| 路基下目标体的路面雷达电磁波模拟与分析 |
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| 引用本文： | 刘俊,蔡迎春,王复明.路基下目标体的路面雷达电磁波模拟与分析[J].大连海事大学学报(自然科学版),2009,35(1). |
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| 作者姓名： | 刘俊 蔡迎春 王复明 |
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| 作者单位： | 刘俊,LIU Jun(大连理工大学,土木水利学院,辽宁,大连,116024);蔡迎春,CAI Ying-chun(大连理工大学,土木水利学院,辽宁,大连,116024;郑州大学,水利与环境学院,郑州,450002);王复明,WANG Fu-ming(郑州大学,水利与环境学院,郑州,450002)
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| 基金项目： | 国家杰出青年科学基金，河南省杰出科研人才创新工程项目 |
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| 摘 要： | 为准确分析路基下不同目标体的路面雷达电磁波回波特性,采用二维时域有限差分方法(2D-FDTD),对路基金属及空洞目标体的路面雷达电磁波进行了正演模拟,分析了路基媒质的介电常数、目标体的埋深、形状等对路面雷达反射波的影响.在目标体周围路基介质介电常数为非均匀分布情况下,对该实验正演模拟结果与实测结果进行对比.结果表明,模拟结果与实测结果吻合较好,验证了该正演模拟方法的正确性.
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| 关 键 词： | 路基下目标体 路面雷达 电磁波 二维时域有限差分法(2D-FDTD) 正演模拟 非均匀性介电常数 |
Simulation and analysis on ground penetrating radar electromagnetic waves reflected by subgrade targets |
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| LIU Jun,CAI Ying-chun,WANG Fu-ming.Simulation and analysis on ground penetrating radar electromagnetic waves reflected by subgrade targets[J].Journal of Dalian Maritime University,2009,35(1). |
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| Authors: | LIU Jun CAI Ying-chun WANG Fu-ming |
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| Institution: | LIU Jun1,CAI Ying-chun1,2,WANG Fu-ming2 (1.College of Civil , Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China,2.College of Environment , Hydraulic Engineering,Zhengzhou University,Zhengzhou 450002,China) |
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| Abstract: | The electromagnetic wave of the air-coupled antenna ground penetrating radar(GPR) which propagates in subgrade with typical metal and void targets was forward simulated by using the two-dimension finite difference time domain(2D-FDTD)to analyze accurately the echo characteristic of GPR for pavement with typical different targets.The influence of dielectric constant of the subgrade medium,the burial depth and the shape of the subgrade targets on reflection of GPR were studied.Experimental results match well ... |
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| Keywords: | subgrade targets ground penetrating radar for pavement electromagnetic wave two-dimension finite difference time domain(2D-FDTD) forward simulation dielectric constant inhomogeneity |
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