PROJECT TITLE :
Expediting back-projection algorithm for circular SAR imaging
The provision of an expediting back-projection (EBP) algorithm for circular artificial aperture radar (CSAR) imaging is investigated. EBP works by dividing the full aperture into sub-apertures, and using a unified polar grid to come up with sub-pictures. On the idea of the correspondence between the wavenumber domain and also the part history domain, EBP combines all sub-aperture spectrums into a full-aperture one and reconstructs the CSAR image followed by a two-dimensional (2D) quick Fourier remodel. Without time-consuming 2D interpolation, EBP is capable of decreasing the loss of spectrum, while improving considerably the computational potency compared with direct BP.
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