to by the people who research Smogs'disturbing military optical instruments. But people have not devoted much attention to the fact that a small amount of smogs can destroy greatly military targets'imaging through optical instruments. Our experiments show the destroying clearly. we have found out that only a small amount of smogs could make The images of targets wobbling strongly, twinking unceasingly and being out of shapes seriously We consider that the destroying is caused by smogs owing to their diffusion, the diffusion makes light wave's front being distorted random. On the other hand, the continuously diffusion causes a transient flowing field in the optical path and leads to the optical path fluctuation. At the same time, smogs make light energy scattered and intensify the background, thus the contrast ration is reduced on the image plane. The paper expounds our experiments.