基于主动时间反转的水下目标自适应聚焦研究  

Self-adaptive focusing of underwater target based on active time reversal

作　　者：荆海霞[1] 李洪义[1] 

机构地区：[1]西安外事学院,陕西西安710077

出　　处：《电子设计工程》2015年第24期12-15,共4页Electronic Design Engineering

基　　金：2012年民办高等教育专项资金资助(2013XKZ05)

摘　　要：时间反转技术作为一种可以克服传输信道的"多径效应",从而实现目标的自适应聚焦及定位的新技术,近年来被广泛地应用于无线通信、医学治疗、材料学、水声学等领域。本文将时间反转技术应用于水声学中,采用射线传播理论详细推导了主动时间反转的聚焦模型,并利用计算机完成了5 km处的仿真实验验证,进一步地在水库完成了3 km的试验验证。以上结果表明,利用主动时间反转技术可以使目标自适应地在源位置实现聚焦。As a new technology, which can overcome the muhipath effect of the transmission channel, time reversal （TR） technology has been widely used in wireless communication, medical treatment, materials science, underwater acoustics and etc. In this paper, time reversal technique is applied to underwater acoustics, and the self-adaptive focusing model of the active time reversal （ATR） is deduced detailedly by Ray Theory. Furthermore, the simulation experiment of 5km is completed by computer, and the test of 3km is done in the reservoir. These results show that the target can be focused adaptively in the source location by the active time reversal technique.

关 键 词：主动时间反转 聚焦 多径效应 水下 射线模型 

分 类 号：TN011.6[电子电信—物理电子学]