Size and mass of high resolution satellite cameras are usually determined by the optics. Main problems, associated with minimizing the optics size are the degradation of the modulation transfer function (MTF), resulting in image smoothing, and darkening of the image. MTF degradation can be compensated to some extent by inverse filtering, but this can be done only at the expense of noise amplification, so a high initial signal-to-noise ratio (SNR) is required. With compact high resolution optics, however, a high SNR can be obtained only with a very long exposure time, as the focal plane image is very dark. This requires precise image motion compensation during the long exposure interval. This paper shows the enhanced concept of an optomechatromc camera stabilization assembly consisting of a high-speed onboard optical processor for real-time image motion measurement and a 2-axis piezo-drive assembly tor high precision positioning of the focal plane assembly. The proposed concept allows to minimize the size of the optics and the sensitivity to attitude disturbances. The image motion measurement is based on 2D spatial correlation of sequential images recorded from a motion matrix sensor ill the focal plane of the camera. The demanding computational requirements for the real-time 2D-correlation are covered by an embedded optical correlation processor (Joint Transform type).


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Opto-mechatronic image stabilization for a compact space camera


    Weitere Titelangaben:

    Opto-mechatronische Bildstabilisierung für eine kompakte Raumfahrtkamera


    Beteiligte:
    Janschek, K. (Autor:in) / Tchernykh, V. (Autor:in) / Dyblenko, S. (Autor:in)


    Erscheinungsdatum :

    2005


    Format / Umfang :

    6 Seiten, 15 Bilder, 6 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Opto-Mechatronic Systems Handbook

    Cho, H. / IEEE Aerospace and Electronics Systems Society | British Library Conference Proceedings | 2003


    Book Review - Opto-Mechatronic Systems Handbook

    Cho, H. | Online Contents | 2003



    Compact ultra-lightweight space camera structure

    ZONG SHU / WANG XINZHE / QU HUIDONG et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    A COMPACT CAMERA FOR SPACE NAVIGATION

    Gigli, S. / European Space Agency | British Library Conference Proceedings | 2006