| 衰减雷达波有限元偏移 |
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| 引用本文： | 底青云,许琨,王妙月.衰减雷达波有限元偏移[J].地球物理学报,2000,43(2):257-263. |
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| 作者姓名： | 底青云 许琨 王妙月 |
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| 作者单位： | 中国科学院地质与地球物理研究所,北京100101 |
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| 基金项目： | 国家自然科学基金!49604054 |
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| 摘 要： | 高频雷达波在地球介质中有较强的衰减，反演中不可忽略．为此文中首先给出了含衰减项的雷达波的有限元方程及其偏移理论．用有限差分法或有限元法可正演合成雷达波资料，加入一定的扰动后用含衰减项的雷达波有限元方程做偏移，实例结果表明，考虑衰减项的偏移结果能使界面更好地归位，这为提高探地雷达地质解释的分辨率提供了可能性，为逐渐地实现符合雷达波自身动力学特点的处理系统奠定了基础．
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| 关 键 词： | 衰减 雷达波 偏移 有限元方法 |
| 收稿时间： | 1998-11-24 |
THE ATTENUATED RADAR WAVE MIGRATION WITH FINITE ELEMENT METHOD |
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| DI QING-YUN,XU KUN,WANG MIAO-YUE.THE ATTENUATED RADAR WAVE MIGRATION WITH FINITE ELEMENT METHOD[J].Chinese Journal of Geophysics,2000,43(2):257-263. |
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| Authors: | DI QING-YUN XU KUN WANG MIAO-YUE |
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| Institution: | Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing 100101, China |
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| Abstract: | Since high-frequency radar waves are strongly attenuated in earth media, its attenuation function must be considered in inversion. The finite element equations for attenuated radar waves and attenuated radar wave migration method are derived in this paper. Synthesizing the forward radar wave records by FDM or FEM, and adding a random disturbance, we do the migration of attenuated radar wave by finite element method. The modeling results show that the migration results are much improved after considering attenuation. It provides a possibility to improve the resolution of geological interpretation as long as the attenuation of radar wave is considered in data processing. Consequently it lays a basis to form a radar data processing system in which the dynamic character istics of radar wave is considered. |
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| Keywords: | Attenuation Radar wave Migration Finite element |
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