| High Precision Time Domain Forward Modeling for Crosshole Electromagnetic Tomography |
| |
| 作者姓名： | 林树海 赵立英 |
| |
| 作者单位： | Key Laboratory of Geo-detection (China University of Geosciences Beijing) Ministry of Education，State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences，Beijing 100083，China，School of Geophysics and Information Technology，China University of Geosciences，Beijing 100083，China，Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China，School of Applied Science，University of Science and Technology Beijing，Beijing 100083，China，Beijing 100083，China |
| |
| 基金项目： | This paper is supported by the Focused Subject Program of Beijing (No. XK104910598)，Foundation for Returned Students of Ministry of Education, and Foundation of China University of Geosciences (Beijing). |
| |
| 摘 要： | To improve the resolution of crosshole electromagnetic tomography, high precision of forward modeling is necessary. A pseudo-spectral time domain (PSTD) forward modeling was used to simulate electromagnetic wave propagation between two boreholes. The PSTD algorithm is based on the finite difference time domain (FDTD) method and uses the fast Fourier transform (FFT) algorithm for spatial derivatives in Maxwell's equations. Besides having the strongpoint of the FDTD method, the calculation precision of the PSTD algorithm is higher than that of the FDTD method under the same calculation condition. The forward modeling using the PSTD method will play an important role in enhancing the resolution of crosshole electromagnetic tomography.
|
| 关 键 词： | 磁共振成像 有限时间差 光谱 模型正演 |
| 收稿时间： | 2007-06-20 |
| 修稿时间： | 2007-09-22 |
High Precision Time Domain Forward Modeling for Crosshole Electromagnetic Tomography |
| |
| Lin Shuhai,Zhao Liying.High Precision Time Domain Forward Modeling for Crosshole Electromagnetic Tomography[J].Journal of China University of Geosciences,2007,18(4):320-325. |
| |
| Authors: | Lin Shuhai Zhao Liying |
| |
| Institution: | 1. Key Laboratory of Geo-detection (China University of Geosciences, Beijing), Ministry of Education,Beijing 100083, China; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China; School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China; Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing 100029, China
2. School of Applied Science, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | To improve the resolution of crosshole electromagnetic tomography, high precision of forward modeling is necessary. A pseudo-spectral time domain (PSTD) forward modeling was used to simulate electromagnetic wave propagation between two boreholes. The PSTD algorithm is based on the finite difference time domain (FDTD) method and uses the fast Fourier transform (FFT) algorithm for spatial derivatives in Maxwell's equations. Besides having the strongpoint of the FDTD method, the calculation precision of the PSTD algorithm is higher than that of the FDTD method under the same calculation condition. The forward modeling using the PSTD method will play an important role in enhancing the resolution of crosshole electromagnetic tomography. |
| |
| Keywords: | finite difference time domain method pseudo-spectral time domain algorithm forward modeling tomography |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
