吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (2): 474-482.doi: 10.13278/j.cnki.jjuese.20170281
刘新彤1, 刘四新1, 孟旭2, 傅磊1
Liu Xintong1, Liu Sixin1, Meng Xu2, Fu Lei1
摘要: 全波形反演方法作为一种高分辨率成像手段在跨孔雷达反演中得到有效应用,但其仍受局部最小问题影响。一个有效的解决方法是为反演提供一个准确的初始模型。但在应用真实雷达数据时,由于地下介质未知且存在低频数据缺失的情况,全波形反演往往难以获得理想结果。为此,使用对包络目标函数求导的方法,详细推导了包络波形反演的梯度公式。该方法与传统全波形反演方法在原始数据低频成分缺失情况下的反演结果对比表明,该方法能够有效还原缺失的低频信息并且对低频缺失数据有更好的反演能力,可以直接为地下介质提供定量解释。
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