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- W2006114067 abstract "We present a method to generate three-dimensional (3D) inverse synthetic aperture radar (ISAR) images of a target at arbitrary aspect angles using the shooting and bouncing ray (SBR) method. We have derived a 3D-image-domain ray-tube integration formula based on the SBR technique. The imaging formula is in a form of convolution, then a nonuniform fast Fourier transform (NUFFT) is induced to achieve the convolution, which can be used to generate 3D ISAR images rapidly. Compared to the conventional algorithm where the ISAR images are obtained by inverse Fourier transforming the computed scattered fields over a range of frequencies and a range of aspect angles, the new formula needs only one-time ray tracing and physical optics (PO) integration over a small angle span. Hence the computational time is decreased tremendously. The ISAR images of a missile target and an armored car for several aspect angles are presented to demonstrate the efficiency and accuracy of the proposed method." @default.
- W2006114067 created "2016-06-24" @default.
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- W2006114067 date "2012-05-01" @default.
- W2006114067 modified "2023-10-10" @default.
- W2006114067 title "Fast 3D-ISAR Image Simulation of Targets at Arbitrary Aspect Angles Through Nonuniform Fast Fourier Transform (NUFFT)" @default.
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- W2006114067 doi "https://doi.org/10.1109/tap.2012.2189717" @default.
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