| S变换和TT变换联合压制地震面波 |
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| 引用本文： | 马见青,李庆春.S变换和TT变换联合压制地震面波[J].物探化探计算技术,2011,33(3):252-257. |
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| 作者姓名： | 马见青 李庆春 |
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| 作者单位： | 长安大学,地质工程与测绘学院,陕西,西安,710054 |
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| 基金项目： | "863"国家高技术研究A类课题，交通部西部交通建设项目，长安大学科技创新计划项目 |
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| 摘 要： | TT变换(Time-Time transform)是基于S变换的一种新的非平稳信号处理方法,具有很好的频率聚集能力.面波的频率比反射波的频率低,通过提取TT变换域的对角线元素,就可以压制低频面波.但该方法的不足是在压制低频的同时,也保留了部份高频干扰,这些高频干扰可以用S变换来消除.首先对每一道地震数据进行S变换时频滤...
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| 关 键 词： | 面波压制 时频分析 S变换 TT变换 |
Joint S transformation and TY-transformation method of surface wave suppression |
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| MA Jian-qing,LI Qing-chun.Joint S transformation and TY-transformation method of surface wave suppression[J].Computing Techniques For Geophysical and Geochemical Exploration,2011,33(3):252-257. |
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| Authors: | MA Jian-qing LI Qing-chun |
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| Institution: | MA Jian-qing,LI Qing-chun(School of Geological Engineering and Surveying,Chang'an University,Xi'an 710054,China) |
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| Abstract: | TT transformation (Time-Time transformation) is a new method to process non-stationary signal based on S-transform,it has a good ability of frequency conversion.The surface wave,with lower frequency compared with other seismic wave,can be suppressed through extracting the TT spectrum's diagonal elements of seismic data.However,this method has a deficiency that in pressing low-frequency signal,a part of high-frequency interference is retained that can be eliminated by S transformation.Firstly,we apply S tran... |
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| Keywords: | surface wave suppression time-frequency analysis S-transformation TT-transformation |
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