Derivation of and Discussions on the Forward-Looking Radar Imaging Point Spread Function

Report No. ARL-TN-0624
Authors: DaHan Liao
Date/Pages: August 2014; 16 pages
Abstract: Efficient closed-form expressions for the point spread function are established for a forward-looking, ultra-wideband, near-field imaging algorithm that exploits a coherent frequency domain technique for focusing. The imaging performance (resolution, sidelobe level, ambiguous artifact level, etc.) is analyzed for on-surface and subsurface targets and compared for both single- and multi-aperture sensing geometries. The closed-form formulations and observations put forth herein are applicable for a standoff sensing system employing a two-end-transmitter bistatic configuration; the theoretical results overall, however, can be readily extended for other standard sensing scenarios, including monostatic and fully multistatic ones.
Distribution: Approved for public release
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Last Update / Reviewed: August 1, 2014