Subsurface imaging of buried objects from FDTD modeled scattered field
Subsurface imaging of buried objects from FDTD modeled scattered field
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DOI：
10.1109/iccea.2004.1459406
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发表时间：
2004-11
期刊：
影响因子：
--
通讯作者：
Wentai Lei;Liye Liu;Chunlin Huang;Yi Su
中科院分区：
文献类型：
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作者：
Wentai Lei;Liye Liu;Chunlin Huang;Yi Su
提出了探地雷达（GPR）时域有限差分（FDTD）仿真方法和一种改进的反投影（BP）成像算法。由于探地雷达系统中的元件非常接近，因此不能通过单独考虑其各个组件来容易地对该系统进行建模。采用广义完美匹配层（GPML）吸收边界条件（ABC）作为FDTD计算区域的边界条件。在探地雷达成像中，传统的BP算法受到气土界面和土壤导电性的限制。提出了一种改进的BP算法。使用HRGPR-01系统的数值模拟和测量，以说明GPMLABC技术的性能。还显示了成像结果。
The ground penetrating radar (GPR) finite-difference time-domain (FDTD) simulation method and an improved back projection (BP) imaging algorithm are presented. Because of the close proximity of the elements in the GPR system, the system cannot be easily modeled by considering its individual components separately. A generalized perfectly matched layer (GPML) absorbing boundary condition (ABC) is employed to terminate the FDTD computational domain. In GPR imaging, the traditional BP algorithm is restricted by the air-soil interface and the conductivity property of the soil. An improved BP algorithm is presented. Numerical simulations and measurements using the HRGPR-01 system are provided to illustrate the performance of the GPMLABC technique. The imaging result is also shown.