探地雷达的正演模拟及有限差分波动方程偏移处理
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Release time:2020-08-09 DOI number:10.3969/j.issn.1672-7207.2006.02.029 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 Funded by:50099620 Key Words:探地雷达; 正演模拟; 有限差分法; 波动方程; 偏移 Abstract:利用麦克斯韦方程和有限差分法,推导出雷达波的二维有限差分正演方程组,并运用该正演方程对"V"字形地电模型和同一斜面上的5个圆的地电模型进行正演合成,得到其相应的正演合成剖面;把该正演合成的剖面与实际模型相比,得出正演合成图与实际模型的示意图在形状上有一定的差别,这是剖面中异常点处的绕射波所致;为了提高雷达资料的解释精度,对正演合成的雷达剖面进行后处理,运用雷达上行波反向外推有限差分偏移法,对2个正演合成的雷达剖面进行偏移处理,通过对比偏移处理前后的雷达正演剖面,采用有限差分偏移法能使雷达正演剖面中的反射波归位,绕射波收敛,从而大大提高了雷达正演剖面的分辨率,有利于探地雷达剖面的地质解释和验证偏移方法的有效性. Co-author:何继善, 戴前伟 First Author:冯德山 Indexed by:Applied Research Document Code:1672-7207(2006)02-0361-05 Discipline:地质资源与地质工程 Document Type:J Volume:37 Issue:2 Page Number:361~365 ISSN No.:1672-7207 Translation or Not:no CN No.:43-1426/N Date of Publication:2006-04-26 Included Journals:EI -
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