Real-time digital beamforming, combined with lightweight, large aperture reflectors, enable SweepSAR architectures, which promise significant increases in instrument capability for solid earth and biomass remote sensing. These new instrument concepts require new methods for calibrating the multiple channels, which are combined on-board, in real-time. The benefit of this effort is that it enables a new class of lightweight radar architecture, Digital Beamforming with SweepSAR, providing significantly larger swath coverage than conventional SAR architectures for reduced mass and cost. This paper will review the on-going development of the digital calibration architecture for digital beamforming radar instrument, such as the proposed Earth Radar Mission's DESDynI (Deformation, Ecosystem Structure, and Dynamics of Ice) instrument. This proposed instrument's baseline design employs SweepSAR digital beamforming and requires digital calibration. We will review the overall concepts and status of the system architecture, algorithm development, and the digital calibration testbed currently being developed. We will present results from a preliminary hardware demonstration. We will also discuss the challenges and opportunities specific to this novel architecture.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Advances in Digital Calibration Techniques Enabling Real-Time Beamforming SweepSAR Architectures


    Contributors:

    Conference:

    IEEE Aerospace Conference ; 2013 ; Big Sky, MT, United States


    Publication date :

    2013-03-02


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Advances in digital calibration techniques enabling real-time beamforming SweepSAR architectures

    Hoffman, James P. / Horst, Stephen / Perkovic, Dragana et al. | IEEE | 2013



    Digital Calibration of TR Modules for Real-time Digital Beamforming SweepSAR Architectures

    Hoffman, James Patrick / Perkovic, Dragana / Shaffer, Scott et al. | NTRS | 2011


    Advances in Digital Calibration Techniques Enabling Real-Time Beamforming SweepSAR Architectures

    Hoffman, James P. / Perkovic, Dragana / Ghaemi, Hirad et al. | NTRS | 2013


    Digital calibration system enabling real-time on-orbit beamforming

    Hoffman, James P. / Horst, Stephen / Veilleux, Louise et al. | IEEE | 2014