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.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Motion compensation for high resolution spotlight SAR


    Additional title:

    Bewegungskompensation fuer ein hochaufloesendes Punktlicht SAR


    Contributors:
    Hepburn, J.S. (author) / Reid, D.B. (author) / Widnall, W.S. (author) / Liang, D.F. (author) / Haslam, G.E. (author)


    Publication date :

    1984


    Size :

    7 Seiten, 11 Bilder, 4 Tabellen, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    DSP Implementing of Motion Compensation in Airborne Spotlight SAR

    Yu, W. / Zhu, Z. / Zhang, X. et al. | British Library Conference Proceedings | 1996


    Motion stabilized spotlight

    SPIVAK PAUL | European Patent Office | 2019

    Free access

    TerraSAR-X High Resolution Spotlight Persistent Scatterer Interferometry

    Gernhardt, S. / Adam, N. / Eineder, M. et al. | British Library Conference Proceedings | 2010


    High-Resolution Planetary Imaging Via Spotlight-Mode Synthetic Aperture Radar

    Webb, J. L. H. / Munson, D. C. / Stacy, N. J. S. et al. | British Library Conference Proceedings | 1994


    Predictable Motion in Unpredictable Domains: The Spotlight Tracking Problem

    Chung, Kimberly / Rao, Venkatesh / D'Andrea, Raffaello | AIAA | 2006