Current Flow-Induced Effect on Time-Reversal Communication

Current Flow-Induced Effect on Time-Reversal Communication
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电流对时间反转通信的影响

DOI:
10.1143/jjap.48.07gl02
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发表时间:
2009
影响因子:
1.5
通讯作者:
T. Hattori
T. Hattori
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
T. Shimura;H. Ochi;Yoshitaka Watanabe;T. Hattori

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我们以前在模拟和海上实验的基础上研究了长水平时间反转(相位共轭)通信。在这些以前的实验中,实现了10到100公里范围内的时间反转通信。在时间反转通信的实现中,保持媒介的互易性是前提。因此,有必要研究非互易扰动的影响,如源-接收器的运动或电流。在前人的工作中,研究了声源接收器运动的影响。本文在仿真的基础上,对电流的影响进行了研究。结果表明,水流的影响主要表现为定相偏差。我们在以前的工作中提出的时间反转和自适应均衡相结合的方法,可以补偿电流诱导效应,并在电流速度不是很高的情况下实现通信。
We previously studied long horizontal time-reversal (phase-conjugate) communication based on simulations and at-sea experiments. In these previous experiments, time-reversal communication at ranges of 10 to 100 km was achieved. In the implementation of time-reversal communication, it is prerequisite that the reciprocity of the medium is retained. Therefore, it is necessary to investigate the effects of nonreciprocal disturbances, such as movements of source-receiver or current flow. The effect of the movement of source receiver was studied in previous works. In this paper, the effect of current flow is studied on the basis of simulations. The results show that the effects of current flow appear mainly as stationary phase deviation. The method of combining time reversal and adaptive equalization, which we have proposed in our previous works, can compensate the current flow-induced effect and enable communication if the current flow speed is not so high.
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