主动探测型时间反转电磁波聚焦

doi:10.3969/j.issn.1001-2400.2015.02.020

J4 ›› 2015, Vol. 42 ›› Issue (2): 122-126+198.doi: 10.3969/j.issn.1001-2400.2015.02.020

主动探测型时间反转电磁波聚焦

付永庆;刘伟

(哈尔滨工程大学信息与通信工程学院，黑龙江哈尔滨 150001)

收稿日期:2013-12-10 修回日期:2014-01-09 出版日期:2015-04-20 发布日期:2015-04-14
作者简介:付永庆(1956-)，男，教授，E-mail：fuyongqing@hrbeu.edu.cn．
基金资助:
国家自然科学基金资助项目(61172038)

Electromagnetic wave focusing of active detected time reversal

FU Yongqing;LIU Wei

(College of Information and Communication Engineering, Harbin Engineering Univ., Harbin 150001, China)

Received:2013-12-10 Revised:2014-01-09 Online:2015-04-20 Published:2015-04-14

摘要/Abstract

摘要： 为扩展时间反转理论在电磁领域的应用，提出了一种基于主动探测的时间反转电磁波聚焦方法．该方法是通过时间反转目标的反射波并在目标搜索域内进行能量搜索来实现重聚焦的．首先，收发合置传感器阵列的一个天线阵元向目标区域发射电磁波信号，该电磁波信号遇到目标后反射，反射后的电磁波被各天线阵元接收并记录．当所有阵元全部完成上述发射和接收过程后，将每个阵元中得到的所有信号相加，并进行时间反转．然后，将各阵元时间反转后的信号虚拟重发到目标域中，则信号能量会在目标处实现重聚焦．根据电磁波的传播特性，给出了主动探测型时间反转聚焦的原理及方法．最后，通过仿真实验验证了主动探测型时间反转可以有效实现电磁波重聚焦的特性．

关键词: 时间反转, 主动探测, 电磁波, 聚焦, 反射

Abstract: In order to extend the application area of time reversal theory in the electromagnetic field, a method for electromagnetic wave focusing based on the active detected time reversal theory is proposed. This method accomplishes the refocusing of signal energy by time reversing the reflected waves of targets and searching signal energy in the search area. Firstly, an antenna element in the transducer array emits electromagnetic waves to the target area. And this signal is reflected by targets, and every antenna element receives and records the reflected signals. When the process of emitting and receiving is finished by all antennas, all signals received by an antenna are added and time reversed. Then, retransmitting the time-reversed signals of every antenna to the target area virtually, and the signal energy is refocused in the direction of targets. Based on the propagation characteristics of electromagnetic waves the fundamentals of and the algorithm for active detected time reversal refocusing are given in this paper. Finally, the characteristic that the proposed method can accomplish electromagnetic wave refocusing effectively is validated via simulation.

Key words: time reversal, active detection, electromagnetic waves, focusing, reflection

付永庆;刘伟 . 主动探测型时间反转电磁波聚焦 [J]. J4, 2015, 42(2): 122-126+198.

FU Yongqing;LIU Wei . Electromagnetic wave focusing of active detected time reversal [J]. J4, 2015, 42(2): 122-126+198.

参考文献

［1］ Fink M, Prada C, Wu F, et al. Self Focusing in Inhomogeneous Media with Time Reversal Acoustic Mirrors ［C］//IEEE Ultrasonics Symposium Proceedings: 2. Piscataway: IEEE, 1989: 681-686. ［2］ Fink M, Cassereau D, Derode A, et al. Time Reversed-acoustics ［J］. Reports on Progress in Physics, 2000, 63(12): 1933-1995. ［3］ Song H C, Kim S, Hodgkiss W S. Environmenaly Adaptive Reverberation Nulling Using a Time Reversal Mirror ［J］. Journal of the Acoustical Society of America, 2004, 116(2): 762-768. ［4］夏云龙, 付永庆. 时间反转算子特征值分解算法［J］. 哈尔滨工程大学学报, 2008, 29(12): 1340-1343. Xia Yunlong, Fu Yongqing. Eigenvalue Decomposition Algorithm for Time Reversal Operators ［J］. Jousnal of Harbin Engineering University, 2008, 29(12): 1340-1343. ［5］严夏军. Lamb波时间反转无基准损伤监测技术［D］. 南京: 南京邮电大学, 2013. ［6］ Thomas J L, Fink M. Self Focusing on Extended Objects with Time Reversal Mirror Application to Lithotripsy ［C］//IEEE Ultrasonics Symposium Proceedings: 3. Piscataway: IEEE, 1994: 1809-1814. ［7］周跃海, 李芳兰, 陈楷, 等. 低信噪比条件下时间反转扩频水声通信研究［J］. 电子与信息学报, 2012, 34(7): 1685-1689. Zhou Yuehai, Li Fanglan, Chen Kai, et al. Research of Time Reversal Spread Spectrum Underwater Acoustic Communication under Low SNR ［J］. Journal of Electronics ＆ Information Technology, 2012, 34(7): 1685-1689. ［8］季彦呈, 高洋, 葛建华. 无线网络中的一种异步差分空时协作方案［J］. 西安电子科技大学学报, 2009, 36(1): 74-79. Ji Yancheng, Gao Yang, Ge Jianhua. Asynchronous Differential Space-time Cooperative Communications in Wireless Networks ［J］. Journal of Xidian University, 2009, 36(1): 74-79. ［9］ Khan W N, Zubair M, Wyne S, et al. Performance Evaluation of Time-reversal on Measured 60GHz Wireless Channels ［J］. Wireless Personal Communications, 2013, 71(1): 701-707. ［10］贾云东. 基于时间反转的单水听器被动定位技术研究［J］. 水雷战与舰船防护, 2012, 21(1): 23-37. Jia Yundong. Research on TRM Passive Locatization Technology with Signal Acoustic Vector Sensor ［J］. Mine Wareare ＆ Ship Self-defence, 2012, 21(1): 23-37. ［11］ Ishimaru A, Zhang C, Stoneback M, et al. Time-reversal Imaging of Objects Near Rough Surfaces Based on Surface Flattening Transform ［J］. Waves in Random and Complex Media, 2012, 23(3): 306-317. ［12］ Liu X F, Wang B Z, Li J L. Transmitting-mode Time Reversal Imaging Using MUSIC Algorithm for Surveillance in Wireless Sensor Network ［J］. IEEE Transactions on Antennas and Propagation, 2012, 60(1): 220-230. ［13］王家礼, 朱满座, 路宏敏. 电磁场与电磁波［M］. 3版. 西安: 西安电子科技大学出版社, 2009: 133-155. ［14］ Dorme C, Fink M. Focusing in Transmit-receive Mode through Inhomogeneous Media: the Time Reversal Matched Filter Approach ［J］. Journal of the Acoustical Society of America, 1995, 98(2): 1155-1162.

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主动探测型时间反转电磁波聚焦

Electromagnetic wave focusing of active detected time reversal

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