Three-Dimensional Borehole Radar Modeling

3차원 시추공 레이다 모델링

  • Published : 2000.02.01


Geo-radar survey which has the advantage of high-resolution and relatively fast survey has been widely used for engineering and environmental problems. Three-dimensional effects have to be considered in the interpretation of geo-radar for high-resolution. However, there exists a trouble on the analysis of the three dimensional effects. To solve this problem an efficient three dimension numerical modeling algorithm is needed. Numerical radar modeling in three dimensional case requires large memory and long calculating time. In this paper, a finite difference method time domain solution to Maxwell's equations for simulating electromagnetic wave propagation in three dimensional media was developed to make economic algorithm which requires smaller memory and shorter calculating time. And in using boundary condition Liao absorption boundary. The numerical result of cross-hole radar survey for tunnel is compared with real data. The two results are well matched. To prove application to three dimensional analysis, the results with variation of tunnel's incident angle to survey cross-section and the result when the tunnel is parallel to the cross-section were examined. This algorithm is useful in various geo-radar survey and can give basic data to develop dat processing and inversion program.



  1. 지표투과 레이다의 송신파형 및 모형반응 계산에 관한 연구 설순지
  2. 지반환경물리탐사 손호웅;김지수;송영수;윤왕중;김인수;서만철;김기영;조인기
  3. 주파수 의존성을 고려한 지표투과 레이다 모형반응 이영균
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