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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
DOI10.1117/12.2285836
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
专题空间光学应用研究室
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.
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