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International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 392308, 10 pages
http://dx.doi.org/10.1155/2012/392308
Research Article

An Automatic Framework Using Space-Time Processing and TR-MUSIC for Subsurface and Through-Wall Multitarget Imaging

Department of Electronic Information Engineering, Nanchang University, Jiangxi, Nanchang 330031, China

Received 3 February 2012; Revised 11 June 2012; Accepted 18 July 2012

Academic Editor: Weng Cho Chew

Copyright © 2012 Si-hao Tan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present an automatic framework combined space-time signal processing with Time Reversal electromagnetic (EM) inversion for subsurface and through-wall multitarget imaging using electromagnetic waves. This framework is composed of a frequency-wavenumber (FK) filter to suppress direct wave and medium bounce, a FK migration algorithm to automatically estimate the number of targets and identify target regions, which can be used to reduce the computational complexity of the following imaging algorithm, and a EM inversion algorithm using Time Reversal Multiple Signal Classification (TR-MUSIC) to reconstruct hidden objects. The feasibility of the framework is demonstrated with simulated data generated by GPRMAX.