Measurement and experiment of modulation transfer function at Nyquist frequency for space optical cameras
文献类型：期刊论文
| 作者 | L, H.-Y.; X.-C. Xue; Y.-L. Zhao and C.-S. Han |
| 刊名 | Guangxue Jingmi Gongcheng/Optics and Precision Engineering
 |
| 出版日期 | 2015 |
| 卷号 | 23期号:5页码:1484-1489 |
| 英文摘要 | To precisely measure the Modulation Transfer Function (MTF) of a space camera at the Nyquist frequency before entering orbit, measuring methods were researched and some experiments for measuring the MTF at the Nyquist frequency were carried out. The schematic diagram of the MTF measurement was given. On the basis of the schematic diagram, the transfer process of a square wave target at Nyquist frequency in whole chain and the contrast ratio model of a terminal target image were investigated. Furthermore, the relationship between the contrast ratio of terminal target image and the MTF at Nyquist frequency and the error formation were given. Finally, the MTF at Nyquist frequency of the camera was measured in a vacuum environment and the obtained results were corrected. The result shows that the MTF of a space camera at Nyquis frequency is 0.213 at a lab condition, and that after the optical system in the camera architecture is 0.602 by conversion. Moreover, the MTF after Time Delay and Integration (TDICCD) is calculated as 0.946, which is close to the theoretical value. These results indicate that the derivation of our method is basically precise, and is capable of satisfying the requirement of space optical cameras for the MTF measurement before entering orbit. , 2015, Chinese Academy of Sciences. All right reserved. |
| 收录类别 | EI |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/56045]  |
| 专题 | 长春光学精密机械与物理研究所_中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | L, H.-Y.,X.-C. Xue,Y.-L. Zhao and C.-S. Han. Measurement and experiment of modulation transfer function at Nyquist frequency for space optical cameras[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2015,23(5):1484-1489. |
| APA | L, H.-Y.,X.-C. Xue,&Y.-L. Zhao and C.-S. Han.(2015).Measurement and experiment of modulation transfer function at Nyquist frequency for space optical cameras.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,23(5),1484-1489. |
| MLA | L, H.-Y.,et al."Measurement and experiment of modulation transfer function at Nyquist frequency for space optical cameras".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 23.5(2015):1484-1489. |
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