| TDI-CCD相机动态成像的速度同步控制研究 |
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| 引用本文： | 张林,吴晓琴,袁暋. TDI-CCD相机动态成像的速度同步控制研究[J]. 传感器与微系统, 2005, 24(12): 10-12,15 |
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| 作者姓名： | 张林 吴晓琴 袁暋 |
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| 作者单位： | 1. 南京理工大学,机械工程学院,江苏,南京,210094;合肥学院,安徽,合肥,230022
2. 合肥学院,安徽,合肥,230022 |
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| 摘 要： | 在介绍时间延迟积分电荷耦合器件(TD I-CCD)的结构与工作原理基础上,通过像移调制传递函数(MTF)分析了TD I-CCD行扫速率与运动像不同步时对相机成像质量的影响。理论和实验仿真表明:在奈奎斯特频率范围内,只要将TD I-CCD推扫成像过程中的同步误差控制在一定的范围内,就可以明显地减少像移对成像质量的影响,最后,给出了2种简便和实用的同步控制方法。
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| 关 键 词： | 时间延迟积分电荷耦合器件 同步控制 调制传递函数 像移 |
| 文章编号： | 1000-9787（2005）12-0010-03 |
| 收稿时间： | 2005-06-26 |
| 修稿时间： | 2005-06-26 |
Synchronous control research of TDI-CCD camera dynamic imaging |
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| ZHANG Lin,WU Xiao-qin,YUAN Ming. Synchronous control research of TDI-CCD camera dynamic imaging[J]. Transducer and Microsystem Technology, 2005, 24(12): 10-12,15 |
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| Authors: | ZHANG Lin WU Xiao-qin YUAN Ming |
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| Abstract: | First of all,the structure and principle of time delay integration charge coupled devices(TDI-CCD) image sensor have been introduced.Second,with the help of the modulated transfer function(MTF),the negative effect on image quality is fully analyzed,which is caused by the mismatch between TDI-CCD line scanning and velocity of image motion.Theoretic analysis and experiment simulation show that the negative effect can be reduced greatly only that mismatch error band is strictly controlled in the scope of Nyquist frequency during process of imaging.Finally,two practicable and simple synchronous control ways are presented. |
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| Keywords: | time delay integration charge coupled devices(TDI-CCD) synchronous control modulated transfer function(MTF) image motion |
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