物探化探计算技术
物探化探計算技術
물탐화탐계산기술
COMPUTING TECHNIQUES FOR GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2010年
1期
6-12
,共7页
李静%曾昭发%黄玲%吴丰收
李靜%曾昭髮%黃玲%吳豐收
리정%증소발%황령%오봉수
探地雷达%FDTD%三维正演模拟%UPML吸收边界
探地雷達%FDTD%三維正縯模擬%UPML吸收邊界
탐지뢰체%FDTD%삼유정연모의%UPML흡수변계
ground penetrating radar (GPR)%FDTD%three-dimensional forward modeling%uniaxial perfectly matched layer(UPML)
应用时域有限差分进行探地雷达正演计算时,边界条件的吸收效果是提高雷达波响应模拟精度的
應用時域有限差分進行探地雷達正縯計算時,邊界條件的吸收效果是提高雷達波響應模擬精度的
응용시역유한차분진행탐지뢰체정연계산시,변계조건적흡수효과시제고뢰체파향응모의정도적
In the FDTD simulation for ground penetrating radar (GPR), the absorbing boundary condition is one of the key factors to improve simulation accuracy. We derived the three-dimensional anisotropic perfect matched UPML absorbing boundary formula for ground penetrating radar, and realized it in matlab code. The simulation results show that the absorbing effect and computational efficiency of UPML absorbing boundary is significantly better than Mur and PML absorbing boundary. Applying UPML boundary to three-dimensional finite difference time domain method can significantly improve the reliability and accuracy of GPR forward modeling.
