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Research on the readout noise suppression method for digital correlated double sampling
Duan, Wei1,2,3; Song, Qian1,2,3; Wei, Ming-Zhi1; Zhao, Zhao-Wang1,3; Wang, Wei1,3; Zhang, Yu-Heng1,3; Feng, Zhi-Wei1,2,3
2021
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:1Pages:9
AbstractAs the areas of CCD detectors and CCD mosaics have become larger and larger, the number of readout channels in astronomical cameras has increased accordingly to keep the image readout time within an acceptable range. For the large area cameras or the mosaic cameras, the analog Correlated Double Sampling (aCDS) circuit used in traditional astronomical cameras for suppressing readout noise is difficult to integrate into the camera controllers within the constraints of the space and energy consumption. Recently, digital CDS (dCDS) technology has been developed to solve this problem, which also offers novel analysis and noise suppression methods. In this study, a mathematical model is presented to conveniently analyze the frequency characteristic of a dCDS circuit, which is then simulated by a numerical method for investigating the noise suppression capability with different sampling weights. Importantly, using this model, the extreme point with lowest readout noise can be predicted for a certain dCDS model; and for a specific CCD readout frequency, readout noise can be suppressed by selecting the proper dCDS model. A testing system is then constructed for validating the efficiency of the proposed method.
Keywordinstrumentation detectors methods analytical methods numerical
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1088/1674-4527/21/1/13
Language英语
Funding ProjectNational Natural Science Foundation of China[11403050]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000616416000001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79530
Collection中国科学院国家天文台
Corresponding AuthorDuan, Wei
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Duan, Wei,Song, Qian,Wei, Ming-Zhi,et al. Research on the readout noise suppression method for digital correlated double sampling[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(1):9.
APA Duan, Wei.,Song, Qian.,Wei, Ming-Zhi.,Zhao, Zhao-Wang.,Wang, Wei.,...&Feng, Zhi-Wei.(2021).Research on the readout noise suppression method for digital correlated double sampling.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(1),9.
MLA Duan, Wei,et al."Research on the readout noise suppression method for digital correlated double sampling".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.1(2021):9.
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