| 航天TDI-CCD相机的MTF和像质分析 |
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| 引用本文： | 刘良云,张伯珩,李英才.航天TDI-CCD相机的MTF和像质分析[J].光学技术,2000,26(6):481-483. |
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| 作者姓名： | 刘良云 张伯珩 李英才 |
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| 作者单位： | 中国科学院,西安光机所空间光学室,陕西,西安,710068 |
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| 摘 要： | TDI- CCD相机在航天遥感中得到了越来越广泛的应用 ,但航天 TDI- CCD相机的像移是难以完全消除的或是不可避免的。推导和分析了 TDI- CCD相机的像移以及各种像移的 MTF表达式 ;参照美国国家图像解释分级标准( NIIRS) ,分析了像移量对像质的影响。结果表明 :当采用 96级延迟积分的 TDI- CCD器件时 ,同步误差只有小于 2 % ,成像质量才能得到保证 ,这与滚筒式扫描成像实验结果相吻合
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| 关 键 词： | TDI-CCD 调制传递函数 像移 像质 |
| 修稿时间： | 2000-03-15 |
Analysis of the MTF and image quality of TDI-CCD camera |
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| LIU Liang-yun,ZHANG Bo-heng,LI Ying-cai.Analysis of the MTF and image quality of TDI-CCD camera[J].Optical Technique,2000,26(6):481-483. |
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| Authors: | LIU Liang-yun ZHANG Bo-heng LI Ying-cai |
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| Abstract: | TDI CCD camera has been used widely in space based reconnaissance, but this kind of cameras are apt to introduce large amounts of image smear In this paper, firstly, the image smear sources are analyzed Secondly, the MTF of TDI CCD camera is computed in details according to different kinds of smears Finally, the image quality is evaluated according to NIIRS The result shows that our theory is coincident with the experiments done by our team |
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| Keywords: | time delayed integration charge coupled device(TDI CCD) modulation transfer function (MTF) image smear Image quality |
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