Precision Focal Measuring System Based on CCD Aerial Cameras

摘要：

　　In view of bigger error (0.24%) of conventional measuring method,this paper focuses on a bigger aperture aerial camera focus measuring system and discusses measuring principle and structure of the system.The image in this system is received by the collimator of long focus and area CCD (Charge Coupled Devices) camera.Using dynamic scanning and center of gravity method,the system measures effectively the location and size of the optimum image.The image resolution of CCD can be up to one tenth of the size of the photosensitive sensor and the precision of 0.1percent of focus measuring can be obtained.The problem of the larger error of conventional measuring method is salved fundamentally.The accurate,real-time and on-line measurement of the focus of aerial camera lens can be realized and the exact determination of the position of the surface can be determined.

关键词： charge coupled devices aerial camera center of gravity method focus

作者: Mei Zhao Yufang Sha Fei Guo Mingquan Yang

作者单位: Aviation University of Air Force,Changchun,Jilin,130022,China

会议类型: 国际会议

会议名称: 2012 International Meeting on Opto-Electronics Engineering and Materials Research(OEMR2012)(2012光电工程与材料国际会议)

会议地点: 沈阳

会议语种:英文

页码: 304-307

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）