Two-Component Scattering Decomposition Technique for Walk-Through Security Scanners Using a Copolarized-MIMO Array
Root K, Ullmann I, Vossiek M (2024)
Publication Type: Conference contribution
Publication year: 2024
Publisher: Institute of Electrical and Electronics Engineers Inc.
Pages Range: 312-315
Conference Proceedings Title: 2024 21st European Radar Conference, EuRAD 2024
Event location: Paris
ISBN: 9782874870798
DOI: 10.23919/EuRAD61604.2024.10734876
Abstract
The widespread deployment of walk-through security scanners necessitates high reliability and a minimal false-alarm rate. This paper proposes a novel approach to improve existing systems by distinguishing between two scattering processes encountered during security checks: reflections from skin versus reflections from concealed objects. As skin shows specular reflection behavior, whereas objects tend to reflect diffuse, reconstruction results of the same scene with different array geometries show different imaging results. Therefore, we separate the imaging array into multiple partial arrays that exploit this scattering behavior beneficially. After obtaining the different reconstruction images, we propose an image processing technique that allows to obtain information about object reflections in the scene. This technique uses existing state-of-the-art walk-through scanners without the need for hardware modifications and hence, can easily be integrated. We validate the efficiency of this approach through realistic measurements involving human subjects and various threat objects. Our results demonstrate the capability to detect these objects, offering promise to improve existing systems.
Authors with CRIS profile
Konstantin Root
Lehrstuhl für Hochfrequenztechnik (LHFT)
Ingrid Ullmann
Lehrstuhl für Hochfrequenztechnik (LHFT)
Martin Vossiek
Lehrstuhl für Hochfrequenztechnik (LHFT)
Additional Organisation(s)
How to cite
APA:
Root, K., Ullmann, I., & Vossiek, M. (2024). Two-Component Scattering Decomposition Technique for Walk-Through Security Scanners Using a Copolarized-MIMO Array. In 2024 21st European Radar Conference, EuRAD 2024 (pp. 312-315). Paris, FR: Institute of Electrical and Electronics Engineers Inc..
MLA:
Root, Konstantin, Ingrid Ullmann, and Martin Vossiek. "Two-Component Scattering Decomposition Technique for Walk-Through Security Scanners Using a Copolarized-MIMO Array." Proceedings of the 21st European Radar Conference, EuRAD 2024, Paris Institute of Electrical and Electronics Engineers Inc., 2024. 312-315.
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