The existence of walls surrounding targets leads to multi-path return at the radar receiver, which provides additional information about the target, and thus can be exploited to strengthen the quality of through-wall radar imaging (TWRI). Based on this, a multi-path exploitation method is proposed to identify the location of the multi-path ghost. An algorithm that combining the modified Green’s function with back projection algorithm is presented to associate and map the multi-path ghosts to the location of real targets. The theoretical analysis is verified according to the simulation results obtained using gprMAX software as well as practical radar measured data, and our proposed method is shown to outperform that in conventional multi-path exploitation method (Setlur et al., IEEE Trans. Geosci. Remote Sens. 49:4021–4034, 2011).

围绕目标的墙壁的存在会导致雷达接收器返回多路径，从而提供有关目标的更多信息，因此可被利用来增强穿墙雷达成像（TWRI）的质量。基于此，提出了一种多路径利用方法来识别多路径幻影的位置。提出了一种将修正格林函数与反投影算法相结合的算法，以将多路径幻影关联并映射到真实目标的位置。根据使用gprMAX软件获得的仿真结果以及实际的雷达测量数据验证了理论分析，并且我们提出的方法显示出优于传统的多路径开发方法（Setlur等人，IEEE Trans。Geosci。Remote Sens。49：4021-4034，2011）。