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．
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.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第2期257-263,共7页
Chinese Journal of Geophysics
基金
国家自然科学基金!49604054
