摘要
传统的τ p变换算法易出现假频和端点效应。基于前人的思想,笔者对时空域中传统的τ p变换算法进行了改进,有效地解决了上述问题。理论模型试算证实了本算法的正确性和有效性,实例分析结果表明,用改进后的τ p变换算法进行波场分离提取瞬态瑞雷波频散曲线具有失真小、可靠性高、压制假频和端点效应好等优点。
Traditional transform algorithm has been improved in this paper. The new efficient algorithm has overcome the troubles of false frequency and port effect existing in traditional transform algorithm. The test of theoretical models and the field seismic data indicate that the improved transform algorithm has the merits of good stability, high reliability and weak distortion, and can efficiently eliminate false frequency and port effect.
出处
《物探与化探》
CAS
CSCD
2003年第4期292-295,共4页
Geophysical and Geochemical Exploration
基金
九.五"国家重点科技攻关项目(96-221-01-02-05)
长江水利委员会综合勘测局科技发展基金资助项目(KY2000-4)
关键词
瞬态瑞雷波勘探
波频散曲线
Τ-P变换
假频
端点效应
双曲线速度滤波
transient Rayleigh wave
dispersion curve
τ-p transform
false frequency and port effect
hyperbola velocity filter
