Lunar-edge based on-orbit modulation transfer function (MTF) measurement | |
Cheng, Ying1,2; Yi, Hongwei1; Liu, Xinlong1 | |
2017 | |
会议名称 | Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017 |
会议录名称 | AOPC 2017: Space Optics and Earth Imaging and Space Navigation |
卷号 | 10463 |
会议日期 | 2017-06-04 |
会议地点 | Beijing, China |
出版者 | SPIE |
产权排序 | 1 |
摘要 | Modulation transfer function (MTF) is an important parameter for image quality evaluation of on-orbit optical image systems. Various methods have been proposed to determine the MTF of an imaging system which are based on images containing point, pulse and edge features. In this paper, the edge of the moon can be used as a high contrast target to measure on-orbit MTF of image systems based on knife-edge methods. The proposed method is an extension of the ISO 12233 Slanted-edge Spatial Frequency Response test, except that the shape of the edge is a circular arc instead of a straight line. In order to get more accurate edge locations and then obtain a more authentic edge spread function (ESF), we choose circular fitting method based on least square to fit lunar edge in sub-pixel edge detection process. At last, simulation results show that the MTF value at Nyquist frequency calculated using our lunar edge method is reliable and accurate with error less than 2% comparing with theoretical MTF value. © 2017 SPIE. |
作者部门 | 空间光学应用研究室 |
DOI | 10.1117/12.2285836 |
收录类别 | EI ; ISTP |
ISBN号 | 9781510614079 |
语种 | 英语 |
ISSN号 | 0277786X |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/29874 |
专题 | 空间光学技术研究室 |
作者单位 | 1.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17, Xinxi Road, Xi'an, 710119, China 2.University of Chinese, Academy of Sciences, Jingjia Road, Beijing, 100049, China |
推荐引用方式 GB/T 7714 | Cheng, Ying,Yi, Hongwei,Liu, Xinlong. Lunar-edge based on-orbit modulation transfer function (MTF) measurement[C]:SPIE,2017. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Lunar-edge based on-(1540KB) | 会议论文 | 限制开放 | CC BY-NC-SA | 请求全文 |
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