基于速度估计的改进型线性变换有限差分偏移在探地雷达中的应用
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Release time:2020-08-09 Impact Factor:0.829 DOI number:10.3969/j.issn.0001-5733.2011.05.023 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:地球物理学报 Place of Publication:中国 Funded by:40804027；41074085；200805331082；09113084 Key Words:探地雷达；线件变换；有限差分；横向非均匀介质；速度估计 Abstract:为了解决传统线性变换有限差分 偏移算法对变速介质的高敏感性问题,对加入了速度变量的标量波动方程进行线性变换,在横向非均匀介质条件下,详细推导了包含混合因子项的线性变换差分偏移 方程,实现了横向非均匀介质中陡倾角反射界面的正确归位,同时改进型算法可以灵活地选择混合因子项,这样就增强了原算法对复杂地质问题的适应能力,在此基 础上结合速度估计算法,减小多次尝试输入法所产生的误差,提出一种基于速度估计的改进型线性变换有限差分偏移算法,并用该算法对实测探地雷达剖面进行了偏 移处理,通过对比偏移前后的雷达资料得知,当横向非均匀介质中同时存在多次反射质点和主体反射层时,改进的偏移算法能有效地提高雷达剖面的偏移精度. Co-author:陈德鹏, 戴前伟, 张彬 First Author:冯德山 Indexed by:Applied Research Document Code:DOI：10.3969/j.issn.0001-5733.2011.05.023 Discipline:地质资源与地质工程 Document Type:J Volume:54 Issue:5 Page Number:1340-1347 ISSN No.:0001-5733 Translation or Not:no Date of Publication:2011-05-15 Included Journals:SCI -
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