An important class of digital processing algorithms for synthetic aperture radar (SAR) is based on the computational efficiency of the FFT. Since the FFT algorithm simultaneously processes all targets within a single azimuthal resolution cell, it cannot be perfectly focus on all targets. An analysis is presented of phase mismatch for targets displaced from the reference position. The results provide a quantative evaluation of patch size limitations for spotlight mode SARs that achieve high speed operation by means of rectangular format FFT algorithms.
|Original language||English (US)|
|Number of pages||5|
|State||Published - Jan 1 1979|
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