红外探测器广泛应用于多光谱成像系统中,文章提出并建立了一种红外线阵时间延迟积分探测器的成像实验系统,阐述了成像系统的工作原理,对影响成像质量的两个主要因素电子稳像与自动对焦进行了深入分析.利用高精度直流测速机确定了转台转速与探测器的行转移频率,采用卡尔曼滤波算法滤除了测速机带来的噪声,提高了速度匹配精度.在分析比较红外相机四种检焦方法的基础上采用视频信号幅度法进行检调焦.在国家光学机械产品质量监督检验测试中心实地搭建了成像实验系统,并分别对5.3,6.4和9.2 mm宽度靶标成像.实验结果表明,采集到的原始靶标纹理清晰,照相分辨率达到了每毫米11.3对线,达到了实验预期目的.%Infrared detectors are widely used in multi spectral remote sensing systems, and in order to verify photographing principles of infrared time delay integration (TDI) detector, and make preparations for future research, a verification system for infrared TDI camera is proposed in the present paper. Experimental methods are explained thoroughly and two major factors which affect image quality are analyzed. First, the causes of image motion and their effects on the quality of image are studied,and a novel architecture using high precision DC-speed machine is presented, then the relationship between velocity of precision turntable and detectors line transfer frequency is determined by Kalman algorithm. Second, four focusing means are analyzed and compared, and video signal amplitude method is selected according to practical application. Finally, a genuine demo system is established in national supervision and test center for optics mechanics quality. 5. 3, 6. 4 and 9.2 mm drones are chosen for testing. Experimental results indicate that the obtained drone is vivid, and camera's resolution achieves 11.3 lines per mm, which satisfies preliminary aims.
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