量子电子学报, 2017, 34 (1): 15, 网络出版: 2017-02-09
集成相关双采样A/D芯片在星载设备中的应用
Application of integrated correlated double sampling A/D chip in satellite-borne devices
图像处理 相关双采样 成像光谱仪 航天器件 imaging processing correlated double-sampling imaging spectrometer space devices
摘要
随着航天遥感载荷的日益复杂,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, 所提出方案可用于航天工程。
Abstract
With the increasing complexity of remote sensing load, the analog/digital (A/D) conversion circuit composed of the correlated double sampling (CDS) chip and 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 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.
方玲丽, 王煜, 邱晓晗, 田禹泽, 张泉. 集成相关双采样A/D芯片在星载设备中的应用[J]. 量子电子学报, 2017, 34(1): 15. FANG Lingli, WANG Yu, QIU Xiaohan, TIAN Yuze, ZHANG Quan. Application of integrated correlated double sampling A/D chip in satellite-borne devices[J]. Chinese Journal of Quantum Electronics, 2017, 34(1): 15.
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