时间延迟积分CCD空间相机信噪比的影响因素

刘则洵; 万志; 李宪圣; 李葆勇; 邵雅荣

doi:10.3788/OPE.20152307.1829

您当前的位置：

首页 >

文章列表页 >

时间延迟积分CCD空间相机信噪比的影响因素

辐射定标 | 更新时间：2020-08-12

- 时间延迟积分CCD空间相机信噪比的影响因素
- Influence factors on SNR of TDICCD space camera
- 光学精密工程 2015年23卷第7期页码：1829-1837
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目(No.863-2-5-1-13B)()
- DOI：10.3788/OPE.20152307.1829
  中图分类号： V447.3;V416.6
- 收稿日期：2015-03-20，
  
  修回日期：2015-04-27，
  
  纸质出版日期：2015-07-25
- 稿件说明：
移动端阅览
刘则洵, 万志, 李宪圣等. 时间延迟积分CCD空间相机信噪比的影响因素[J]. 光学精密工程, 2015,23(7): 1829-1837

LIU Ze-xun, WAN Zhi, LI Xian-sheng etc. Influence factors on SNR of TDICCD space camera[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1829-1837
刘则洵, 万志, 李宪圣等. 时间延迟积分CCD空间相机信噪比的影响因素[J]. 光学精密工程, 2015,23(7): 1829-1837 DOI： 10.3788/OPE.20152307.1829.

LIU Ze-xun, WAN Zhi, LI Xian-sheng etc. Influence factors on SNR of TDICCD space camera[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1829-1837 DOI： 10.3788/OPE.20152307.1829.

摘要

为了定量评估影响时间延迟积分(TDI)CCD空间相机信噪比的因素

研究了TDICCD空间相机成像机理和噪声来源

建立了相机的信噪比模型。分析了辐射亮度、积分级数、行频和系统增益(模拟增益)对信噪比的影响。搭建了实验室辐射定标系统

模拟了相机在轨工作时的辐射亮度条件。通过辐射定标对不同工作参数与相机信噪比的关系进行了验证。结果表明:对于TDICCD相机来说

光子散粒噪声、暗电流噪声和固定图形噪声在诸多噪声中起主导作用。相机的输出信号和信噪比均随着辐射亮度、积分级数和系统增益的增加而增大

随着行频的增加而减小。辐射亮度、积分级数、行频和系统增益对信噪比的影响量不同。具体来说

即当辐射亮度、积分级数和行频变化量分别为

倍、

倍时

其导致的信噪比变化量略大于

1/2

倍、

1/2

倍、

-1/2

倍。系统增益只能在相对较小的范围内影响信噪比

且信噪比变化幅度随着增益的提高逐渐减小。

Abstract

To quantitatively assess factors affecting the Signal to Ratio(SNR)of a Time Delay Integration(TDI)CCD camera

the imaging principle and noise sources of the TDICCD space camera were researched and a SNR model was established. The effects of the radiance lightness

integration stages

line transfer frequency and the system gain(analog gain)on the SNR were analyzed. A laboratory radiation calibration system was established to simulate the on-orbit radiance conditions of the camera. The relationship between the SNR and different working parameters were verified by radiation calibration. The calibration results show that the photon shot noise

dark current noise and the fixed pattern noise play a major role in all kinds of noise. The output signal and the SNR of the camera increase with the raises of the radiance

integration stages and the system gain and decrease with the raise of the line transfer frequency. The varieties of these factors have different influences on the SNR. Specifically

when the variations of the radiance

integration stages and the line transfer frequency are respectively

times

times and

times

the variations of the SNR are slightly larger than

1/2

times

1/2

times

-1/2

times

respectively. Moreover

the influence of the system gain on the SNR is in a relatively small range and the variation of the SNR decreases gradually with the raise of the system gain.

关键词

Keywords

references

顾营迎,沈湘衡,马军,等. 空间相机成像参数配置功能检验[J]. 光学精密工程,2014,22(5): 1183-1189. GU Y Y, SHEN X H, MA J, et al.. Verification of setting function for imaging parameters of space camera [J]. Opt. Precision Eng., 2014, 22(5): 1183-1189. (in Chinese)

李广泽,刘金国,宁飞,等. 基于等效成像模型的立体测绘相机成像信噪比分析[J]. 仪器仪表学报,2012,33(5): 1097-1101. LI G Z, LIU J G, NING F, et al.. Imaging SNR analysis of stereo mapping camera based on equivalent imaging model [J]. Chinese Journal of Scientific Instrument, 2012, 33(5): 1097-1101. (in Chinese)

宁永慧,郭永飞. 星上时间延迟积分CCD拼接相机图像的实时处理[J]. 光学精密工程,2014,22(2): 508-516. NING Y H, GUO Y F. Real-time image processing in TDICCD space mosaic camera [J]. Opt. Precision Eng., 2014, 22(2): 508-516. (in Chinese)

张宇,张立国,张星祥. 行间转移大面阵CCD相机的Smear噪声实时去除[J]. 光学精密工程,2013,21(9): 2388-2394. ZHANG Y, ZHANG L G, ZHANG X X. Real-time elimination of smear noise for large interline transfer area CCD camera [J]. Opt. Precision Eng., 2013, 21(9): 2388-2394. (in Chinese)

李云飞,李敏杰,司国良,等. TDI-CCD图像传感器的噪声分析与处理[J]. 光学精密工程,2007,15(8): 1196-1202. LI Y F, LI M J, SI G L, et al.. Noise analyzing and processing of TDI-CCD image sensor [J]. Opt. Precision Eng., 2007, 15(8): 1196-1202. (in Chinese)

王军,黄巧林. 信噪比和量化值的关系研究[J]. 航天返回与遥感,2005,26(2): 25-28. WANG J, HUANG Q L. Research on the relationship of the signal-to-noise and the quantized value [J]. Spacecraft Recovery & Remote Sensing, 2005, 26(2): 25-28. (in Chinese)

ROBERT D F, THEODORE A T. Comparison of SNR image quality metrics for remote sensing systems [J]. Optical Engineering, 2001, 40(4): 574-585.

付强,相里斌,景娟娟. 基于多光谱遥感成像链模型的系统信噪比分析[J]. 光学学报,2012,32(2): 0211001-1-7. FU Q, XIANG L B, JING J J. System signal-to-noise ratio analysis based on imaging chain model in multispectral remote sensing [J]. Acta Optica Sinica, 2012, 32(2): 0211001-1-0211001-7. (in Chinese)

ROBERT L L, ROBERT A K. Signal-to-noise ratio, contrast-to-noise ratio, and exposure time for imaging systems with photon-limited noise [J]. Optical Engineering, 2006, 45(5): 056403-1-06.

徐茜,苗丽峰,王跃明,等. 8192像元TDI-CCD相机信噪比的深入分析[J]. 红外技术,2008,30(12): 683-687. XU Q, MIAO L F, WANG Y M, et al.. In-depth analysis of TDI-CCD image senor [J]. Infrared Technology, 2008, 30(12): 683-687. (in Chinese)

马天波,郭永飞,李云飞. 科学级TDICCD相机的行频精度[J]. 光学精密工程,2010,18(9): 2028-2035. MA T B, GUO Y F, LI Y F. Precision of row frequency of scientific grade TDICCD camera [J]. Opt. Precision Eng., 2010, 18(9): 2028-2035. (in Chinese)

胡燕,金光,常琳,等. 椭圆轨道TDICCD相机像移匹配计算与成像验证[J]. 光学精密工程,2014,22(8): 2274-2284. HU Y, JIN G, CHANG L, et al.. Image motion matching calculation and imaging validation of TDICCD camera on elliptical orbit [J]. Opt. Precision Eng., 2014, 22(8): 2274-2284. (in Chinese)

石俊霞,李佩玥,李洪法,等. 遥感TDICCD相机侧摆成像及定位精度优化[J]. 液晶与显示,2014,29(5): 777-784. SHI J X, LI P Y, LI H F, et al.. Scroll imaging of space TDICCD remote sensing camera and optimization of image location accuracy [J]. Chinese Journal of Liquid Crystals and Displays, 2014, 29(5): 777-784. (in Chinese)

王德江,匡海鹏. 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[J]. 物理学报,2011,60(7): 077208-1-6. WANG D J, KUANG H P. Experimental study of the effects on signal noise ratio and dynamic range caused by analog gain for CCD [J]. Acta Phys. Sin., 2011, 60(7): 077208-1-6. (in Chinese)

陈宇恒,周建康,陈新华,等. 基于MODTRAN模型计算星载CCD相机信噪比[J]. 红外与激光工程,2009,38(5): 910-914. CHEN Y H, ZHOU J K, CHEN X H, et al.. Calculation of SNR of a satellite CCD camera based on MODTRAN [J]. Infrared and Laser Engineering, 2009, 38(5): 910-914. (in Chinese)

浏览量

604

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

高信噪比荧光检测微反射器零模波导器件的研制

惯性空间TDI相机长弧段星源主动扫描设计

基于量子滤光及跟踪算法的火箭发动机尾焰粒子测速方法研究

分焦平面偏振图像传感器信噪比标定

基于延迟多普勒图像的GNSS-R有效波高反演方法