Research on high-speed TDICCD remote sensing camera video signal processing  

作　　者：ZHANG Da XU Shu-yan MENG Qing-ju 

机构地区：[1]Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China [2]Graduate School of Chinese Academy of Sciences, Beijing 100039, China [3]College of Electronic science & Engineering, Jilin University, Changchun 130012, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2009年第3期95-102,共8页中国邮电高校学报（英文版）

摘　　要：Video signal processing needs high signal-to-noise ratio （SNR） in high-speed time delay and integration charge coupled devices （TDICCD）. To solve this problem, this article first analyzes the characteristics of the output video signal of a new type of high-speed TDICCD and its operation principle. Then it studies the correlation double sample （CDS） method of reducing noise. Following that a synthesized processing method is proposed, including correlation double sample, programmable gain control, line calibration and digital offset control, etc. Among the methods, XRD98L59 is a video signal processor for the charge coupled device （CCD）. Application of this processor to one kind of high-speed TDICCD with eight output ports achieves perfect video images. The experiment result indicates that the SNR of the images reaches about 50 dB. The video signal processing for high-speed multi-channel TDICCD is implemented, which meets the required project index.Video signal processing needs high signal-to-noise ratio （SNR） in high-speed time delay and integration charge coupled devices （TDICCD）. To solve this problem, this article first analyzes the characteristics of the output video signal of a new type of high-speed TDICCD and its operation principle. Then it studies the correlation double sample （CDS） method of reducing noise. Following that a synthesized processing method is proposed, including correlation double sample, programmable gain control, line calibration and digital offset control, etc. Among the methods, XRD98L59 is a video signal processor for the charge coupled device （CCD）. Application of this processor to one kind of high-speed TDICCD with eight output ports achieves perfect video images. The experiment result indicates that the SNR of the images reaches about 50 dB. The video signal processing for high-speed multi-channel TDICCD is implemented, which meets the required project index.

关 键 词：charge coupled device correlated double sample programmable gain control digital offset control 

分 类 号：TN919.8[电子电信—通信与信息系统] TN386.5[电子电信—信息与通信工程]