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.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Lunar-edge based on-orbit modulation transfer function (MTF) measurement


    Beteiligte:
    Cheng, Ying (Autor:in) / Yi, Hongwei (Autor:in) / Liu, Xinlong (Autor:in)

    Kongress:

    AOPC 2017: Space Optics and Earth Imaging and Space Navigation ; 2017 ; Beijing,China


    Erschienen in:

    Proc. SPIE ; 10463


    Erscheinungsdatum :

    24.10.2017





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Lunar Transfer Orbit for SELENE

    Matsumoto, S. / Takizawa, Y. / Konishi, H. et al. | British Library Conference Proceedings | 2006


    Phase modulation method and system for reducing shadow time on lunar orbit by using orbit transfer

    LI HAIYANG / WEI WEIDONG / CUI WEI et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Lunar limb knife-edge optical transfer function measurements

    Shea, J. J. | British Library Online Contents | 1999


    On-orbit modulation transfer function estimation For RASAT

    Turkmenoglu, Mustafa / Yaglioglu, Burak | IEEE | 2013