中文摘要：

开发新信号处理技术是合乎需要的因为有效地在地上凿穿的强壮的干扰下面提取反映的波浪指导了波浪。我们为分离和反映的波浪的速度(缓慢) 分析介绍了一个多尺度的外表方法并且在地上凿穿指导了波浪声学的记载。它特殊为声学的思考调查与极端长的来源接收装置间距为最新发达的工具被设计。这个新方法是双树建筑群小浪变换(DT 享特威) 和缓慢旅行时间连贯(STC ) 的联合方法。应用程序到 3D 当模特儿的有限差别(FD ) 模仿了数据，到域数组，声音的波形信号表明了这个方法的能力适当地在从指导波浪的严重干扰下面提取反映的波浪并且在时间频率域压制噪音。

英文摘要：

It is desirable to develop new signal processing techniques for effectively extracting reflected waves under the strong interferences of borehole guided waves. We presented a multi-scale semblance method for the separation and velocity （slowness） analysis of the reflected waves and guided waves in borehole acoustic logging. It was specially designed for the newly developed tools with ultra-long source- receiver spacing for acoustic reflection survey. This new method was a combination of the dual tree com- plex wavelets transform （DT-CWT） and the slowness travel time coherence （STC） method. Applications to the 3D finite difference （FD） modeling simulated data and to the field array sonic waveform signals have demonstrated the ability of this method to appropriately extract the reflected waves under severe interference from the guided waves and to suppress noise in the time-frequency domain.