Reconstruction Techniques for Sparse Multistatic Linear Array Microwave Imaging
Sequentially-switched linear arrays are an enabling technology for a number of near-field microwave imaging applications. Electronically sequencing along the array axis followed by mechanical scanning along an orthogonal axis allows dense sampling of a two-dimensional aperture in near real-time. In this paper, a sparse multi-static array technique will be described along with associated Fourier-Transform-based and back-projection-based image reconstruction algorithms. Simulated and measured imaging results are presented that show the effectiveness of the sparse array technique along with the merits and weaknesses of each image reconstruction approach.
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- Conference: Passive and Active Millimeter-Wave Imaging XVII, May 5, 2014, Baltimore, Maryland. Proceedings of the SPIE, 9078:Paper No. 907801
- D Wikner and AR Luukanen; SPIE , Bellingham, WA, United States(US).
- Research Org:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
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- United States
- millimeter-wave imaging; microwave imaging; sparse arrays; concealed-weapon detection