摘要
针对室内复杂环境下移动通信目标定位,介绍了一种基于TR(time reversal)技术的定位方法。TR定位技术可以有效地克服信号在室内复杂环境信道中产生的多径、时延等现象,在接收端将接收信号进行存储和逆时序后重发回传播媒质中,则这些信号将在原发射位置处产生会聚,可以产生很好的室内定位结果。对其在室内复杂环境下对主动源目标的探测与定位做了理论与仿真分析,仿真实例证明了所述方法的正确性。
Aiming at the position mobile communications terminal in indoor complex environments, this paper introduces a method based on the time reversal （TR） technology . TR technology can effectively overcome the phenomenon of serious multipath, time delay in the complex communication channel. In our TR based position method, the received signals are stored and re-sent into the propagation medium with a reversed time order, and then these signals will produce convergence in the original launch location. The convergence procedure fully uses the complex channel information, so this method can produce better position for indoor active communications terminal. This paper has done some theory and simulation analysis for the detection and location of the active source in indoor complex environments. Some simulative examples validate the proposed method.
出处
《数字通信》
2013年第1期34-39,共6页
Digital Communications and Networks
关键词
TR
室内定位
多径效应
主动源中国
TR, indoor location, multipath effect, active source
