| 全景式航空遥感器TDI CCD精密装调必要性分析及实现方法 |
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| 引用本文： | 张健,张玲花,刘立国,张景国,陈伟,张雷.全景式航空遥感器TDI CCD精密装调必要性分析及实现方法[J].中国光学,2014,7(6):996-1002. |
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| 作者姓名： | 张健 张玲花 刘立国 张景国 陈伟 张雷 |
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| 作者单位： | 1. 中国科学院 长春光学精密机械与物理研究所 航空光学成像与测量中国科学院重点实验室, 吉林 长春 130033;
2. 中国科学院大学, 北京 100049;
3. 中国科学院 长春光学精密机械与物理研究所 应用光学国家重点实验室, 吉林 长春 130033 |
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| 基金项目： | 国家863高技术研究发展计划资助项目 |
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| 摘 要： | 为保证全景式航空遥感器的成像质量,对其TDI CCD精密装调展开了研究.首先介绍了全景式航空遥感器及TDI CCD的工作原理;然后对TDI CCD时间延迟积分方向与摆扫像移方向夹角引起的TDI CCD调制传递函数的下降展开理论研究,计算结果表明全景式航空遥感器TDI CCD必须进行精密装调;最后给出了全景式航空遥感器TDI CCD精密装调的实现方法.装调结果表明,该方法可达到很高的装调精度,当级数为200级时,装调误差引起TDI CCD在乃奎斯特频率处的调制传递函数下降为0.999 9,完全满足全景式航空遥感器的使用要求.
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| 关 键 词： | 全景式航空遥感器 TDI CCD 装调误差 调制传递函数 积分级数 |
| 收稿时间： | 2014-09-11 |
Necessity and implement method of precise assembling of TDI CCD in sweep aerial remote sensor |
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| ZHANG Jian,ZHANG Ling-hua,LIU Li-guo,ZHANG Jing-guo,CHEN Wei,ZHANG Lei.Necessity and implement method of precise assembling of TDI CCD in sweep aerial remote sensor[J].Chinese Optics,2014,7(6):996-1002. |
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| Authors: | ZHANG Jian ZHANG Ling-hua LIU Li-guo ZHANG Jing-guo CHEN Wei ZHANG Lei |
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| Institution: | 1. Key Laboratory of Airborne Optical Imaging and Measurement, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China |
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| Abstract: | In order to ensure the imaging quality of sweep aerial remote sensor, the precise assembling of TDI CCD is researched. Firstly, the working principle of sweep aerial remote sensor and TDI CCD is introduced. Secondly, degradation in the Modulation Transfer Function(MTF) of TDI CCD caused by the angle between TDI direction of TDI CCD and image motion in the direction of pendulum swing is discussed. And the calculated results demonstrate that precise assembling is indispensable to TDI CCD in sweep aerial remote sensor. Finally, the method of precise assembling of TDI CCD in sweep aerial remote sensor is provided. The assembling and adjusting results show that the assembled method of TDI CCD can give very high precision, and the MTF at Nyquist frequency of TDI CCD caused by the assembling error is 0.999 9, when the stages of TDI CCD are 200. |
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| Keywords: | sweep aerial remote sensor TDI CCD assembling error modulation transfer function integration stage |
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