高陡起伏地形GPR偏移的波场延拓及精度分析
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Release time:2020-08-08 DOI number:10.11817/j.issn.1672-7207.2016.07.036 Affiliation of Author(s):中南大学地球科学与信息物理学院 Teaching and Research Group:中南大学应用地球物理系 Journal:中南大学学报(自然科学版) Place of Publication:中国 Key Words:探地雷达；偏移成像；高陡起伏地形；交叉微分算子；波场延拓 Abstract:基于高陡起伏地形对探地雷达波场的成像精度产生影响,将传统的单微分算子改进为交叉微分算子(CDO);基于交叉微分算子的差分逆时偏移改变传统差分偏移算法的波场延拓方向,给出无近似的波场延拓差分公式、上行波边界条件和实现过程,得到能适应于高陡起伏地形的探地雷达偏移算法,然后以横向速度差异较大的高陡起伏反射模型为例,从波场延拓精度与解析结果、振幅保真加权值、高陡界面能量归位能力、成像剖面4方面分析交叉微分算子偏移法与传统方法的成像精度。研究结果表明:基于交叉微分算子的探地雷达偏移算法能够实现高陡界面的正确归位。 Co-author:戴前伟, 冯德山, 张彬 First Author:石明 Indexed by:Applied Research Correspondence Author:尹小波 Document Code:DOI:10.11817/j.issn.1672-7207.2016.07.036 Discipline:地质资源与地质工程 Document Type:J Volume:47 Issue:7 Page Number:2448-2455 ISSN No.:1672-7207 Translation or Not:no Date of Publication:2016-07-27 Included Journals:EI -
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