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Test for Dynamic Range of scientific CCD imaging system
Liang, Shaolin1,2; Wang, Yongmei1,2; Mao, Jinghua1; Jia, Nan1; Shi, Entao1
作者部门空间环境部
会议录名称FIFTH CONFERENCE ON FRONTIERS IN OPTICAL IMAGING TECHNOLOGY AND APPLICATIONS (FOI 2018)
2018
卷号10832
页码UNSP 1083205
DOI10.1117/12.2505774
语种英语
ISSN号0277-786X
ISBN号978-1-5106-2290-6
摘要Dynamic Range is an important index to evaluate the performance of scientific CCD imaging system, which reflects the detection capability to the signal. At present, the description of DR is mainly expressed by the ratio of CCD full well capacity to readout noise at home and abroad. On the basis of clarifying the imaging process of scientific CCD, a method that defines linearity critical point as the last point where the Linearity Error doesn't exceed -3%, minimum exposure point as the point where the SNR equals to 1, then precisely expresses and calculates DR is introduced. Afterwards in the lab, 100 light and 100 dark images of CCD at different exposure time are collected by using the integrating sphere and other equipment, the relationship between the signal and exposure time is calculated to find out the linearity critical point and minimum exposure point and calculate the DR of CCD. The result shows that the DR of the measured CCD is 61.76dB, which corresponds to the theoretical analysis and verifies the validity of the test. Finally, the factors influencing the DR of CCD are analyzed, the advice to improve the DR is introduced.
关键词scientific CCD Dynamic Range Linearity Error SNR linearity critical point minimum exposure point
会议名称5th Conference on Frontiers in Optical Imaging Technology and Applications (FOI)
会议日期JUL 25-27, 2018
会议地点Hefei, PEOPLES R CHINA
收录类别EI ; CPCI
引用统计
文献类型会议论文
条目标识符http://ir.nssc.ac.cn/handle/122/6686
专题空间环境部
作者单位1.National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式
GB/T 7714
Liang, Shaolin,Wang, Yongmei,Mao, Jinghua,et al. Test for Dynamic Range of scientific CCD imaging system[C],2018:UNSP 1083205.
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