第23卷第8期 2015年8月
文章编号
1004-924X(2015)08-2125-09
光学精密工程
Optics and Precision Engineering
航空红外相机的装调宋俊儒”，邢辉，穆生博，焦文春，何徐华
（北京空间机电研究所，北京100094）
Vol. 23No.8
Aug.2015
摘要：分析了航空红外相机的结构特点，论证了装调该类相机的关键技术。提出一种针对单相机镜头的装调和验证方法。该方法基于经纬仪测试探测器的线阵方向和视轴方间对相机进行粗调，结合质心亚像元定位算法对相机进行精调。提出了基于大口径平行光管和高精度可控转台覆盖所有镜头完成一次性装调的方案，解决了多个视轴相机组视轴高精度一致性装调的间题。实验表明：提出的方法满足航空红外相机的高精度、小公差的装调要求。单相机视轴与光轴夹角、多角度各组相机之间的视轴夹角的实际装调精度达到0.052pixel，比常规方法单像元的装调精度提高近20倍。提
关键词：航空红外相机；扫描镜；单镜头装调；质心亚像元定位；分组装调
中图分类号：V447.3
文献标识码：A
doi:10.3788/OPE.20152308.2125
Alignmentofaerialmulti-angleinfraredcamera Song Jun-ru',XING Hui,MU Sheng-bo,JIAO Wen-chun, HE Xu-hua
（BeijingInstituteofSpaceMechanics&Electricity，Beijing100094，China）
Correspondingauthor,E-mail:sjrl987bit@163.com
Abstract: The structural characteristics of aerial infrared cameras were analyzed,and the key technolo gies of alignment of this type of cameras were validated.A method for adjustment and validation of a single camera was proposed. The method adjusted the camera coarsely based on measuring the line ar-ray direction and optical axis direction of a detector by a theodolite, and adjusted the camera finely by combining with the sub-pixel subdivision location algorithm. A scheme to complete a one-time adjust-ment by covering all lenses was proposed based on a large diameter parallel light pipe and a high preci-sion controlled turntable, by which the grouped alignment and validation for the aerial infrared camera were implemented. The simulation results show that the method meets the demands of aerial infrared camera for high accuracy alignment and small tolerances. The adjustment precision of the angle among the boresights of multi-angle camera has reached o. 57 pixel, which is about 20 times that of the tradi tional methods. The proposed method provides a practical and feasible way to adjust precisely aerial infrared cameras and can be used in adjustment for other aerial sensors with similar structures.
Key words: aerial infrared camera; scanning mirror; lens alignment; sub-pixel subdivision location;
grouped alignment
收稿日期：2015-04-14；修订日期：2015-05-15.
基金项目：总装预研基金资助项目（No.9140A21010114HT05063)