9 June 1994 Spotlight-mode synthetic aperture radar without Fourier transforms
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Abstract
The spotlight mode SAR (SPSAR) image reconstruction problem may be solved using a backprojection algorithm in the spatial domain while the radar return signals being recorded. The resulting SPSAR algorithm, studied by Desai and Jenkins, permits parallelization of the image reconstruction, and obviates a costly Fourier-domain resampling step. We show that by using a radar signal of a specially designed form with backprojection, the reconstruction becomes extremely simple, eliminating the need for Fourier processing of the return signals, by incorporating a derivative of a Hilbert transform into the emitted signal. We show some simulation results using this new method. We also briefly discuss an algorithm for reconstruction of a function residing on a hemisphere from its radar returns without geometric approximation or distortion.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jordan Mann, Jordan Mann, Robert A. Hummel, Robert A. Hummel, "Spotlight-mode synthetic aperture radar without Fourier transforms", Proc. SPIE 2230, Algorithms for Synthetic Aperture Radar Imagery, (9 June 1994); doi: 10.1117/12.177167; https://doi.org/10.1117/12.177167
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