Efficient Image Reconstruction Method for a Millimeter-wave Shoe Scanner

Conference · Thu Apr 23 04:00:00 EDT 2020

DOI:https://doi.org/10.1117/12.2560368· OSTI ID:1617192

Sheen, David M. ^[1]; Clark, Richard T. ^[1]; Tedeschi, Jonathan R. ^[1]; McCall, Jonathon D. ^[1]; Hartman, Trenton S. ^[1]; Jones, Anthony M. ^[1]

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1. BATTELLE (PACIFIC NW LAB)

The Pacific Northwest National Laboratory (PNNL) has recently developed an active 3D microwave/millimeter-wave shoe scanner. This system is designed to detect threats concealed within the soles of common footwear. The system operates over the 10-40 GHz frequency range for excellent penetration of common materials. The system presents several challenges for efficient image reconstruction, including the thick dielectric window, multi-row linear arrays, and focusing close to the antenna elements. In this paper, an efficient back-projection reconstruction algorithm is presented that overcomes these challenges. Experimental imaging results are shown that demonstrate high-resolution imaging performance for this new scanner.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1617192
• Report Number(s): PNNL-SA-152509
• Country of Publication: United States
• Language: English