Accurate boundary extraction and dielectric constant estimation method for UWB internal imaging radar
Accurate boundary extraction and dielectric constant estimation method for UWB internal imaging radar
复制标题
UWB内成像雷达精确边界提取及介电常数估计方法
DOI：
10.1109/ursi-emts.2016.7571322
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
S. Kidera
中科院分区：
文献类型：
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作者：
S. Kidera
微波超宽带（UWB）雷达系统具有高距离分辨率和穿透介电物体的能力等诸多优点。超宽带雷达对介质物体进行内部成像是一种很有前途的无损检测道路和桥梁老化的方法，也是医学诊断或人体生命体征检测的一种无创技术。我们已经开发了一种新颖的距离点迁移方法，可以对具有连续边界形状的目标实现精确的高分辨率成像。本文介绍了一种基于RPM或包络的方法提取双层介质目标的新方法，该方法同时确定了周围介质的介电常数。数值模拟和实验结果验证了该方法的有效性。
Microwave ultra-wideband (UWB) radar systems have numerous advantages for high range resolution and an ability to penetrate dielectric objects. Internal imaging of dielectric objects by UWB radar is a promising nondestructive method of testing aging roads and bridges and a noninvasive technique for medical diagnoses or human vital sign detection. We have already developed an original method called as range points migration (RPM), which achieves accurate and high-resolution imaging for target with continuous boundary shape. In this paper, we introduce the novel method for extracting double-layered dielectric object by using RPM or Envelope based approaches, where a dielectric constant of surrounding medium is simultaneously determined. The results obtained from the numerical simulation and experiment assuming concrete objects, demonstrate the effectiveness of our proposed method.