集成相关双采样功能的A/D芯片在星载CCD设备中的应用

J4 ›› 2017, Vol. 34 ›› Issue (1): 15-22.

集成相关双采样功能的A/D芯片在星载CCD设备中的应用

方玲丽¹,王煜¹,邱晓晗²,田禹泽³,张泉²

1 中国科学院安徽光学精密机械研究所环境光学与技术重点实验室，安徽合肥 230031 2中国科学技术大学，安徽合肥 230026

收稿日期:2015-10-19 修回日期:2015-12-14 出版日期:2017-01-28 发布日期:2017-01-28
通讯作者: 王煜（1970-），北京人，博士，研究员，博士生导师，从事航空航天领域电子技术研究。 E-mail:yuwang@aiofm.ac.cn

Application of integrated correlated double sampling A/D chip in satellite-borne devices

FANG Lingli，WANG Yu, QIU Xiaohan,TIAN Yuze，ZHANG Quan

1 Key Laboratory of Environment Optics and Technology，Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031，China; 2 University of Science and Technology of China, Hefei 230026, China

Received:2015-10-19 Revised:2015-12-14 Published:2017-01-28 Online:2017-01-28

摘要/Abstract

摘要： 随着航天遥感载荷日益复杂，在CCD成像电路中相关双采样芯片（CDS）和通用A/D芯片构成的模数转换电路已不能满足要求。提出了基于集成相关双采样电路和A/D电路的单芯片（AD9814）CCD模数转换电路方案，用于星载光谱仪设备。介绍了该方案的芯片选择、软硬件设计和实验电路构建，并进行了相关实验，结果表明此光学系统的信噪比优于12 bit，AD9814的抗辐照指标为15 krad，所提出方案可应用于航天工程。

关键词: 图像处理；相关双采样；成像光谱仪；航天器件

Abstract: With the increasing complexity of remote sensing load, the analog/digital (A/D) conversion circuit composed of the correlated double sampling (CDS) chipand common A/D chip is unable to meet the requirements in CCD imaging circuit. A single chip (AD9814) CCD analog to digital conversion circuit is proposed based on the integrated CDS circuit and A/D circuit is proposed, which is used in satellite-borne spectrometer devices. The chip selection, hardware and software design and experimental circuit construction of the proposed scheme are introduced， and the related experiment is carried out. Results show that the optical signal-to-noise ratio of the system is better than 12 bit, and the radiation resistant index of AD9814 is 15 krad. The proposed scheme can be applied to aerospace engineering.

Key words: imaging processing; correlated double-sampling; imaging spectrometer; space devices

方玲丽王煜邱晓晗田禹泽张泉. 集成相关双采样功能的A/D芯片在星载CCD设备中的应用[J]. J4, 2017, 34(1): 15-22.

FANG Lingli，WANG Yu, QIU Xiaohan,TIAN Yuze，ZHANG Quan. Application of integrated correlated double sampling A/D chip in satellite-borne devices[J]. J4, 2017, 34(1): 15-22.