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This letter presents an improved back-projection (BP) technique for far-field radar cross section (RCS) feature extraction from near-field measurement. The presented technique can synthesize a plane-wave response from a 2-D near-field planar scanner and obtain a 3-D scattering coefficient image. Due to the 3-D resolving power, it can spatially extract different parts of a complex object, or target’s...
An approach to determination of far-field radar cross section (RCS) of electrically large targets from near-field 3-D synthetic aperture radar (SAR) imaging with fixed transmitter is presented. Extrapolations of the transmitted wave and scattered wave are both conducted in a near field to far field transformation. The far-field RCS can be obtained as a function of direction and frequency. As validation,...
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