Accurate Determination of Conversion Gains of SVOM VT CCDs Based on a Signal-Dependent Charge-Sharing Mechanism
文献类型:期刊论文
作者 | Pan, Yue1,2; Fan, Xuewu1; Wang, Hu1; Zhao, Hui1; Qiu, Yulei3; Gao, Wei1; Zhang, Jian1 |
刊名 | ELECTRONICS |
出版日期 | 2021-04 |
卷号 | 10期号:8 |
ISSN号 | 2079-9292 |
关键词 | photon transfer curve charge coupled device (CCD) CCD characterization conversion gain SVOM VT |
DOI | 10.3390/electronics10080931 |
产权排序 | 1 |
英文摘要 | The signal-variance method and the photon transfer curve method are the most valuable tools for calculating the conversion gains of charge-coupled device (CCD) detectors. This paper describes the phenomena that arise in the conversion gain measurements of space multi-band variable object monitor (SVOM) visible telescope (VT) CCDs, where the results of the signal-variance method increase with the image gray level, and the results of the photon transfer curve method appear with nonlinearity, which is caused by the signal-dependent charge sharing mechanism of back-illuminated CCDs. A numerical simulation model based on random variables was adopted to analyze the influence of the mechanism on the gain determination. The model simulates all the signals and noise in the flat field image, including the photon signal and photon-shot noise, readout noise, fixed pattern noise, and the signal-dependent charge-sharing signal, and it demonstrated agreement with the experimental data. Then, we proposed a quadratic polynomial curve-fitting formula for the photon transfer curve, and we quantitatively analyzed the relationship between the fitting coefficients and the gain, the signal-dependent charge sharing coefficient, and the full well capacity using the control variable method. Finally, the formula was used to accurately determine the conversion gains of SVOM VT CCDs. |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000644013000001 |
源URL | [http://ir.opt.ac.cn/handle/181661/94724] |
专题 | 西安光学精密机械研究所_空间光学应用研究室 |
通讯作者 | Fan, Xuewu |
作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
推荐引用方式 GB/T 7714 | Pan, Yue,Fan, Xuewu,Wang, Hu,et al. Accurate Determination of Conversion Gains of SVOM VT CCDs Based on a Signal-Dependent Charge-Sharing Mechanism[J]. ELECTRONICS,2021,10(8). |
APA | Pan, Yue.,Fan, Xuewu.,Wang, Hu.,Zhao, Hui.,Qiu, Yulei.,...&Zhang, Jian.(2021).Accurate Determination of Conversion Gains of SVOM VT CCDs Based on a Signal-Dependent Charge-Sharing Mechanism.ELECTRONICS,10(8). |
MLA | Pan, Yue,et al."Accurate Determination of Conversion Gains of SVOM VT CCDs Based on a Signal-Dependent Charge-Sharing Mechanism".ELECTRONICS 10.8(2021). |
入库方式: OAI收割
来源:西安光学精密机械研究所
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。