【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,
【机 构】
：
Changchun Institute of Optics,Graduate School of Chinese Academy of Sciences,College of Electronic s
论文部分内容阅读
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 riB. The video signal processing for high-speed multi-channel TDICCD is implemented, which meets the required project index.
其他文献
Based on the coordinate rotation digital computer (CORDIC) algorithm, the high-speed kinematics calculation for a six degree of freedom (DOF) space manipulator
利用1989～2000年现场观测的气象资料,特别是自1997年以来在南极考察船上接收的NOAA卫星极轨高分辨的卫星云图,研究了普里兹湾气旋的生消发展;提出了夏季绕极气旋进入普里兹湾
对科技论文中有关水化学指标,如化学需氧量(COD)、亚硝酸盐氮、硝酸盐氮、氨氮和重金属离子价位的表达方式进行了探讨,并依据国家标准给出了合理正确的表达形式。
In the sc
应用沉积物粒径趋势分析方法，研究了南黄海中部细粒沉积区的沉积物输运趋势．结果表明，在南黄海中部(123.4°E, 35.1°N)左右的位置可能存在沉积中心，周边沉积物具有向这
To eliminate the perturbation of interceptor detection induced by aerodynamic heating, the head pur-suit (HP) guidance law for three-dimensional interception wa
砂岩在成岩过程中,次生矿物多达20余种。次生石英、钠长石、方解石和浊沸石等的形成不同程度地影响了砂岩的储集物性。形成次生石英的SiO2主要来源于碎屑长石的溶解粘土矿物
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
介绍化学稿件中几种常用到的溶液浓度表示方法,通过简单的换算,辨析与溶液浓度相关的量和单位的含义,并根据国家标准以规范形式表达。
Introduce several commonly used sol
应用离散元方法,分别研究了断裂刚度、内摩擦角、内聚力和几何形态等对其附近地应力场的影响.结果表明:这些因素对断裂附近的地应力场均有不同程度的影响,能造成主应力方位和
Modem dynamic tests such as networked collaborative pseudo-dynamic testing (PDT) provide new tools to study the dynamic performance of large and complex structu