Three primary kinds of noise in the astronomical CCD camera system were analyzed: photon noise,readout noise and dark current noise,etc.
全面分析了天文CCD相机系统中的几类主要噪声:光子噪声、读出噪声和暗电流噪声等,提出了在低照度条件下的信噪比(SNR)模型,并进一步提出了在不同曝光时间长度下CCD的信噪比简化模型。
Parallel analog channels for oversampling scientific CCD camera signal;
科学级CCD并联过采样低噪声模拟信号通道
The optical system construction and working principles of intelligent north-finding gyroscope system based CCD(charge coupled device)image sensor and DSP(digital signal processing)technology is described.
介绍了基于CCD图像传感器与DSP技术的陀螺仪智能寻北系统的结构与工作原理,重点介绍了与DSP有关的电子硬件和软件部分,寻北方法在DSP特定环境下的应用,给出了系统的硬件原理图和软件流程图,最后总结了这套系统在陀螺仪寻北中的优点。
An instrument for auto measuring the width and length of wood board which based on the one-dimensional linear array CCD(charge coupled device)sensor and computer technique is introduced.
本文采用一维线阵CCD,利用照相机镜头成像的方法,通过调节镜头焦距就能获得木材直径的一维图像,打破了其他检测装置用平行光扫描的局限性,消除了光线不平行带来的误差,省去了平行光产生、扫描、会聚装置(如抛物镜等),使复杂精密的光学系统简单化,降低了成本。
EUV Response Calibration of Astronomic CCD
空间天文CCD在EUV波段的光谱响应定标测试
The Application of Real-time Operating System in Astronomic Fast Readout CCD;
实时操作系统在天文快读CCD上的应用
Technical Testing of Drift-scan CCD Camera;
天文漂移扫描CCD相机的技术验证
Research on Astronomical CCD Image Processing Technology Based on DSP;
基于DSP的CCD天文图像处理技术研究
Design and Implementation of Denoising and Star-Searching in CCD Astronomical Images;
CCD天文图像去噪和对象搜索算法的设计与实现
NOTE ON THE STABILITY OF THE #1 CCD CAMERA OF THE 1.56m REFLECTOR
关于上海天文台1.56m望远镜#1 CCD照相机的稳定性
PERFORMANCE STUDY OF THE NEW CCD CAMERAS OF YUNNAN OBSERVATORY
关于云南天文台1m望远镜新CCD照相机的某些性能
UNSOLVED DETERIORATION OF THE CCD CHIP IN I WAVEBAND WITH UNKNOWN CAUSE
CCD芯片在I波段未明原因的一种退变(英文)
The Study of Imaging Quality and Resolution of CCD Space Camera Base on Model Experiment and Computer Emulation;
基于模拟实验及计算机仿真的CCD航天相机影像分辨力的研究
The beam characteristics of exeimer lasers are detected by using a two dimensional CCD array.
本文采用二维CCD列阵检测准分子激光的光束特性。
an astronomical [a meteorological] observatory
天文 [气象] 台
In the paper the algorithm of calculating parameters, the method of structure layout, and the way of mounting linear CCD on laser spot source probe are analyzed at all details.
本文详细分析了点光源激光测头设计参数计算及结构布局方法，线阵CCD器件安装方式。
Hunan Culture & Hunan Literature and Art
湖湘文化与湖南文艺:昨天·今天·明天
vehicles for space astronomical observation
空间天文观测航天器
astronomical tide
天文潮天文潮天文潮汐(受日月吸力影响的潮汐
