The Canadian Department of National Defence is developing a high resolution airborne spotlight synthetic aperture radar (SAR). To attain the image quality objectives of the project, it is essential that very accurate motion compensation be applied to the radar returns to reduce image degradation, caused by spurious antenna phase center motion, to acceptable levels. The proposed motion compensation system (SARMC) for the project is described. It includes a 'master' INS located neat the center of mass of the host aircraft and a 'slaved' strapdown IMU mounted on the ring gear supporting the radar antenna, as well as Doppler velocity and barometric altitude sensors. The performance of the SARMC has been evaluated both by analysis and computer simulation. These evaluations accounted for all major system error sources, including errors associated with sensors, transfer alignment and computation, with the system operating in an environment of moderate atmospheric turbulence. Results from these evaluations are presented.


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    Titel :

    Motion compensation for high resolution spotlight SAR


    Weitere Titelangaben:

    Bewegungskompensation fuer ein hochaufloesendes Punktlicht SAR


    Beteiligte:
    Hepburn, J.S. (Autor:in) / Reid, D.B. (Autor:in) / Widnall, W.S. (Autor:in) / Liang, D.F. (Autor:in) / Haslam, G.E. (Autor:in)


    Erscheinungsdatum :

    1984


    Format / Umfang :

    7 Seiten, 11 Bilder, 4 Tabellen, 7 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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