An azimuth ambiguity suppression method for a spaceborne SAR in spatially non-uniform sampling relates to the technical field of radars. The method includes the following steps: step 1: compensating for a phase difference between the channels according to the locations of transmitting and receiving stations for channel echoes; step 2: calculating an equivalent azimuth sampling location of each channel at the moment of each pulse transmission; step 3: sorting the equivalent azimuth sampling locations of all channels and their corresponding echoes after the phase difference between the channels is compensated in ascending order; and step 4: calculating reconstructed echoes from the sorted equivalent azimuth sampling locations and corresponding echoes after the phase difference between the channels is compensated, by using an adaptive weight-conjugate gradient-Toeplitz matrix (ACT) algorithm. According to the present disclosure, a relative distance between the channels is not required to remain unchanged, which greatly expands the scope of application of azimuth multi-channel SAR echo reconstruction.


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    Titel :

    Azimuth ambiguity suppression method for spaceborne SAR in spatially non-uniform sampling


    Beteiligte:
    WANG YU (Autor:in) / XUE ZHIYUAN (Autor:in) / LI LIANG (Autor:in) / CAI YONGHUA (Autor:in) / LI BO (Autor:in) / NAN YIJIANG (Autor:in) / LU PINGPING (Autor:in)

    Erscheinungsdatum :

    22.04.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS / G01S RADIO DIRECTION-FINDING , Funkpeilung



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