基于驱动脉冲延迟的线阵CCD亚像素测量系统  

LINEAR CCD SUB-PIXEL IMAGE CELL MEASUREMENT SYSTEM BASED ON DRIVING PULSE DELAY

作　　者：路杰[1,2] 杨博雄[3] 史雨辉[2] 

机构地区：[1]中国地震局地球物理研究所,北京100081 [2]中国地震局地震研究所,武汉430071 [3]武汉大学测绘遥感信息工程国家重点实验室,武汉430079

出　　处：《大地测量与地球动力学》2011年第3期156-159,共4页Journal of Geodesy and Geodynamics

基　　金：科技部科学仪器设备升级改造项目(2006JG005300)

摘　　要：通过CPLD设计间隔精准延迟的驱动脉冲,将线阵CCD空间信息转换为在一个脉冲单元内变化的时间信息,并通过高精度步进电机位移平台进行了检测,实验证明该方法可以有效地突破线阵CCD像元精度限制,实现亚像素测量。Distance between the image cell and its light-sensing area of linear CCD cannot be much small,so it has restricted application in high precision measurement system.As the spatial information is able to be converted to the time information changing in one pulse unit by the design of interval precise delay driving pulse.It is proved that the limitation on accuracy of linear CCD image cell can be breakthrough effectively,and so the sub-pixel measuring can be achieved and detected by the displacement platform of high precise stepping motor.

关 键 词：线阵CCD 脉冲驱动延迟 亚像素测量 像元 高精度 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]