周辉林, 何永芳, 段荣行, 王玉皞. 基于穿墙雷达的虚拟多视角成像[J]. 电波科学学报, 2015, 30(2): 333-338. doi: 10.13443/j.cjors.2014051504
      引用本文: 周辉林, 何永芳, 段荣行, 王玉皞. 基于穿墙雷达的虚拟多视角成像[J]. 电波科学学报, 2015, 30(2): 333-338. doi: 10.13443/j.cjors.2014051504
      ZHOU Huilin, HE Yongfang, DUAN Rongxing, WANG Yuhao. Virtual multi-views method for through wall radar imaging[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2015, 30(2): 333-338. doi: 10.13443/j.cjors.2014051504
      Citation: ZHOU Huilin, HE Yongfang, DUAN Rongxing, WANG Yuhao. Virtual multi-views method for through wall radar imaging[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2015, 30(2): 333-338. doi: 10.13443/j.cjors.2014051504

      基于穿墙雷达的虚拟多视角成像

      Virtual multi-views method for through wall radar imaging

      • 摘要: 由于墙体及室内目标的存在,穿墙雷达回波信号中包含许多多径分量, 导致在成像后图像中存在许多幻影分量.在传统的穿墙雷达成像及预处理中, 将多径分量视为杂波和干扰分量, 并提出许多方法来抑制多径分量.基于多径分量提供了同一目标不同观测视角的优势, 提出了一种基于室内电波传播模型的多径利用方法.该方法在后向投影成像方法的基础上, 利用双圆解析表达式方法识别图像中幻影的位置信息, 将幻影与目标相关联, 并结合指数加权函数的方法, 实现目标的虚拟多视角成像,仿真实测结果验证了该方法的有效性.

         

        Abstract: Existence of targets inside buildings or rooms introduces multipath in the radar return, which results in false targets in the original beamformed image. In the traditional processing of through-wall radar scattered data, the multipath return was regarded as clutter and many methods were proposed for suppressing these interference. As each multipath return provides some additional information about the target, we develop a multipath exploitation technique based on the indoor radio propagation revised model and multiple-path scattering model. Based on the back propagation imaging algorithm, a method for localizing the focused multipath ghosts is provided, then we introduce the two-dimensional exponential weighting function to achieve the virtual multi-views image. Simulations and experimental data are used to validate the proposed algorithm.

         

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