CAJ | 학술논문

为了对抗电视成像制导武器，采取用可调强光照射目标的方式对CCD摄像系统的成像过程实施干扰。首先在介绍CCD摄像系统获取图像流程的基础上理论计算了输出图像灰度值与光照条件、摄像机参数之间的关系；然后，讨论了不同光强比和照射面积比等光照条件对CCD摄像机增益控制的影响，得到了增益随光照条件变化的调节曲线；最后开展了全局光照和局部光照对成像质量的影响以及按一定出光时序控制光照条件对成像质量影响的实验，并利用结构相似度(SSIM)对干扰图像进行质量评价。结果表明：可调强光能够对CCD成像过程造成很大干扰，使获取的图像质量大大降低。
위료대항전시성상제도무기，채취용가조강광조사목표적방식대CCD섭상계통적성상과정실시간우。수선재개소CCD섭상계통획취도상류정적기출상이론계산료수출도상회도치여광조조건、섭상궤삼수지간적관계；연후，토론료불동광강비화조사면적비등광조조건대CCD섭상궤증익공제적영향，득도료증익수광조조건변화적조절곡선；최후개전료전국광조화국부광조대성상질량적영향이급안일정출광시서공제광조조건대성상질량영향적실험，병이용결구상사도(SSIM)대간우도상진행질량평개。결과표명：가조강광능구대CCD성상과정조성흔대간우，사획취적도상질량대대강저。
The way that adjustable light interference the imaging process of the TV seeker is to confront TV guidance weapons. Based on introducing the process of camera obtaining images, the relationship between the image grayscale and illumination condition, camera parameters was theoretically analyzed firstly. Then the influence on gain control with different light intensity ratio and irradiating area ratio was discussed, and the adjustment curve of gain with the light conditions changing was got. Finally, the experiment about how global illumination and partial illumination influent on image quality and how the illumination in accordance with certain control time order influent the imaging process of CCD camera was carried on, and the quality of interference image by using the function of structural similarity(SSIM) was evaluated. The results show that this way of interference is very efficient. The adjustable light can interfere the imaging process of CCD camera, and can make image quality reduced greatly.