A coarray-based near-field, wideband synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented. While coarray techniques offer significant reduction in the number of array elements for a given angular resolution, the hybrid subarray-stepped frequency realization of wideband systems simplifies implementations and offers flexibility in beamforming. Proof of concept is provided using real data collected in an anechoic chamber for several pulse shapes and array weightings.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Design and implementation of near-field, wideband synthetic aperture beamformers


    Contributors:
    Ahmad, F. (author) / Frazer, G.J. (author) / Kassam, S.A. (author) / Amin, M.G. (author)


    Publication date :

    2004-01-01


    Size :

    2406585 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Robust Capon Beamformers for Wideband Acoustic Imaging

    Wang, Zhisong / Li, Jian / Nishida, Toshikazu et al. | AIAA | 2003


    Ultra Wideband Synthetic Aperture Radar for Landmine Detection

    Cooper, P. / AIAA / ICAS | British Library Conference Proceedings | 2003


    Postfiltering in Digital Beamformers

    C. Wang, H. S. | IEEE | 1976