DocumentCode :
2695072
Title :
A novel time reversal method for target detection in cluttered media
Author :
Zhu, Jian-Gang ; Jiang, Yi ; Stancil, Daniel D. ; Moura, José
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fYear :
2005
fDate :
3-8 July 2005
Firstpage :
135
Abstract :
A cluttered environment with highly scattering objects significantly enhances the difficulty for detecting targets using electromagnetic waves. Time reversal methods have been developed in acoustic wave propagation. It has been shown that the super resolution focusing effect in acoustic wave propagation can also be achieved electromagnetic wave propagation. We present a novel time reversal method that nullifies the scattering objects to allow automatic focusing of the propagated electromagnetic wave on a target that is to be detected. Numerical simulations using the FDTD method have been carried out. The results show that the method significantly enhances the dynamic range of target detection in a highly scattering environment and could substantially increase target detectability.
Keywords :
clutter; electromagnetic wave propagation; electromagnetic wave scattering; focusing; object detection; signal processing; FDTD method; acoustic wave propagation; cluttered media; electromagnetic waves; scattering objects; super resolution focusing; target detection; time reversal method; Acoustic propagation; Acoustic scattering; Acoustic signal detection; Acoustic waves; Dynamic range; Electromagnetic propagation; Electromagnetic scattering; Finite difference methods; Numerical simulation; Object detection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
Type :
conf
DOI :
10.1109/APS.2005.1552760
Filename :
1552760
Link To Document :
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