On the use of compressed sensing techniques for improving multistatic millimeter-wave portal-based personnel screening

Abstract

This work develops compressed sensing techniques to improve the performance of an active three dimensional (3D) millimeter wave imaging system for personnel security screening. The system is able to produce a high-resolution 3D reconstruction of the whole human body surface and reveal concealed objects under clothing. Innovative multistatic millimeter wave radar designs and algorithms, which have been previously validated, are combined to improve the reconstruction results over previous approaches. Compressed Sensing techniques are used to drastically reduce the number of sensors, thus simplifying the system design and fabrication. Representative simulation results showing good performance of the proposed system are provided and supported by several sample measurements ; This work was supported in part by CenSSIS, the Gordon Center for Subsurface Sensing and Imaging Systems NSF ERC Program (Award number EEC-9986821); by the Science and Technology Directorate, U.S. Department of Homeland Security under the Award Number 2008-ST-061-ED0001; by the Xunta de Galicia under Plan I2C (2011-2015); by the European Union - FP7 under the project 600849 (INSIDDE); and in part by the Ministerio de Economía y Competitividad of Spain/FEDER under projects CONSOLIDER-INGENIO CSD2008-00068 (TERASENSE), and TEC2011-24492/TEC (iSCAT)