Targets Detection Based on Time Reversal Operator with Uniform Circular Array

Abstract:

In order to detect targets accurately in electromagnetic environment, a decomposition of time reversal operator method for detecting targets with uniform circular array (UCA) is proposed in this paper. In this method, the time reversal operator in UCA is obtained by the transmission functions of targets and antenna array. And then, the eigenvector decomposition of time reversal operator is performed. According to the eigenvectors and the transmission functions of targets and scanning points in the given targets area, the focusing values of all scanning points are calculated, and the direction of scanning points whose focusing values are far greater than others are the direction of targets. Finally, the simulations verify the effectiveness of the proposed method.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 1855-1858
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.1855
• Online since: August 2014
• Authors: Wei Liu*, Yong Qing Fu, Da Xu
• Keywords: Targets Detection, Time Reversal Operator, Uniform Circular Array

References

[1] Fink M, Prada C, Wu F, Cassereau D. Self focusing in inhomogeneous media with time reversal acoustic mirrors. IEEE Ultrasonics Symposium Proceedings [C]. Montreal: IEEE, 1989. 681-686.

DOI: 10.1109/ultsym.1989.67072

[2] Thomas J L, Fink M. Self focusing on extended objects with time reversal mirror, application to lithotripsy. IEEE Ultrasonics Symposium Proceedings [C]. Cannes: IEEE, 1994. 1809-1814.

DOI: 10.1109/ultsym.1994.401942

[3] Chakroun N, Fink M, Wu F. Time reversal processing in ultrasonic nondestructive testing [J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1995 42 (6) 1087-1098.

DOI: 10.1109/58.476552

[4] Zhuang Li, Gang Qiao, Jianpei Wang, Zongxin Sun. Short baseline positioning based on virtual time reversal mirror [J]. Applied Acoustics, 2012 31(4) 256-261.

[5] Yuehai Zhou, Fanglan Li, Kai Chen, Feng Tong. Research of time reversal spread spectrum underwater acoustic communication under low SNR [J]. Journal of Electronics & Information Technology, 2012 34(7) 1685-1689.

DOI: 10.3724/sp.j.1146.2011.01410

[6] Choi H, Ogawa Y T, Ohgane T. Time-reversal MUSIC imaging with time-domain gating technique [J]. IEICE Transactions on Communications. 2012 E95-B (7) 2377-2385.

DOI: 10.1587/transcom.e95.b.2377

[7] Xiaofei Liu, Bingzhou Wang, J L Li. Transmitting- mode time reversal imaging using MUSIC algorithm for surveillance in wireless sensor network [J]. IEEE Transactions on Antennas and.

DOI: 10.1109/tap.2011.2167903