CCD signal acquisition and optimal digital denoise technology

doi:10.3772/j.issn.1006-6748.2021.04.011

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 空间光学应用研究室

	CCD signal acquisition and optimal digital denoise technology
	Li, Wencan 2,3; Wen, Yan 1,3; Wang, Dong 3; Yao, Dalei 3
刊名	High Technology Letters
	2021-12
卷号	27 期号:4 页码:422-429
关键词	charge-coupled device (CCD) low noise reset noise digital correlated double sampling optimal filte
ISSN号	10066748
DOI	10.3772/j.issn.1006-6748.2021.04.011
产权排序	1
英文摘要	To reduce the charge-coupled device(CCD) readout noise and improve the detection ability under low illumination and dim targets, a new low-noise CCD signal processing technology-CCD digital denoise-is gradually being employed in aerospace detection and other fields. In this study, the main readout noise of CCD detectors and its characteristics are analyzed. A CCD digital denoise system and an experimental platform are designed as well as established by using a PCIe data acquisition card. According to the characteristics of readout noise, some digital filters are analyzed and designed based on distributed kernel coefficient, and the optimal kernel coefficients are obtained through iteration. Then, CCD signal and filter model are established, and the optimal filter is designed to apply to the digital denoise system. Finally, according to the image data obtained from the system, the performance of the digital denoise system and digital filtering algorithm is evaluated and compared. At 500kHz and 1MHz CCD readout rates, the denoising performance of the optimal filter designed in the experiment is 16%-32% higher than that of the digital filter with kernel distribution coefficient, and 50%-60% higher than that of the traditional correlated double sampling technology. Copyright © by HIGH TECHNOLOGY LETTERS PRESS.
语种	英语
出版者	Inst. of Scientific and Technical Information of China
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/95622]
专题	西安光学精密机械研究所_空间光学应用研究室
作者单位	1.College of Automation, Northwestern Polytechnical University, Xi'an; 710068, China 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China;
推荐引用方式 GB/T 7714	Li, Wencan,Wen, Yan,Wang, Dong,et al. CCD signal acquisition and optimal digital denoise technology[J]. High Technology Letters,2021,27(4):422-429.
APA	Li, Wencan,Wen, Yan,Wang, Dong,&Yao, Dalei.(2021).CCD signal acquisition and optimal digital denoise technology.High Technology Letters,27(4),422-429.
MLA	Li, Wencan,et al."CCD signal acquisition and optimal digital denoise technology".High Technology Letters 27.4(2021):422-429.