中文摘要：

方向图可重构天线可以选择信号传播的空间信道，而时间反演技术可以回溯信号的传播路径（空问聚焦特点）。因此，文中将时间反演技术和方向图可重构天线技术结合可以产生多个具有不同截获位置的信号。将信息分别调制到这些信号上，可以改善信息传播的安全性。文中，利用MATLAB所构建的电磁仿真模型模拟室内空间环境，对这一方法进行了仿真研究。

英文摘要：

It has been known that the pattern reconfigurable antenna can restrict signal path by choosing various radia- tion pattems. Furthermore, the Time Reversal technology can make the signal propagation in the given channels. In this pa- per, aforementioned technologies will be combined together to generate several signals with different intercept locations. When the information is modulated into these signals. It is hard to detected the information due to various intercept locations of the signal. In this investigation, MATLAB is used to build the electromagnetic simulation model to simulate the indoor en- vironment. Then, the proposed method will be investigated in the simulated indoor environment. The relevant results are present and discussed.