| 航天高速TDICCD相机视频信号采样技术 |
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| 引用本文： | 石俊霞,郭永飞,司国良,朱宏殷.航天高速TDICCD相机视频信号采样技术[J].光电工程,2011(9):13-18. |
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| 作者姓名： | 石俊霞 郭永飞 司国良 朱宏殷 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所;中国科学院研究生院; |
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| 基金项目： | 中科院重大科研装备研制项目 |
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| 摘 要： | 针对航天高速TDICCD相机,为了提高其成像质量,提出了对相关双采样信号进行纳秒级延时的精确采样方法和对驱动芯片的温度漂移进行自适应补偿的方法.首先介绍了相关双采样(CDS)的原理,分析了采样位置对TDICCD相机的影响,然后提出了利用FPGA内部进位链资源实现纳秒级延时从而对采样信号进行精确调整的方法,同时分析了驱动...
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| 关 键 词： | 航天相机 TDICCD 精确采样 温度补偿 |
Sampling Technology on Video Signal of Spaceborne High Speed TDICCD Camera |
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| SHI Jun-xia,GUO Yong-fei,SI Guo-liang,ZHU Hong-yin.Sampling Technology on Video Signal of Spaceborne High Speed TDICCD Camera[J].Opto-Electronic Engineering,2011(9):13-18. |
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| Authors: | SHI Jun-xia GUO Yong-fei SI Guo-liang ZHU Hong-yin |
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| Affiliation: | SHI Jun-xia~1,2,GUO Yong-fei~1,SI Guo-liang~1,ZHU Hong-yin~1,2(1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | In order to improve the image quality of a high speed airborne Time Delay and Integration Charge Coupled Device(TDICCD) camera,a method to precisely adjust the Correlated Double Sample(CDS) signals is proposed.Moreover,a method to compensate the temperature excursion of the driver is proposed.First,the principle of CDS is introduced,and the influence of sample position on a TDICCD camera is analyzed.Then,a method is proposed to adjust the sample signals precisely,which is based on the MUXCY in FPGA.At the s... |
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| Keywords: | spaceborne camera TDICCD precisely sampling temperature compensation |
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