模拟增益对电荷耦合器件信噪比与动态范围影响的实验研究

王德江; 匡海鹏

doi:10.7498/aps.60.077208

摘要

电荷耦合器件(CCD)是遥感成像系统的核心部件,为了在低照度、低量化位数的情况下获得高信噪比与大动态范围的遥感图像,首先根据CCD的结构与噪声物理性质给出了模拟增益、量化位数与CCD信噪比的关系,接着搭建了CCD的积分球标定系统,依据实验数据建立了散粒噪声、光子响应非均匀性噪声以及基底噪声的数学模型,然后着重分析了低照度情况下模拟增益与信噪比之间的关系,最后搭建了实际成像系统,获取了低照度情况下不同模拟增益系数的遥感图像.结果表明理论分析、实验室积分球标定数据与实际成像图像符合良好,即模拟增益提高1至2倍

关键词:

Abstract

Charge coupled device (CCD) is a key component in a remote sensing system. In order to obtain high signal-to-noise ratio (SNR) and dynamic range in low illumination and quantization circumstance, first, according to CCD architecture and noise physical characteristics, relationship between analog gain quantization step and CCD SNR is proposed; next, integrating sphere calibration system is established, shot noise, photo response nonuniformity and noise floor model are also built, and the next relationship between analog gain and SNR in low illumination condition is analyzed thoroughly; finally, the practical photographing system is built, and remote images in different gain parameters are acquired. Theoretical analysis, experimental calibration, and practical images all indicate that when analog gain is increased by one to two times, the SNR is improved greatly and dynamic range is acceptable.

Keywords:

作者及机构信息

王德江²,
匡海鹏¹

(1)中国科学院长春光学精密机械与物理研究所,长春 130033; (2)中国科学院长春光学精密机械与物理研究所,长春 130033;中国科学院研究生院,北京 100049

基金项目: 国家高技术研究发展计划(863)(批准号:2006AA06A208)资助的课题.

Authors and contacts

(1)Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China; (2)Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;Graduate School of the Chinese Academy of Sciences,Beijing 100049,China

参考文献

[1]	Wang Z J, Tang B Q, Xiao Z G, Liu M B, Huang S Y, Zhang Y 2010 Acta Phys. Sin. 59 4136 (in Chinese) [王祖君、唐本奇、肖志刚、刘敏波、黄绍艳、张勇 2010 物理学报 59 4136]
[2]	Du H D, Huang S X, Shi H Q 2008 Acta Phys. Sin. 57 7685 (in Chinese) [杜华栋、黄思训、石汉青 2008 物理学报 57 4136]
[3]	Zhang C M, Huang W J, Zhang B C 2010 Acta Phys. Sin. 59 5479 (in Chinese) [张淳民、黄伟健、赵葆常 2010 物理学报 59 5479]
[4]	Holst G C 2008 Electro-Optical Imaging System Performance (Bellingham: SPIE Optical Engineering Press) p57
[5]	Holst G C 2007 CMOS/CCD Sensors and Camera Systems (Bellingham: SPIE Optical Engineering Press) p178
[6]	Healey G E, Kondepudy R 1994 IEEE trans. Pattern Anal. Mach. Intel. 16 267
[7]	Irie K, McKinnon A E, Unsworth K, Woodhead I M 2008 IEEE Trans. Circuits and Systems for Video Technology. 18 280
[8]	Chen L, Zhang X, Lin J, Sha D 2009 Opt. Laser Technol. 41 574
[9]	Yang B X 2005 Spacecraft Recovery & Remote Sensing 26 22 (in Chinese)[杨秉新 2005 航天返回与遥感 26 22]
[10]	Hu J, Wang D 2009 Opt. Precision Eng. 8 1819 (in Chinese) [胡君、王栋 2009 光学精密工程 8 1819]
[11]	Ma T B, Guo Y F, Li Y F 2010 Opt. Precision Eng. 18 2028 (in Chinese) [马天波、郭永飞、李云飞 2010 光学精密工程 18 2028]
[12]	Steven L S 1999 Opt. Eng. 38 821
[13]	Robert D F, Theodore T 2001 Opt. Eng. 40 574
[14]	Robert D F 1999 Opt. Eng. 38 1229
[15]	Robert D F, Theodore T, Jason R C, James A M 2002 Opt. Eng. 41 1957
[16]	Robert D F, Theodore T 1999 Opt. Eng. 38 815
[17]	Zarco-Tejada P J, Berni J A, Suarez L 2009 Remote Sens. Environ.113 1262
[18]	Tominaga. Shoji, Tanaka Norihiro 2008 J. Electron Imaging. 17 43022
[19]	Olivier Romain, Thomas Ea, Patrick Garda 2007 Opt. Eng. 26 103202

施引文献

[1]	Wang Z J, Tang B Q, Xiao Z G, Liu M B, Huang S Y, Zhang Y 2010 Acta Phys. Sin. 59 4136 (in Chinese) [王祖君、唐本奇、肖志刚、刘敏波、黄绍艳、张勇 2010 物理学报 59 4136]
[2]	Du H D, Huang S X, Shi H Q 2008 Acta Phys. Sin. 57 7685 (in Chinese) [杜华栋、黄思训、石汉青 2008 物理学报 57 4136]
[3]	Zhang C M, Huang W J, Zhang B C 2010 Acta Phys. Sin. 59 5479 (in Chinese) [张淳民、黄伟健、赵葆常 2010 物理学报 59 5479]
[4]	Holst G C 2008 Electro-Optical Imaging System Performance (Bellingham: SPIE Optical Engineering Press) p57
[5]	Holst G C 2007 CMOS/CCD Sensors and Camera Systems (Bellingham: SPIE Optical Engineering Press) p178
[6]	Healey G E, Kondepudy R 1994 IEEE trans. Pattern Anal. Mach. Intel. 16 267
[7]	Irie K, McKinnon A E, Unsworth K, Woodhead I M 2008 IEEE Trans. Circuits and Systems for Video Technology. 18 280
[8]	Chen L, Zhang X, Lin J, Sha D 2009 Opt. Laser Technol. 41 574
[9]	Yang B X 2005 Spacecraft Recovery & Remote Sensing 26 22 (in Chinese)[杨秉新 2005 航天返回与遥感 26 22]
[10]	Hu J, Wang D 2009 Opt. Precision Eng. 8 1819 (in Chinese) [胡君、王栋 2009 光学精密工程 8 1819]
[11]	Ma T B, Guo Y F, Li Y F 2010 Opt. Precision Eng. 18 2028 (in Chinese) [马天波、郭永飞、李云飞 2010 光学精密工程 18 2028]
[12]	Steven L S 1999 Opt. Eng. 38 821
[13]	Robert D F, Theodore T 2001 Opt. Eng. 40 574
[14]	Robert D F 1999 Opt. Eng. 38 1229
[15]	Robert D F, Theodore T, Jason R C, James A M 2002 Opt. Eng. 41 1957
[16]	Robert D F, Theodore T 1999 Opt. Eng. 38 815
[17]	Zarco-Tejada P J, Berni J A, Suarez L 2009 Remote Sens. Environ.113 1262
[18]	Tominaga. Shoji, Tanaka Norihiro 2008 J. Electron Imaging. 17 43022
[19]	Olivier Romain, Thomas Ea, Patrick Garda 2007 Opt. Eng. 26 103202

计量

文章访问数: 8771
PDF下载量: 829
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

搜索

留言板