Publications [#66649] of Jeffrey L. Krolik

Papers Published

1. Liu, Dehong and Kang, Gang and Li, Ling and Chen, Ye and Vasudevan, Sathyanarayanan and Joines, William and Liu, Qing Huo and Krolik, Jeffrey and Carin, Lawrence, Electromagnetic time-reversal imaging of a target in a cluttered environment, IEEE Transactions on Antennas and Propagation, vol. 53 no. 9 (2005), pp. 3058 - 3066 [TAP.2005.854563]
   (last updated on 2007/04/16)

   Abstract:
   Electromagnetic time-reversal imaging is addressed for a target situated in a cluttered background. We first investigate the theory of electromagnetic time-reversal imaging, followed by an experimental demonstration. A transmitter-receiver antenna array is connected to a network analyzer and applied to transmit wideband waveforms for detecting a target within a cluttered environment. We assume the cluttered background is fixed, thus the target signature is extracted by observing changes manifested by the introduction of a target. A numerical algorithm is required for computation of the Green's function employed within the time-reversal imager, with this implemented here via ray tracing. Example time-reversal images of different cluttered backgrounds and different targets are presented using measured data, with comparisons to a traditional radar imaging technique. Results show that the time-reversal imagery yields good focusing at the target, significantly better than when the background is not accounted for. © 2005 IEEE.

   Keywords:
   Imaging techniques;Electromagnetic wave propagation;Transceivers;Antenna arrays;Electromagnetic wave scattering;Algorithms;Green's function;Radar imaging;