The displaced phase centre (DPC) technique will enable a wide swath SAR with high azimuth resolution. In a classic DPC system, the PRF has to be chosen such that the SAR carrier moves just one half of its antenna length between subsequent radar pulses. Any deviation from this PRF will result in a nonuniform sampling of the synthetic aperture. This paper shows that an unambiguous reconstruction of the SAR signal is also possible in case of such a non-optimum PRF. For this, an innovative reconstruction algorithm is derived, which enables a recovery of the unambiguous Doppler spectrum also in case of a non-uniform sampling of the synthetic aperture. This algorithm will also have a great potential for multistatic satellite constellations as well as the dual receive antennas in Radarsat II and TerraSAR-X.


    Access

    Download


    Export, share and cite



    Title :

    SAR Signal Reconstruction from Non-Uniform Displaced Phase Centre Sampling


    Contributors:

    Conference:

    2004 ; Anchorage, USA



    Publication date :

    2004


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Unambiguous SAR Signal Reconstruction from Nonuniform Displaced Phase Center Sampling

    Krieger, Gerhard / Gebert, Nicolas / Moreira, Alberto | German Aerospace Center (DLR) | 2004

    Free access

    Digital Beamforming and Non-Uniform Displaced Phase Centre Sampling in Bi- and Multistatic SAR

    Krieger, Gerhard / Gebert, Nicolas / Moreira, Alberto | German Aerospace Center (DLR) | 2004

    Free access



    DISPLACED HAPTIC FEEDBACK

    YASUDA HIROSHI / KUEHNER MANUEL LUDWIG | European Patent Office | 2023

    Free access