Multi-aperture synthetic aperture radar (SAR) systems in combination with an appropriate coherent processing of the individual aperture signals enable high resolution wide swath (HRWS) SAR imaging. An innovative reconstruction algorithm for such a digital beamforming on receive was presented that allows for HRWS even in case of a non-uniformly sampled data array in azimuth. This paper will compare this algorithm to different azimuth processing strate­gies regarding their performance in dependency of the overall sampling. Further, the algorithm is characterized theoretically regarding aliasing and residual ambiguities. In this context, optimization strategies are discussed to maximize the system’s performance by pattern tapering on transmit and “Pre-Beamshaping on Receive” networks that adaptively adjust the virtual sample positions.


    Access

    Download


    Export, share and cite



    Title :

    High Resolution Wide Swath SAR Imaging with Digital Beamforming - Performance Analysis, Optimization, System Design


    Contributors:

    Conference:

    2006 ; Dresden, Germany



    Publication date :

    2006-05-01


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Digital Beamforming on Receive: Techniques and Optimization Strategies for High-Resolution Wide-Swath SAR Imaging

    Gebert, Nicolas / Krieger, Gerhard / Moreira, Alberto | German Aerospace Center (DLR) | 2009

    Free access




    Staggered-SAR for High-Resolution Wide-Swath Imaging

    Villano, Michelangelo / Krieger, Gerhard / Moreira, Alberto | German Aerospace Center (DLR) | 2012

    Free access