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《Progress In Geophysics》 2004-04
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The apply of finite difference time domain method in the Ground Penetrating Radar (GPR) two-dimension forward simulate

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  
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.
【Fund】: 国家自然科学基金重大项目(50099620-03-02)资助.
【CateGory Index】: P631.33
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