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Lunar-edge based on-orbit modulation transfer function (MTF) measurement
Cheng, Ying1,2; Yi, Hongwei1; Liu, Xinlong1
2017
Conference NameApplied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Source PublicationAOPC 2017: Space Optics and Earth Imaging and Space Navigation
Volume10463
Conference Date2017-06-04
Conference PlaceBeijing, China
PublisherSPIE
Contribution Rank1
Abstract

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.

Department空间光学应用研究室
DOI10.1117/12.2285836
Indexed ByEI ; ISTP
ISBN9781510614079
Language英语
ISSN0277786X
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/29874
Collection空间光学应用研究室
Affiliation1.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
Recommended Citation
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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