A New Method for Obtaining Radar Images of Concealed Objects in Microwave Personnel Screening Systems

• Published in: IEEE transactions on microwave theory and techniques Vol. 69; no. 1; pp. 357 - 364
• Main Authors: Zhuravlev, Andrey, Razevig, Vladimir, Chizh, Margarita, Dong, Ge, Hu, Boxiong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Apertures; Body scanner; Calibration; Channels; concealed object detection; Electromagnetic radiation; inverse synthetic aperture radar (ISAR) imaging; Laser radar; Mannequins; Microwave imaging; Personnel; personnel screening; Radar antennas; Radar imaging; Screening; sensor data fusion; subsurface radar; synthetic aperture radar; Synthetic apertures; Transport buildings, stations and terminals; transport security; Wave diffraction
• ISSN: 0018-9480; 1557-9670
• DOI: 10.1109/TMTT.2020.3023443

In modern microwave personnel screening systems, a 2-D synthetic aperture is used to obtain a radar image with resolution limited by the diffraction of electromagnetic waves. Therefore, the antenna system of the screening system has large dimensions, a large number of switched channels, and a high cost, which limits a wider use of these systems, for example, at ground transport hubs or administrative buildings. In this article, we consider a different method of forming synthetic aperture, in which it is formed due to the relative movement of a subject near a stationary antenna system. Using the described experimental setup and imitation experiment with a mannequin, it was shown that the proposed method can significantly reduce the dimensions of a prospective screening system and the number of channels in the antenna system and at the same time obtain detailed radar images of hidden objects.