论文部分内容阅读
为滤掉由震源和传播路径引起的面波,应用假定是相同的震源和接收器组合。组合图形的响应曲线说明组合对于增强反射和折射信号(长的波长)和衰减相干噪声(短的波长)在理论上有最佳效应。普遍认为:原始记录应该提供最大的信噪比以便以后进一步改进信号,我们提出的方法是使用数百道和应用专门设计的(f·k)滤波器,使空间滤波在野外保持最小值。
To filter out surface waves caused by sources and propagation paths, a hypothetical same source and receiver combination is applied. The response of the combined graph shows that the combination theoretically has the best effect for enhancing the reflection and refraction signals (long wavelength) and attenuating coherent noise (short wavelength). It is generally agreed that the original record should provide the greatest signal-to-noise ratio for further improvement of the signal, and our approach is to use hundreds of filters and specially designed (f · k) filters to keep spatial filtering to a minimum in the field.