| 时域有限差分法在地质雷达二维正演模拟中的应用 |
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| 引用本文： | 戴前伟,冯德山,王启龙,何继善. 时域有限差分法在地质雷达二维正演模拟中的应用[J]. 地球物理学进展, 2004, 19(4): 898-902 |
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| 作者姓名： | 戴前伟 冯德山 王启龙 何继善 |
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| 作者单位： | 中南大学地球物理勘察新技术研究所,长沙,410083;长江水利委员会勘测规划设计研究院,武汉,430010 |
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| 基金项目： | 国家自然科学基金重大项目(50099620-03-02)资助． |
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| 摘 要： | 本文从地质雷达正演原理着手，分析了差分格式中半空间步长与半时间步长的实现方法，同时通过分析数值频散的产生，进而推导出了理想频散关系和超吸收边界条件．最后文中还对比了有无边界条件的雷达正演模拟效果和精度．
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| 关 键 词： | 地质雷达 时域有限差分法 正演模拟 |
| 文章编号： | 1004-2903(2004)04-0898-05 |
| 修稿时间： | 2004-09-20 |
The apply of finite difference time domain method in the Ground Penetrating Radar (GPR) two-dimension forward simulate |
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| DAI Qian-wei FENG De-shan WANG Qi-long HE Ji-shan. The apply of finite difference time domain method in the Ground Penetrating Radar (GPR) two-dimension forward simulate[J]. Progress in Geophysics, 2004, 19(4): 898-902 |
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| Authors: | DAI Qian-wei FENG De-shan WANG Qi-long HE Ji-shan |
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| Affiliation: | DAI Qian-wei~1 FENG De-shan~1 WANG Qi-long~2 HE Ji-shan~11.Institute of Geophysical Technique Exploration,Central South University,Chang sha 410083,China,2.Chang Jiang Institute of Survey,Planning,Design and Research,Chang Jiang Water Resources commission,Wuhan 430010,China |
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| Abstract: | Based upon the forward simulation principle of ground penetrating radar,this article analyzes the realizationmethod of the half grid spacing and the half time increment in difference format,at the same time analyzed the produceof the numerical frequency dispersion,then deduced the ideal frequency dispersion relationship and the super absorb-ing boundary condition.Finally,this article compares radar forward simulate effect and precision between having andwithout boundary condition. |
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| Keywords: | ground penetrating radar finite difference time domain method forward simulate |
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